Gateway 850 User Manual

your Gateway 850

SCSI storage enclosure

user'sguide

Installing

Configuring

Contents

1 About the Gateway 850 SCSI Storage Enclosure . . . . . . . . . . . . . . . . 1

Welcome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Back . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Front bezel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Converting to a dual-backplane device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

AC power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Cooling fan module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

SAF-TE Disk I/O card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

RS-232 ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Control and monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Status indicator LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Drive LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Audible alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2 Setup and Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Enclosure detailed installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Installing the storage enclosure in a rack cabinet . . . . . . . . . . . . . . . . . . . . . . 15

Enclosure configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Host cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Turning on the enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Turning off the enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3 Monitoring Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Enclosure component monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Status indicator LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Drive LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Audible alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

One-touch annunciation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Enclosure monitoring using VT-100 emulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Uploading SAF-TE controller card firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

4 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

General enclosure problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Common SCSI bus problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

i

Terminal emulator and COM port problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

Host SCSI channel problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

Device SCSI channel problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

Problems during bootup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

Common problems and interpreting the LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

Warning and error events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

Disk errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

Disk channel errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

5 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

Removing the front bezel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

Replacing the cooling fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

Replacing a power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

Replacing a drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

Replacing the SAF-TE Disk I/O card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70

A Technical Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73

B Port Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75

Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75

SAF-TE RS-232 serial port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

Null-modem cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

C Safety, Regulatory, and Legal Information. . . . . . . . . . . . . . . . . . . . . . .77

Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

ii

About the

Gateway 850

SCSI Storage

Enclosure

Read this chapter to le arn about:

■ Enclosure features

■ Components and connections

■ Control and monitoring functions

1

1

Chapter 1: About the Gatew ay 850 SCSI Storage E nclosure

Welcome

Congratulations on the purchase of your new Gateway 850 SCSI Storage
Enclosure. The enclosure is the new generation of fully fault-tolerant Ultra320
SCSI storage solutions available in a unique 2U design that fits in a compact
space, ideally suited for today’s data centers. The enclosure supports as many
as twelve 1-inch high Ultra320 dri ves.

2

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Features

The enclosure is designed for mission-critical applications requiring the highest
performance with uncompromised data reliability, such as mid-range and
enterprise server storage. It maintains exceptionally high throughput and is
ideally suited for high bandwidth data-intensive applications, such as electronic
commerce, digital video, CAD, seismic research, digital pre-press, and 3-D
imaging.

The following are major features:

■ Ultra320 storage system enclosure.

■ Supports as many as 12 drives

■ Designed to fit EIA 310D standard 19-inch rack enclosures.

■ Sequential data transfers from disk arrays at over 320 M B/sec sustained.

■ Operating system-independent—no special software or drivers required.

■ Ultra320 low-voltage differential single (LVDS) host ports.

■ As many as two 320 MB/sec SCSI disk channels

Features

■ All SCSI channels are backward compatible Ultra2 LVD and

Ultra/Fast/Asynchronous single-ended SCSI modes.

■ All SCSI c hannels su pport SP I-3 Cyclic Redundan cy Check ( CRC) and

Domain Validation.

■ Continuous runtime diagnostics fo r warnings and automatic sh utdown for

out-of-spec temperatures and voltages, battery failures, and internal errors.

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3

Chapter 1: About the Gatew ay 850 SCSI Storage E nclosure

Front

Drive Status LEDs

(left column of LEDs)

(right column of LEDs)

Back

swappable independent

power supplies

Drive Activity LEDs

350-watt hot

Dual in-line

80-CFM hot

swappable

cooling fans

SAFTE Disk I/O Card

SAF-TE Service & VT-100 Ports

Power On LED

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Controller 2

Controller

Controller 1

Cover Plate

4

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Components

Front bezel

The front bezel houses the status LEDs, drive LEDs, and alarm reset butto n.
Remove the bezel to access the drives. You can remove and install the bezel
without interrupting current system activities.

Embedded within the front bezel is the electronic package that provides the
communication with th e microprocessor. The microprocessor communi cates
with SAF-TE processors (SEP) and the drives in the enclosure. It passes
information to the front bezel Channel Mode and drive status LEDs . For more
information on monitoring functions, see “Control and monitoring” on
page 11.

Power is supplied to the front bezel through an edge connector . A control cir cuit
monitors the bezel for a correct co nnection. When the bezel is correctly
installed and the storage enclosure is turned on, the bezel is immediately
powered.

Components

Drive LEDs

Reset Alarm

Status LEDs

Alarm Reset Button

For information about removing the bezel, see “Removing the front bezel” on
page 62.

www.gateway.com

5

Chapter 1: About the Gatew ay 850 SCSI Storage E nclosure

Converting to a dual-backplane device

You can convert the enclosure to a dual-backplane device by removing the
single bus module.

To con vert the enclosure into a dual-backplane device:

1 Turn off the enclosure. For instructions, see “Turning off the enclosure”

on page 29.

2 Remove the controller cover plate .

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Single-Bus
Module

Cover Plate

3 Remove the single bus module from the Controller 1 slot.
4 Reinstall the cover plate.

6

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AC power

The storage enclosure’s power system consists of two 350-watt, hot-swappable
power supplies, each with independent AC power and co oling fans. This p ower
system provides the enclosure with “N+1” redundant power. Each power supply
has auto-switching circuitry for use with either 110V or 220V AC systems.

Blank Plate

To turn on the enclosure, press each of the two power supply On/Off switches
to the “on” position.

Components

A Power LED on each power supply turns on to ind icate that enclosure is turned
on. The front bezel power LED turns green when both power supplies are on
and operating normally . If only one power supply is operational, t he front bezel
power LED turns orange.

The power supplies also have a general Fault LED. If the power supply is
installed and the power supply is not receivin g powe r or if th e power supply
cooling fan fails, the general power supply Fault LED turns orange and an alarm
sounds.

Each power supply has an AC power cord module. The modules have a power
cord clip incorporated into the design to secure the power cord after it has been
correctly inserted. The clip prevents accidental power cord disconnections.

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7

Chapter 1: About the Gatew ay 850 SCSI Storage E nclosure

Cooling fan module

The cooling system consists of two high-performance (80-CFM) cooling fans
mounted in a single fan module which slides into an open bay at the rear of
the enclosure. The design of the fan module provides an easy user-replaceable
component in a live environment without interruption of service.

If any one fan should fail, cooling redundancy and efficie ncy are degraded. If
a fan fails, the SAF-TE processor communicates status of the cooling fans, which
turns on the Fan Status LED and an alarm. The SAF-TE processor will also
provide the notification data to any monitoring software.

The enclosure temperature sensors ar e monitored for out-of-tolerance
conditions of the established temperature threshold value of 60°C (140°F). If
a threshold value is exceeded, the Fa n Status LED will begin flashing orange.

Warning Do not operate the encl osur e for ex tended period s of tim e

(greater than 5 minutes) with the cooling fan module
removed. No enclosure coo li ng is av ai lab le w hi le the fa ns
are removed.

The fan module can be replaced during normal operation without turning off
the enclosure or interrupting normal system operations.

8

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SAF-TE Disk I/O card

Warning The SAF-TE Disk I/O card is not hot swappab le. You must

turn off the enclosure prior to removing or replacing this
card.

The SAF-TE Disk I/O card provides the built-in environmental and system status
monitor ing, as wel l as hos t connec tivity to the drives . It also h ouses th e
switches for setting SCSI IDs, VT-100 communication protocols, and drive
spinup options.

This card contains two SAF-T E processors ( SEPs) tha t continu ously monito r the
enclosure for temperature status, fan status, power supply status, and SCSI
channel status. The SEPs are responsible for reporting environmental conditions
and system status to the front bezel LEDs, audible alarms, external monitoring
software, and third-party monitoring software. Using the SAF-TE specification
protocol version 1.0, the SEPs communicate through the SCSI bus to report on
enclosure status and communicate information about the associated host
system.

At power up, the SAF-TE processors read the SCSI switch settings and configure
the system for the appropriate addresses. They then execute firmware from the
on-board flash memory and perform a self-test. The firmware is flash
upgradeable using the SAF-TE RS-232 Service port located below the I/O card
slots at the rear of the enclosure. The firmware also contains the necessary
functions for enclosure management.

Components

Specific switch settings are discussed later in “Setup and Installation” on
page 13.

2

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9

Chapter 1: About the Gatew ay 850 SCSI Storage E nclosure

The SAF-TE Disk I/O card has two 68-pin VHD/CI SCSI connectors which
provide the connectivity from the host computer(s) to the drives. The
connectors are labeled “Channel 1” and “Channel 2.”

In JBOD single-bus mode, the Channel 1 connector provides SCSI bus access
to all the drive slots, 1 through 12, and the Channel 2 connector provides the
automatic SCSI bus termination.

In JBOD Dual-Bus mode, the Channel 1 connector provides SCSI bus access to
the drives in slots 7 through 12, and the Channel 2 connector provides access
to the drives in slots 1 through 6. Termination is automatic and provided
internally on the drive mid-plane circuit board.

RS-232 ports

The SAF-TE Service RS-232 serial port is located below the I/O card slots, and
between the two Control ports. The SAF-TE Ser vice port provides an RS-232
serial interface to the SAF-TE Disk I/O card allowing firmware uploads and
maintenance/service monitoring of the SEPs.

10

CTRL 1

SAF-TE

CTRL 2

SAF-TE Service Port

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Control and monitorin g

Control and monitoring

The SAF-TE processors provide monitoring information for the enclosure
environmental conditions such as enclosure tem perature, cooling fan status,
power supply status, and SCSI bus status. This information is reported to the
monitoring system to provide the user with LED and audible alarm
notifications. This environmentally monitored information is also
communicated to monitoring software. Refer to “Monitoring Systems” on
page 31 for more complete details.

Drive Status LEDs

(left column of LEDs)

Drive Activity LEDs

(right column of LEDs)

Reset Alarm

Channel Status LED

Alarm Reset Button

Power
Supply
Status LED

Fan Status LED

The enclosure incorporates a “One-Touch Annunciation” which provides an
LED readout of the current switch configuration, host interface type, bus
configuration, communication BAUD setting, drive spin-up settings, and
controller status. For more information, see “One-touch annunciation” on
page 35.

Status indicator LEDs

The Status Indicator LEDs are grouped on the right side of the front bezel
directly above the Alarm Reset button.

Power LED

When the Power LED is green, it indicates that the enclosure is turned on.

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11

Chapter 1: About the Gatew ay 850 SCSI Storage E nclosure

Channel Status LED

The Channel Status LED is green at all times.

Power Supply Status LED

The Power Supply Status LED indicates the condition of the power supplies.
The LED is a steady green when both power supplies are functioning normally
and will change to orange if one power supply fails or is turned off.

A failed power supply can be identified by the orange “Fault” LED located on
the power su pply.

Fan Status LED

The Fan Status LED indicates the condition of th e cooling fans. The LED is green
when both fans are functioning normally. Th e LED is orange if any of the fans
fail.

Drive LEDs

The Drive LEDs are located on the left side of the front bezel between the
ventilation ribs and co mprise the Drive Sta tus LEDs and Drive A ctivity LEDs.
The Drive LEDs are grouped in pairs and are in the general location of the drive
slot. There are 12 Drive Status a nd Drive Activity LEDs , one group or pair for
each drive. For detailed information, see “Drive LEDs” on page 33.

Audible alarm

An audible alarm sounds when an y of the enclosure’s components change to
an abnormal state. To silence the alarm, press the Alarm Reset button located
on the front bezel. The corresponding alarm’s LED will remain il luminated until
the condition returns to a normal state.

12

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Setup and

Installation

Overview

This chapter describes the procedures to install and set up
the enclosure. Each section will step you through the
hardware installation, cabling and topology
configurations, an d upgrades.

It is important to thoroughly review this information and
perform the procedures in the order in which they are
presented. This will ensure a smooth and trouble-free
installation.

2

13

Chapter 2: Setup and In stallation

The installation is divided into three sections:

■ The first section describes installing the enclosure into the rack cabinet.

See “Enclosure detailed installation” on page 15.

■ The second section describes setting the SAF-TE Disk I/O card switches and

the enclosure-to-enclosure cabling. The SAF-TE card switch settings
determine the SCSI IDs, RAID Addressing, and disk spin -up options. See
“Enclosure configuration” o n page 21.

■ The third section describes the cabling of the enclosure to the host

system(s). This enclosure is very flexible and there are several possible
configurations. See “Host cabling” on page 28.

14

www.gateway.com

Enclosure detailed i nstallation

Enclosure detailed installation

This first section describes preparing and installing the enclosure into the rack
cabinet.

After installing the hardware components, go to “Enclosure configuration” on
page 21 and set the SAF-TE Disk I/ O card switches and encl osure cabling for
your drive configuration.

Installing the storage enclosure in a rack cabinet

To install the storage enclosure in a rack c abinet:

1 Select an appropriate location within your rack cabinet. If you are installing

more than one enclosure, you should consider the location of the
enclosures in relationship to each other
easily reach between enclosures.

to make sure that the c ables will

Warning The power supplies and drives should be removed prior

to installing the enclosure into the rack cabinet. The
enclosure chassis could be damaged during installation
due to the added weight of the power supplies and drives.

Make sure that the selected location in the rack cabinet has ad equate air
flow for the front-to-side and side-to-side areas.

2 Remove the enclosure from its shipping carton and inspect for obvious

damage. Place the enclosure on a flat surface.

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15

Chapter 2: Setup and In stallation

3 Rotate the front bezel thumbscrews counter-clockwise one-quarter turn to

unlock the bezel.

4 Using both hands, grasp and pull the front bezel away from the enclosure.

Store the bezel in a location so that it will not be damaged.

R

eset Alarm

16

R

e

s

e

t A

la

rm

5 Remove each of the power supplies by grasping each handle and pressing

in on the release latch with your thumb as you pull the power supply away
from the enclosure.

6 Remove each of the drives.

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Enclosure detailed i nstallation

7 Locate the mounting hardware in the accessory kit (mounting rails, screws,

and nuts. On some rack installations you will use cage nuts and on some
racks they will be standard nuts).

It will be helpful to have an assistant available during the installation.

8 Lift and secure the enclosure into the rack cabinet.

a Position the enclosure in the cabinet at the desired location.
b Secure the left and right front chassis flanges to the rack cabinet’ s front

vertical posts using the supplied screws and nuts. Make sure that both
sides of the enclosure are even.

Front Rack Vertical

Post

Mounting

Screw

Mounting

Screw

Nut

Nut

Chassis Flange

c Install the rear mounting rails using the supplied screws and nuts.

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17

Chapter 2: Setup and In stallation

From the rear of the rack cabinet, slide one of the mounting rails into
the slot provided on the left side of the enclosure.

Push the rail into the slot until it fits the depth of the rack cabinet.
It shoul d mate w ith the re ar rack c abinet ve rtical p ost.

Make sure that the enclosure is level. Do this by verifying that the
same height mounting location slots on both the front and rear rack
cabinet vertical post are being used.

d Secure the left side rail to the vertical post using the screws and nuts.
e Repeat the substeps 8(c) and 8(d) for the right side rail.

Rail Slot

Rear Rack Vertical Post

J

P

I
N
A

T
I
O
N

E

8

T
E

R

T

M

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A
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JP

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CHANNEL -1

T
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P
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T

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O

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S

A

O

U

D

W

P

D

P

J

L

U

Y

CHANNEL -2

M
P
E

R

Controller 1

Controller 2

TERM POWER

TO

SUPPLY

ADD JUMPER

JP1

JP3

TERM POWER

TO

SUPPL

ADD JUMPER

JP1

TERMINA

Y

JP

TO

2

JP3

DISABLE

ADD JUMPER

TION

JP4

TERMINA

JP2

TO

DISABLE

ADD JUMPER

TION

JP4

C

N

C

F

N

G

F

1

S

G

R

P

2

A

A

S

B

R

ID

P

A

E

A

U

D

1

R

D

LY S

E

RM

S

2

E

T

T

L

S

R

T

T

R

T

A

18

Nut

Mounting

Nut

Screws

Rail Slot

9 Re-install the power supplies. Do this by aligning the power supply with

its open bay and sliding the power supply in.
Make sure that the power supply completely seats in the enclosure. The

power supply will fit flush and the latch will reset as the power supply
reaches its fully seated position.

www.gateway.com

Enclosure detailed i nstallation

10 Install the drives.

a Remove each drive from its shipping container and inspect each drive

for obvious damage.

b From the front of the storage enclosure, install each drive into its drive

slot.
Align the carrier rails with the rail grooves in the drive bay. The drive

carrier tension clips ensure that the drive fits very tight, so it requires
some force to push the drive into its bay. Make sure that the drive
seats completely. Repeat this step to populate all the drive slots.

c Reinstall the front bezel. Make sure that the bezel mounts to the two

stud posts and the bezel lip fits under the chassis top.
Secure the front bezel by rotating the thumbscrews clockwise

one-quarter turn.

11 Install the power cords and secure them using the power cord clips.

Warning Make sure that the power supply On/Off switches are in

their Off position.

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19

Chapter 2: Setup and In stallation

a Make sure that the orientation is such that when the power cord is

inserted, the clip will be at the top of the cord and will fit over and
onto the cord.

b Connect the other ends of the power cords into three-hole grounded

outlets or a UPS power system.

Clip fits over
and onto the
power cord.

c Repeat steps 10(a) and 10(b) for the other power cord.

12 Repeat the above steps for each additional enclosure you are installing.

Before you continue...

The next section includes steps and diagrams for setting the SAF-TE Disk I/O
card switches and attach ing the required SCSI data cabl es for each drive
configuration. Lo cate the applicable co nfiguration and re fer to the steps and
diagrams to set the card switches and cable your system.

The last section of this chapter provides the steps to correctly turn on or off
your enclosure.

20

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Enclosure configurat ion

Enclosure configuration

In this section, configurations are determined by the SCSI bus configuration.
Your enclosure ships with the single-bus module installed. Follow these
procedures to set the switches and jumpers, and connect the SCSI data cables.

JBOD - 12 drive configuration

The enclosure can be set up as a single-bus (default) or a dual-bus JBOD (Just
a Bunch of Drives) configuration using a single enclosure which provides up
to a 12-drive storage solution.

Single-bus mode

Single Bus

Module

T= Location of internal termination

(autosense allows the physical connection

to disable termination)

Drives 7 - 12

Drives 1 - 6

SAF-TE Disk I/O

SEP

SEP

Drive I/O Connectors

T

CH 1 CH 2

T

In single-bus mode (default), Channel 1 on the SAF-TE Disk I/O card assesses
all the drives (1 through 12). The installed single-bus module connects Channel
1 and Channel 2 together to create a single continuo us SCSI bus.

Dual-bus mode

SAF-TE Disk I/O

T

T

T= Location of internal termination

(autosense allows the physical connection

to disable termination)

Drives 7 - 12

Drives 1 - 6

SEP

SEP

Drive I/O Connectors

T

CH 1 CH 2

T

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21

Chapter 2: Setup and In stallation

In dual-bus mode, the Channel 1 connecto r on the SAF-TE Disk I/O ca rd
provides access to drives 7 thro ugh 12 and the Channel 2 connector provides
access to drives 1 through 6.

For dual-bus mode, you must remove the s ingle-bus module from the enclosure.
For instructions, see “Converting to a dual-backplane device” on page 6.

In the preceding logical view diagrams, the drive slots are used to indicate which
drives are connected to which channel. They should not be confused with the
drive SCSI IDs. Those IDs are pre-determined by the SCSI Disk I/O card switch
settings.

To set the bus mode on the SAF-TE Disk I/O card:

1 Remove the SAF-TE Disk I/O card installed in the enclosure. Loosen the

two thumb screws and pull the card from its slot location.

2 Locate the switches on the card and set them as described in the following

switch setting diagrams. Some configurations have multiple switch setting
options available. Choose the setting that is a ppropriate for your system.

SAF-TE Disk I/O card switch and jumper locations

Termination Jumper

22

Channel 1

Channel 1

Channel 2

t

rt

a

t

r

e1

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p

S

2

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r

UD Rate

a

A

B

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St

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UP (Off -1)

DOWN (On -0)

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ID

nf

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Conf

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FG 1

SPA

RAID

SPAR

BAUD SEL

CHANNEL -1

JP8

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IN

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A

A

IS

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IS

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B

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L

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M

P

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R

CHANNEL -2

RE 1

DLY STRT

E 2

RM

T ST

RT

Channel 2
Termination Jumper

S

S

RDA

A

S1BDDLR

0

0

1

1234 5678

www.gateway.com

Enclosure configurat ion

There is one switch setting for single-bus mode and two possible settings
for dual-bus mode. Refer to the switch setting appropriate for your
configuration and set t he switches accordingly.

SAF-TE ID = 15
Host ID (0 or 7)

Single-Bus Mode

Switch Settings

S

RDA

A

S1BDDLR

0

0

1

1234 5678

M

UP (1)

DOWN (0)

SAF-TE ID = 15/15
Host HBA (ID 0 or 7)

Switch Settings

S

RDA

A

S1BDDLR

0

0

1

1234 5678

M

UP (1)

DOWN (0)

SAF-TE ID = 15/15
Host HBA (ID 0 or 7)

Switch Settings

S

S1BDDLR

RDA

A

0

0

1

1234 5678

M

UP (1)

DOWN (0)

Slot 1

Slot 2

Slot 3 Slot 6 Slot 9 Slot 12

Slot 4

ID 1

Slot 5

ID 3

ID 5

Drive IDs of the Drive Slots (Drive Channel Side)

ID 2

ID 4

ID 6

Slot 7

Slot 8

ID 9

ID 11

ID 13

Slot 10

Slot 11

Dual-Bus Mode

Slot 1

Slot 2

Slot 3 Slot 6 Slot 9 Slot 12

Slot 4

ID 1

Slot 5

ID 3

ID 5

Drive IDs of the Drive Slots (Drive Channel Side)

ID 2

ID 4

ID 6

Slot 7

Slot 8

ID 1

ID 3

ID 5

Slot 10

Slot 11

Dual-Bus Mode

Slot 1

ID 9

Slot 2

ID 11

Slot 3 Slot 6 Slot 9 Slot 12

ID 13

Slot 4

ID 10

Slot 5

ID 12

ID 14

Drive IDs of the Drive Slots (Drive Channel Side)

Slot 7

Slot 8

ID 9

ID 11

ID 13

Slot 10

Slot 11

ID 10

ID 12

ID 14

ID 2

ID 4

ID 6

ID 10

ID 12

ID 14

3 Re-install the SAF-TE Disk I/O card. Slide the card into the slot and make

sure that it seats completely. Secure the card by tighten the two thumb
screws.

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23

Chapter 2: Setup and In stallation

4 Connect the SCSI data cable(s) from the host system HBAs to the SAF-TE

Disk I/O card Channel connector(s). Use the diagrams for cabling details
for each mode.

Power

Supply

Power

Supply

Host Computer

Cooling

Fans

Single-Bus Mode

Host Computer

SAFTE Disk I/O

Chl 1

Ctlr 1 Ctlr 2SAF-TE

SCSI Data Cable

Chl 2

Single Bus

Module

Power
Supply

Power
Supply

Cooling

Fans

SAFTE Disk I/O

Chl 1

Ctlr 1 Ctlr 2SAF-TE

SCSI Data Cable

Chl 2

SCSI Data Cable

Dual-Bus Mode

This completes the 12-drive configuration setup. Follow your operating system
requirements for preparing new drives, then see “Turning on the enclosure”
on page 29.

24

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Enclosure configurat ion

JBOD - 24 drive configuration

The enclosure can also be set up as a single-bus JBOD (Just a Bunch of Drives)
configuration with two enclosures which will provide up to a 24 drive (12 per
channel) storage solution. In this configuration you can have a single host
system with a single HBA that has dual independent ports or a single host
system with two single port HBAs.

In this configuration both enclosures will be in single-bus mode. In each
enclosure, Channel 1 on the SAF-TE Disk I/O card will access all of the drives
1 through 12. A single-bus module must be installed in the Controller 1 slot.
This single-bus module connects Channel 1 and Channel 2 together to create
a single continuous SCSI bus.

Single-bus mode

Single Bus

Module

Drives 7 - 12

Drives 1 - 6

SAF-TE Disk I/O

SEP

SEP

T

CH 1 CH 2

T

T= Location of internal termination

(autosense allows the physical connection

to disable termination)

Drive I/O Connectors

In the preceding logical diagram, the drive slots are used to indicate which
drives are connected to which channel. They should not be confused with the
drive SCSI IDs. Those IDs are pre-determined by the SCSI Disk I/O card switch
settings.

1 Remove the SAF-TE Disk I/O card installed in both enclosures. Loosen the

two thumbscrews and pull the card from its slot location.

2 Locate the switches on each card and set them as described in the switch

setting diagram.

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25

Chapter 2: Setup and In stallation

SAF-TE Disk I/O card switch and jumper locations

Channel 1

Termination Jumper

CHANNEL -1

JP8

T
E

R
M

O

IN

D

A

IS

T
IO

A
B

N

LE

M
P
E

R

JP

7

Channel 1

Channel 2

There is one switch setting for both enclosures.

Single-bus JBOD switch setting

SAF-TE ID = 15
Host ID (0 or 7)

t

rt

2

e

r

a

p

A

B

ay Dr

UD Rate Selec

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ive

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Re

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Star

Drive Sta

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ot

UP (Off -1)

DOWN (On -0)

2

n

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on 1

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t

ti

a

ra

gu

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i

i

r

ID

nf

a

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CN

CNFG 2

FG 1

SPA

RAID

SPARE 2

BAUD SEL

RE 1

D

LY

RMT STRT

STRT

T

A
D

D

JU

TE

R

T

M

O

IN

D

A

A

IS

D

T

IO

D

AB

J

N

L

U

E

M

P

E

R

CHANNEL -2

Channel 2
Termination Jumper

S

S

RDA

A

S1BDDLR

0

0

1

1234 5678

Single-Bus Mode

26

Switch Settings

S

RDA

A

S1BDDLR

0

0

1

1234 5678

M

Slot 1

Slot 2

Slot 3 Slot 6 Slot 9 Slot 12

UP (1)

DOWN (0)

ID 1

ID 3

ID 5

Slot 4

Slot 5

ID 4

ID 6

ID 2

Slot 7

Slot 8

ID 9

ID 11

ID 13

Slot 10

Slot 11

Drive IDs of the Drive Slots (Drive Channel Side)

ID 10

ID 12

ID 14

3 Re-install the SAF-TE Disk I/O card in each enclosure. Slide the card into

the slot and make sure that it seats completely. Secure the card by tighten
the two thumb screws.

www.gateway.com

Enclosure configurat ion

4 Connect a SCSI data cable from the host system HBA(s) to the SAF-TE Disk

I/O card Channel 1 connectors on each enclosure.

Host Computer

SCSI Data Cable

SAFTE Disk I/O

Chl 1

Power
Supply

Power
Supply

Power

Supply

Power

Supply

Cooling

Fans

Cooling

Fans

Ctlr 1 Ctlr 2SAF-TE

Single-Bus Mode

SAFTE Disk I/O

Ctlr 1 Ctlr 2SAF-TE

Chl 2

Single Bus

Module

SCSI Data Cable

Chl 1

Chl 2

Single Bus

Module

Single-Bus Mode

This completes the 24 drive configuration setup. Follow your operating system
requirements for preparing new drives.

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27

Chapter 2: Setup and In stallation

Host cabling

This section provides instructions for the physical cabling between the primary
enclosure and your host system(s).
number of RAID controllers installed in your host system and the operating
modes of those controllers.

Basic connection instructions

To connect your enclos ure:

1 Install your host bus adapter(s) into the host system(s).
2 For multiple LUN support, make sure that your host operating system is

correctly configured to support this feature. Refer to your host operating
system user’s guide for information on how to perform this procedure.

3 Connect the SCSI data cables. Refer to the topology described for your

solution on the following pages, and cable your system based on the
diagrams shown.

a Connect the required SCSI data cable(s) to the host system’ s SCSI host

bus adapter port connector(s).

The topologies are determined by the

28

b Connect the other end of those SCSI data cable(s) to the storage

enclosure Host Channel ports on the Host I/O card(s) as indicated .

4 Continue now with “Turning on the enclosure” on page 29.
5 After turning on all the system(s), you may need to set the operating mode.
6 Configure the disk arrays as desired.

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Turning on the enclosure

T urning on the enclosure

After you have the system set up and installed, you are ready to turn o n the
enclosure.

Make sure that none of the data cables or power cables are obstructing the air
flow exiting the cooling fan module.

To turn on the drive enclosure:

1 Locate the power supply On/Off switches at the rear of the enclosure.
2 Press each power supply power switch to its “On” position. Each enclosure

performs a power on self test (POST) during its initial start.

3 Turn on the host computers connected to the enclosure.

T urning off the enclosure

If you are planning to completely shut down the entire system, turn off the
host system first.

To turn off the drive enclosure:

1 Turn off the host system.
2 Press each enclosure’s power supply On/Off switches to their “Off”

position.

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29

Chapter 2: Setup and In stallation

30

www.gateway.com

Monitoring

Systems

This chapter contain s information about the on -board
monitoring systems found in the enclosure. It also contains
information on managing the enclosure’s SAF-TE firmware.

You should monitor your enclosure regularly to make sure
that the drives, controllers, arrays, and enclosure
components are working correctly. The front bezel LEDs
and the “One-Touch Annunciation” feature provide the
following monitoring information:

■ Enclosure component monitoring

■ Power monitoring

■ Drive monitorin g

3

31

Chapter 3: Monitoring Systems

Enclosure component monitoring

This section covers notifications provided by the front bezel LEDs and a detailed
explanation of the “One -Touch Annunciation” monitoring system.

As part of the monitoring notifications, an audi ble alarm works in conjuncti on
with the enclosure’ s LEDs, and will sound an alert for any fa ult that occurs with
an enclosure component or drive. To silence the alarm, simply press the Alarm
Reset button.

Status indicator LEDs

The Status Indicator LEDs located above the Alarm Reset button, comprise the
Power-On LED, Channel Status LED, Power Supply Status LED, and Fan Status
LED. The following are descriptions of each of the LEDs.

Power LED

When the Power LED is green, it indicates that the enclosure is turned on.

Channel Status LED

The Channel Status LED is green at all times.

Power Supply Status

The Power Supply Status LED indicates the condition of the power supplies.
The LED is a steady green when both power supplies are functioning normally
and will change to orange if one of the power supplies should fail or be turned
off.

A failed power supply can be identified by the orange “Fault” LED located on
the power su pply.

Fan Status

The Fan Status LED indicates the condition o f the cooling fans. The LED is green
when both fans are functioning normally. Th e LED is orange if any of the fans
fail.

32

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Enclosure componen t monitoring

Drive LEDs

The Drive LEDs are comprised of Drive Status and Drive Activity LEDs and are
located on the left side of the front bezel between the ventilation ribs. The Drive
LEDs are grouped in pairs and are in the general location of the drive slot.

These Drive LEDs assist with identifying which drive is experiencing I/O
activity, array status, and the presence of a drive in a drive slot.

The Drive Status LEDs comprise the “One-Touch Annunciation” monitoring
system which can display the status of controllers and SAF-TE card switch
settings from the touch of the Alarm Reset button. For more information, see
“One-touch annunciation” on page 35.

Drive LEDs

Drive Slot 1 Drive Slot 4 Drive Slot 7 Drive Slot 10

Drive Slot 2 Drive Slot 5 Drive Slot 8 Drive Slot 11

Drive Slot 3 Drive Slot 6 Drive Slot 9 Drive Slot 12

Status LEDs

Activity LEDs

Status LEDs

Activity LEDs

Status LEDs

Activity LEDs

Status LEDs

Activity LEDs

Power LED

Alarm Reset Button

(Press to Display Annunciation)

Channel

Status LED

RESET ALARM

Power Supply
Status LED

Cooling Fan
Status LED

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33

Chapter 3: Monitoring Systems

Also, on each drive carrier ar e “LitePipes.” They a re loc ated on th e lower rig ht
side of each drive carrier. The LitePipes present some of the information
provided by the front bezel drive LEDs (drive activity information and drive
fault/failure or data rebuilding notifications) when the front bezel is removed.

Drive Status LEDs

There are twelve Drive Status LEDs. The Drive Status LED is the left LED of each
pair of Drive LEDs. This LED is green when a drive is present in the slot and
powered on. If a drive is not present, the LED will be off.

Fault LED

Activity LED

LitePipes

Drive Activity LEDs

There are twelve Drive Activity LEDs. These LEDs will flash when a drive is being
accessed, either during read or write activity . The Drive Activity LED is the right
LED of each pair of Drive LEDs.

Audible alarm

An audible alarm will sound when any of the enclosure’s components change
to an abnormal state. To silence the alarm, press the Alarm Reset button located
on the front bezel. The corresponding alarm’s LED will remain il luminated until
the condition returns to a normal state.

34

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Enclosure componen t monitoring

One-touch annunciation

The “one-touch annunciation” monitoring system is an easily accessible
press-to-touch display of the SAF-TE card switch settings, enclosure bus mode,
type of host interface , serial co mmunication BAUD ra te, and controller status
using the Drive Status LEDs and the Alarm Reset button.

By pressing and holding the Alarm Reset button, the Drive Activity LEDs will
all be off and the Drive Status LEDs will turn on in unique combinations to
designate certain enclosure conditions. Below is a table that describes the Drive
Status LEDs and their meanings:

One-touc h annunci ation - dri ve status L ED inter pretatio n table

Drive Slot 1 Status
LED

Bus Configuration
On = Dual Bus
Off = Single Bus

Drive Slot 2 Status
LED

Host Interface Type
On = SCSI Host
OFF = Fibre Host

Drive Slot 3 Status
LED

Not Applicable - Not
used.

Drive Slot 4 Status
LED

Switch 1 - SCSI IDs
(A0)

On = Enabled
Off = Disabled

Drive Slot 5 Status
LED

BAUD Rate - Switch
6

On = 19,200 BAUD
Off = 9,600 BAUD

Drive Slot 6 Status
LED

Not Applicable - Not
used.

Drive Slot 7 Status
LED

Switch 2 - SCSI IDs
(A1)

On = Enabled
Off = Disabl ed

Drive Slot 8 Status
LED

Delay Start - Switch
7

On = Delay Start
Disabled

Off = Delay Start
Enabled

Drive Slot 9 Status
LED

Controller 1 - (CTRL
A)

On “GREEN” =
Good

Off = Not Installed
On “ORANGE” =

Failed

Drive Slot 10 Status
LED

Switch 3 - RAID
Addressing (RD)

On = Enabled for RAID
Off = Disabled for J BOD

Drive Slot 11 Status
LED

Remote Start - Switch 8
On = Remote Start

Disabled
Off = Remote Start

Enabled

Drive Slot 12 Status
LED

Controller 2 - (CTRL B)
On “GREEN” = Good
Off = Not Installed
On “ORANGE” = Failed

Enabled condition equals an UP switch position.
Disabled condition equals a DOWN switch position.

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35

Chapter 3: Monitoring Systems

Drive Slot 1 Drive Slot 4 Drive Slot 7 Drive Slot 10

Drive Slot 2 Drive Slot 5 Drive Slot 8 Drive Slot 11

Drive Slot 3 Drive Slot 6 Drive Slot 9 Drive Slot 12

Status LEDs

Activity LEDs

Status LEDs

Activity LEDs

Status LEDs

Activity LEDs

The following are examples of the one-touch annunciation LEDs for switch
settings and controller and bus configurations when the Alarm Reset button is
pressed.

JBOD single-bus configuration annunciation LED sample

SAF-TE switches 1 (A0) and 2 (A1) work in combinations to create a specific
range of SCSI IDs. The LED state provides the following information:

Example of LEDs

Status LEDs

Activity LEDs

36

SAF-TE Disk I/O Card

Switch Settings

S

S1BDDLR

RDA

A

0

M

0

1

1234 5678

UP (1)

DOWN (0)

Explanation of LEDs

Drive Slot 1 Drive Slot 4

Drive Slot 2 Drive Slot 5 Drive Slot 8 Drive Slot 11

Drive Slot 3

Status LEDs

Drive Slot 6 Drive Slot 9 Drive Slot 12

Activity LEDs

LED ON Condition (Green)

LED OFF Condition

Status LEDs

Drive Slot 7 Drive Slot 10

Activity LEDs

Status LEDs

Activity LEDs

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Status LEDs

Activity LEDs

Enclosure componen t monitoring

Drive slot status LED LED

Indication

condition

Drive Slot 1 Off Enclosure in single-bus mode.
Drive Slot 2 On SCSI Host Interface.
Drive Slot 3 Off N/A
Drive Slot 4 Off Switch 1 (A0) is in the DOWN position.

This will set the Driv e Slot SCSI IDs to ID
1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 13, and 14.
It reserves IDs 0 and 7 for the HBAs, and
ID 15 for the SAF-TE processor.

Drive Slot 5 Off Indicates that Switch 6 is in the DOWN

position which sets th e BAUD rate for the

SAF-TE RS-232 serial port to 9,600.
Drive Slot 6 Off N/A
Drive Slot 7 Off Switch 2 (A1) is in the DOWN position.

This will set the Drive SCSI IDs of the

slots to IDs 1, 2, 3, 4, 5, 6, 9, 10, 11, 12,

13, 14. It reserves ID s 0 and 7 for the host

bus adapter, and SCSI ID 15 for the

SAF-TE processor.
Drive Slot 8 On Switch 7 is in the UP position which sets

the Delay Start mode to be disabled.
Drive Slot 9 Off Controller is not installed.
Drive Slot 10 Off Switch 3 (reserved) is in the DOWN

position.
Drive S lo t 11 On Switch 8 is in the UP po s iti on whi ch set s

the Remote Start mode to be disabled.
Drive Slot 12 Off Controller is not installed.

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37

Chapter 3: Monitoring Systems

Enclosure monitoring using VT -100 emulation

Another feature of the enclosure is the monitoring capabilities. The
firmware-based monitoring program allows users to view storage system
component status and information about the firmware. You may access this
program by connecting a VT-100 terminal to the SAF-TE Service port.

To access the monitoring program:

1 Connect one end of the null-modem RS-232 cable to the SAF-TE Serv ice

port located on the rear panel of the enclosure.

CTRL 1

SAF-TE

CTRL 2

38

SAF-TE Service Port

The cable is a DB-9 nul l-modem serial cable.

2 Connect the other end of the cable to either a host system’s serial

communication port or a VT-100 type terminal.

3 On a host system, run a terminal emulation program or start the terminal.

www.gateway.com

Enclosure monitori ng using VT-100 emu lation

4 Verify the communication parameters are as follows:

■ 9600 Baud (optional 19,200)

Baud rate set by Switch 6 – up for 19,200 and down for 9,600 (verify
the setting by pressing the Alarm Reset button and noting the
condition of the Drive Status LED for Drive slot 5).

■ 8 Data bits

■ 1 Stop bit

■ None (parity)

■ Flow Control Off

5 At the screen cursor, press CTRL+E. The Enclosure Terminal Utility menu

appears.

6 Press the 1 key to select option 1) Show Enclosure Envir onment Status.

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39

Chapter 3: Monitoring Systems

The screen provides a status report of the internal components such as
drives, slots, temperature, cooling fan status, power supply status, and
statistics on enclosure “up time.”

System degradation will occur if the display is left in the “Show Enclosure
Environment Status” mode. After you have viewed the information press

SC to remain idle in the main Enclosure Terminal Utility screen.

E

40

7 Press ESC again to return to the Main menu.

Options 2 through 4 are factory and technical support features. Do not
access these features unless instructed to do so by a support technician.

www.gateway.com

Uploading SAF-TE controller card firmware

Uploading SAF-TE controller card
firmware

The following information describes the procedures to upload new firmware
to the SAF-TE controller card. The firmware can be uploaded in a “live”
environment. There is no need to turn off the enclosure to perform this
function.

To upload new firmware:

1 Connect one end of the null-modem RS-232 cable to the SAF-TE Serv ice

port located on the rear panel of the encl osure.

CTRL 1

SAF-TE

CTRL 2

SAF-TE Service Port

The cable is a DB-9 null -modem serial cable.

2 Connect the other end of the cable to either a host system’s serial

communication port or a VT-100-type terminal.

3 On a host system, run a terminal emulation program or start the terminal.

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41

Chapter 3: Monitoring Systems

4 Verify the communication parameters are as follows:

■ 9600 Baud (optional 19,200)

Baud rate set by Switch 6 – up for 19,200 and down for 9,600 (verify
the setting by pressing the Alarm Reset button and noting the
condition of the Drive Status LED for Drive slot 5).

■ 8 Data bits

■ 1 Stop bit

■ None (parity)

■ Flow Control Off

5 At the cursor, press CTRL+E.

The Enclosure Terminal Utility me nu appears .

42

6 Press the 5 key to select option 5) Firmware Upload.

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Uploading SAF-TE controller card firmware

7 Press the U key (lowercase) to start the upload. Using the mouse, click on

Transfers, then click Send.

8 Click the Browse button, locate the new firmware file, select it, then click

Send. The firmware file will have a “.S3R” extension.

Make sure that the protocol “Xmodem” is selected.
From the Xmodem send screen you can monitor the progress of the upload.

You can safely stop the transfer without affecting your existing firmware
any time during the transfer until it ha s been compl et ed. The uplo ad do es
not overwrite the firmware during the upload process, but it writes the new
code into unused EEPROM space until completed, then copies the new
firmware code to the EEPROM active region.

If you choose to stop an upload while in progress, make sure that the stop
(abort) command was completed by pressing C

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TRL+X at the cursor.

43

Chapter 3: Monitoring Systems

9 After the upload complete s, the Up load program updates the second

SAF-TE proce ssor.

A progress status screen appears. At 100% progress, the following screen
appears.

44

www.gateway.com

Uploading SAF-TE controller card firmware

After the confirmation is complete, the following screen appears.

10 Verify the new firmware has successfully loaded, then type CTRL+E.
11 Press ESC to return to the Main menu.

www.gateway.com

45

Chapter 3: Monitoring Systems

46

www.gateway.com

Troubleshooting

This chapter provides typical solutions for problems you
may encounter while using the enclosure.

4

47

Chapter 4: Troubleshoo ting

General enclosure problems

Symptom Reason Solution

Fails to power on. Power cord(s) not

connected correctly.
Power not available at

the outlet.
Power switch not in the

correct position.
Faulty power cord.
Faulty power supply.

Verify that the power cord is
correctly connected to the power
module.

If the enclosure is plugged into a
three-hole grounded outlet, verify
that power to the outlet has no t
been interrupted. This can be
accomplished b y testing the outlet
with a known working appliance,
like a lamp.

Be sure that the powe r switch is i n
the “On” posit ion , lab eled w ith an
“I.”

Replace the power cord.
Identify the failed PSU, see

“Replacing a power supp ly” on
page 66.

If the enclosure is not responding,
contact your service provider.

48

www.gateway.com

Common SCSI bus pro blems

Common SCSI bus problems

SCSI bus problems can usually be at tributed to c abling issues o r a faulty S AF-TE
Disk I/O card. Refer to the chart below and review troubleshooting and fault
isolation procedures to assist you in identifying the suspect component.

SCSI bus
Symptom

Host SCSI BIOS
scan hangs.

Not all drives
connected to the
HBA channels are
displayed during
boot.

Probable cause Solution

Possible termination
or SCSI ID conflict.

Possible termination
or SCSI ID conflict.

Check the Hos t ID and corre ct system
configuration.

Check that t he SCSI con nectors are correc tly
connected. Check SCSI ID assignments.

If the enclosure is the daisy-chained enclosure,
check the I/O card jumper settings in the last
enclosure on the chain.

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49

Chapter 4: Troubleshoo ting

SCSI bus
Symptom

SCSI bus hangs,
SCSI bus
excessively
retries, and/or
drives drop offline.

Probable cause Solution

Faulty connectivity.
Faulty SAF-TE Disk

I/O card (JBOD or
Daisy­chained enclosure)
or Host I/O card.

Re-check the cable connections to the SAF-TE
Disk I/O card and/or Host Disk I/O card.

If you have daisy-chained storage systems
connected on the SCSI bus, you will need to
perform some fault isolation.

If all the drives on one bus are of fline, start with the
daisy-chain storage sy stem. Disconnect the data
cable. If the remaining drives return to a normal
state it indicates that the isolated storage system
has the faulty component.

If this does not return the remaining drives to a
normal state, it is a good indication that the problem
is in the first st orage system and/or i ts SAF-TE Disk
I/O card.

You may use the SAF-TE Disk I/O card from the
other storage system or a “new” know n goo d card.
Substitute this card for the suspect card and it
should return the storage system bus to a normal
condition.

NOTE: A return to a normal condition is indicated
by the drives coming back online.

After the faulty card is repl aced, begin
re-connecting the data cable s on the SAF-TE Disk
I/O card, not ing whe the r th e SC SI bus and driv es
remain in a normal state.

Re-check the cables to the SAF-TE Disk I/O card,
Host I/O card, and the host adapter.

Replace the SAF-TE Disk I/O card or Host I/O card.

50

www.gateway.com

Terminal emulator and COM port problems

T erminal emulator and COM port
problems

Symptom Reason Solution

Screen
continuousl y puts
out garbag e
characters.

Nothing is
displayed on the
terminal emulator
screen.

Screen is
updated, but will
not respond to
keystrokes.

The likely cause of t his
problem is a baud ra te
mismatch between the
terminal emulator and th e
controller. The default
baud rate is 115,200.
Follow the
troubleshooting steps to
the right if you set your
terminal emulator to this
rate and still get garbage
characters:

The probable cause of
this problem is a bad
RS-232 cable co nnection
or swapped
transmit/receive lines.

Incorrect setting. Disable hardware flow contro l on the terminal

If you are able, shut down the controller. If
you are unable to shut down the controller,
continue to the next step.

Turn off the power to the enclosure
containing the controller.

Press the spacebar of your terminal emul ator.
Turn on the power while continuing to press

the spacebar. This will allow the controller to
auto-detect the baud rate setting.

When the Flash Util ity appe ars, sele ct option
5 to continue to boot the controller.

Some terminal emulators do not immedia tely
change to the new baud rate settings, and
you have to exit and restart the emulator to
use the new settings.

If the cable is correctly connected on both
ends, try another null modem cable.

Make sure that you are not using a straight
through RS-232 cable.

or terminal emulator. The controller supports
XON/XOFF flow control and works correctly
in most cases w ith no flow control.

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51

Chapter 4: Troubleshoo ting

Host SCSI channel problems

Symptom Solution

The host SCSI BIOS scan
hangs.

Check that termination is set correctly in the
Configuration Menu and the drive enclosure. Check
that the device ID s et in the software does not conflict
with any other devices on the host SCSI channel. If
you have a long SC SI cable , try a di fferent or shorter
cable.

Device SCSI channel problems

Problem Solution

Not all drives connected to
the contro ller device
channels are displayed
during boot, or th e co ntrolle r
hangs during display of
connected drives.

See “Setup and Installation” on page 13 to be sure
that the enclosure is correctly configured. Check
termination and ID assig nm ent. If you hav e ena bl ed
Ultra/Ultra2 SCSI on any device channels, try
disabling i t.

52

www.gateway.com

Problems during bo otup

Problems during bootup

The following sections describe problems you might encounter during power
on self-test (POST) or during bootup sequence of the enclosure and explains
how to resolve those problems. POST shows problems related to the processor,
logic, and memory.

Symptom Solution

One of the POST diagnostic
tests failed.

The system hangs at CT_srv
starting.

The system hangs during a
drive scan.

Contact Gateway Technical Support.

Follow these steps to resolve the problem:
Verify that there are no SCSI address conflicts.
Check the enclosure to make sure everything is correctly

connected.
If the enclosure and the drive work correctly, replace the

controller.
Follow these steps to resolve the problem:

Check the enclosure to make sure everything is correctly
connected.

Remove and replace the drive that failed the scan.
If the enclosure and the drive work correctly, replace the

controller.

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53

Chapter 4: Troubleshoo ting

Common problems and interpreting the LEDs

Symptom Reason Solution

Power Supply
Status LED is
orange.

Fan Status
LED is on.

Drive Status
LED is not on
and a drive i s
present in the
slot.

Power supply has failed.
Power supply turned off.
Power supply missing.
Loss of AC power to the

power supply.

Failed cooling fan. Replace cooling fan module.

Fault on the SAF-TE Disk
I/O card.

Faulty dr ive.
Faulty SAF-TE Disk I/O

card.
Faulty Host I/O card.

Replace the suspect faul ty power supply.
Make sure that all the pow e r su ppl y s w itch e s

are in their “On” position.
Replace the missing pow er suppl y and turn it

on.
Verify that correct AC power is a vailable to the

power supplies. If the enclosure is plugged
into a three-hole grounded outlet, verify that
power to the outlet has not been interrupted.
This can be accomplis hed by testi ng the
outlet with a kn own wor ki n g a pp li anc e, li ke a
lamp.

Reseat the hard drive.
Replace a faulty SAF-TE Disk I/O card.
Replace the faulty drive.
Replace the faulty SAF-TE Disk I/O card.
Replace the faulty Host I/O card.

54

www.gateway.com

Warning and error e vents

W arning and error events

There are a number of conditions that trigger warning or error events, activate
the alarm, and may affect the state of the STATUS and FAULT LEDs. The alarm
sounds mainly when monitoring software displays a warning or error event.

The alarm will silence when you acknowledge the event by pressing the Alarm
Reset button. The events in these categories are listed below.

Warnings

Warning events let you know that something related to the controller or an
array has a problem. You should correct the problem as soon as possible. The
table below defines each warning event and recommends the action you should
take.

Event Definition Recommended action

VOLT/TEMP
WARN

The analog-to-digital
converter monitored a
temperature and/or voltage
in the warning range.

Check that the controller’s fan
is runnin g. Check th at the
ambient temperature is not too
warm. See “Technical
Information” on page 73.

Errors

Error events let you know that something related the enclosure, controller, or
drives has failed and requires immediate attention. The table below defines each
error event and recommends the action you should take.

Event Defin ition Recommended action

VOLT/TEMP
FAIL

ENCLOSURE
FAIL

The analog -to-digi tal
convertor monitored a
temperature and/or voltage in
the failu re range.

Enclosure specific general
purpose I/O triggered a failure
condition.

Check that t he enclos ure fans
are running . Check th at the
ambient temperature is not too
warm. See “Technical
Information” on page 73.

Check the st atus of t he
enclosure.

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55

Chapter 4: Troubleshoo ting

Event Defin ition Recommended action

DISK CHAN
FAILED

An error has occurred in
communicating on the disk
channel.

Check the c ables on th e
channel.

Disk errors

If a disk detects an error, it reports the error, wh ich is recorded in the event
log. The following is an example of a disk-detected error.

Using the information in the Sense Key and ASC tables, you can see that this
is a medium error, unrecovered read error—recommended reassignment.

Sense key descriptions

Sense key Description

56

0h No sense
1h Recovered error
2h Not ready
3h Medium error
4h Hardware error
5h Illegal request
6h Unit attention
7h Data protect
8h Blank check
9h Vendor-specific

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Sense key Description

Ah Copy aborte d
Bh Aborted command
Bh Aborted command
Ch Obsolete
Dh Volumes overflow
Eh Miscompare
Fh Reserved

ASC and ASCQ descriptions

ASC ASCQ Description

0C 02 Write error - auto-reallocation failed.
0C 03 Write error - recommend reassignment.
11 00 Unrecovered read error.

Disk errors

11 01 Read retries exhausted.
11 02 Error too long to correct.
11 03 Multiple read errors.
11 04 Unrecovered read error - auto-reallocation

failed.

11 0B Unrecovered read error - recommend

reassignment.

11 0C Unrecovered rear error - recommend

rewrite data.
47 00 SCSI parity error.
48 00 Initiator-detected error message received.

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57

Chapter 4: Troubleshoo ting

Disk channel errors

Disk channel errors are similar to disk-detected errors, except they are detected
by the controller, instead of the drive. Some disk channel errors are displayed
as text strings, others are displayed as hexadecimal values.

The following illustration shows a disk channel error displaying the
hexadecimal codes. Most disk channel errors are informational because the
controller issues retries to correct any problem. Errors that cannot be corrected
with retries will result in another critical event.

Disk channel error codes

Error code Description

58

04 Data overrun or underrun occ urre d w h il e g etti ng sen se

data.
05 Request for sense data failed.
20 Selection time-out occurre d (dis play ed as Sel T im eout).
21 Controller detected an unrecoverable protocol error on

the part of the target.
22 Unexpected bus-free condition occurred (displayed as

Unex Bsfree).
24 Data overrun or underrun has b een detected (dis played

as Data OvUnRn).
30 T arget re ported busy status (displa yed as Dev ice Busy).
31 Target reported queue full status (displayed as Queue

Full).
32 Target has been reserved by another initiator.

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Disk channel error s

Error code Description

40 Controller aborted an I/O request to this targ et because

it timed out (displayed as I/O Timeout).
41 I/O request was aborted because of a channel reset.
42 I/O request was aborted because of controller’s

decision to reset the channel.
43 I/O request was aborted because of third-pa rty chan nel

reset (disp layed as A bort 3PRS T).
44 Controller decided to abort I/O request for reasons other

than bus or target reset.
45 I/O request was aborted because of target reset

requested by controller.
46 T arget did not get respons e correctly to abor t sequence .
4B I/O aborted due to operating mode change (such as

LVD to SE or SE to LVD) (displayed as Abort MdChg).
50 Disk channel hardware failure (displayed as DskChn

Fail). This may be the result of bad termination or

cabling.

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59

Chapter 4: Troubleshoo ting

60

www.gateway.com

Maintenance

In this chapter you will find the maintenance procedures
to replace enclosure components.

5

61

Chapter 5: Maintenance

Removing the front bezel

To remove the front bezel:

1 Rotate the two thumbscrews counterclockwise one-quarter turn to unlock

the front bezel.

R

eset A

larm

62

2 Grasp and pull the front bezel from the enclosur e.

R

e

s

e

t A

la

rm

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Replacing the cooling fans

The cooling fan module is hot-swappable.

Warning Do not operate the encl osur e for ex tended period s of tim e

(greater than five minutes) with the cooling fan module
removed. No cooling is available while the fan module is
removed.

Replacing the cooling fans

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63

Chapter 5: Maintenance

To replace a cooling fan:

1 The cooling fan module is located at the rear of the enclosure. Place your

fingers in the fan module handle and press with your thumb to release
the latch while pulling the module from the enclosure.

C

h

a

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Release latch and

pull cooling fan module

from the enclosure.

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Controller 1

2 Remove the replacement cooling fan module from the shipping container

and inspect for obvious damage. Save th e packaging material.

www.gateway.com

Replacing the cooling fans

3 Align the cooling fan module with the open fan bay and push th e module

into the enclosure until it completely seats.
The latch will reset when the module is completely seated, and the front

bezel Fan Status LED will return to a normal state (green).

4 Using the packaging material from the replacement cooling fan module,

re-package and return the failed cooling fan module per your return
instructions.

www.gateway.com

65

Chapter 5: Maintenance

Replacing a power supply

The power supply i s hot-swappable.

To replace a power supply:

1 Tu rn the On/Off switch to the “Of f” position on the affected power supply.
2 Using your thumb and forefinger, squeeze the power supply release latch

while pulling the power supply from the enclosure.

Channel 1

J

P

Channel 2

8

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pull power supply

from the enclosure.

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66

C

h

a

www.gateway.com

TERM POW

TO

SUPPL

ADD JUMPER

JP1

ER

Y

JP3

TERM POWER

TO SUPPL

ADD JUMPER

JP1

TERMINA

Y

JP2

TO DISABLE

JP3

ADD JUMPER

TION

JP4

TERMINA

JP2

TO

DISABLE

ADD JUMPER

TION

JP4

CNFG 1

CNFG 2

SPARE 1

RAID

SPARE 2

BAUD SEL

C

DLY STRT

H

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N

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3 Remove the replacement po wer supply from the shipping container and

inspect for obvious damage. Save the packaging material.

4 Install the new power supply by sliding it into its open bay and ensuring

it seats completely and the release latch resets.

5 Turn the On/Off switch to the “On” position on the replacement power

supply. The front bezel Power Supply Status LED will return to a normal
state (steady green).

6 Using the packaging material from the replacement power supply,

repackage and return the failed power supply per your return instructions.

Replacing a drive

Warning Drives and printed circu it board co mpone nts ar e sensit ive

to electrostatic discharge. To prevent operating failure or
damage, observe the following: Establish a ground for
yourself by using t he wri st grou nding s trap, or by t ouching
the metal chassis prior to handling or installing the drives
or printed circuit board components.

Replacing a drive

There is no need to turn off the enclosure or the host computer system. The
drives are hot-swap pable. Be car eful of the “P- factor” effect when removing a
drive, which is the twisting of the drive in your hand as a result of the spinning
disk. Allow the drive to completely spin down before removing it. To do this,
pull the drive slightly from its locked position and allow it to spin down, then
remove the drive.

To replace a drive:

1 Remove the front bezel as described in “R emoving the front bezel” on

page 62.

2 Identify the failed drive using the Drive Status LED. For more information,

see “Troubleshooting” on page 47 and “Drive LEDs” on page 33.

www.gateway.com

67

Chapter 5: Maintenance

3 Grasp the drive carrier handle and pull the drive from the enclo sure. If

the enclosure is on, first pull the drive slightly from its locked position
and allow it to spin down, then remove the drive.

Drive Carrier
Lock

Status and
Activity LED
LitePipe

Disk
Drive

Carrier

Tension Clips

The drive carrier has tension clips which ensures that the drive fits very
tightly. It requires some force to remove or install the drive.

4 Remove the r eplacement drive from its shipping container.
5 Inspect the drive for obvious damage. Save the packaging material.

68

6 Install the replacement drive into the carrier.

www.gateway.com

Replacing a drive

a Align the drive carrier with the rail grooves in the drive bay.
b Make sure that the drive seats completely. The drive carrier tension

clips ensure that the drive fits very tight, so it requires some forc e to
push the drive into its bay.

7 Re-install and secure the front bezel. Using a Phillips screwdriver, rotate

the fasteners clockwise one-quarter turn to lock.

8 Using the packaging materials from the replacement driv e, repackage the

failed drive and return it per your return instructions.

www.gateway.com

69

Chapter 5: Maintenance

Replacing the SAF-TE Disk I/O card

Warning The SAF-TE Disk I/O card is NOT HOT-SW APP ABLE. Y ou

must POWER DOWN the storage system to replace this
card.

To replace the SAF-TE disk I/O card:

1 Turn off the enclosure. For more information, see “Turnin g off the

enclosure” on page 29.

2 Locate the faulty SAF-TE Disk I/O card.
3 Disconnect the SCSI data cables attached to the faulty SAF-TE Disk I/O card.
4 Loosen the two thumbscrews that secure the card.

Termination Jumper

70

Channel 1

Channel 1

Channel 2

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S

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S1BDDLR

0

0

1

1234 5678

www.gateway.com

Replacing the SAF-TE Disk I/O card

5 Using the handle, gently pull the card from the enclosure.

T

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C

6 Note the position of the jumpers and the switch settings on the faulty card.
7 Remove the new replacement SAF-TE Disk I/O ca rd from the shipping

container and inspect for obvious damage . Save the packaging materials.

8 Set the jumpers and switches to match the faulty card being replaced.
9 Insert the replacement card by aligning it into the rail guides and pushing

the card until it fully seats.

10 Tighten the two thumbscrews. Do not overtighten the screws.
11 Re -connect the SCSI data cables to the replacement SAF-TE Disk I/O card.
12 Turn on the enclosure. For more information, see “Turning on the

enclosure” on page 29.

13 Using the packaging materials from the replacement card, repackage the

failed card and return it per your return instructions.

www.gateway.com

71

Chapter 5: Maintenance

72

www.gateway.com

Technical

Information

Specifications

A

73

Appendix A: Technica l Information

Technical specifications for the enclosure

Operating environment

Operating
Non-operating

Relative humidity

Operating/non-operating 5% - 95% (non-condensing)

Power requirements 100 - 240 VAC (auto-sensing)

Dimensions (H × W × D) 3.47" × 17.65" × 20.25"
Weight (w/2 power supplies) 38.55 lbs w/o drives

Altitude -200 to 10,000 feet
Number of drives supported 12 per enclosure
Total capacity 1,752 GB (146 GB Drives)

+40°F to +95°F (+5°C to +35°C)

-4°F to +158°F (-20°C to +70°C)

3.0 Ampere s (maximum )
50-60 Hz

2 x 350 Watts

58.00 lbs with twelve drives

74

Host interface Ultra320 SCSI
Drive inte rface SCA-80 Ult ra320 SCSI
I/O int erface RS-232 (Power Supply , T emperature,

and Fan monitoring)

Electromagnetic emissions requirements
(EMI)

Safety requirements ANSI/UL60950

CE compliance (EMC) 89/336/EEC EMC Directive
Shock

Operating
Non-operating

Vibration

Operating
Non-operating

www.gateway.com

FCC, Part 15, Class A
CISPR 22 EN55022-A
VCCI, BSMI

CSA #950

1.0 G, 2 - 50 ms

20.0 G, 2 - 20 ms

5 - 500 Hz, 0.25 G (pk to pk)
5 - 500 Hz, 1.0 G (pk to pk)

Port Information

Connectors

This appendix contains pin signal inform ation for the SC SI
connectors located on the SAF-TE Disk I/O and Host I/O
cards.

B

75

Appendix B: Port Inform ation

SAF-TE RS-232 serial port

Located below the I/O card slots at the rear of the enclosure are the RS-232
service ports. One RS-232 port is labeled “SAF-TE.” It provides the serial interface
to the SAF-TE Disk I/O card allowing for firmware uploads, maintenance and/or
service monitoring of the SEPs. Below is the pin signals for this port.

Null-modem cable

This cable is a DB-9 to DB-9 null-modem type.

76

www.gateway.com

Safety,

Regulatory , and

Legal Information

Regulatory compliance
statements

United States of America

Federal Communications Commission (FCC)
Unintentional emitter per FCC Part 15

This device has been tested and found to comply with the limits for a
Class A digital device, pursuant to Part 15 of the FCC rules. These limits
are designed to provide reasonable protection against harmful
interference when this device is used in a commercial environment.

C

77

Appendix C: Safety, Regu latory, and Legal Infor mation

This equipment generates, uses, and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may caus e harmful interference to radi o or television
reception. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause interference to radio and television recept ion, which can
be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:

■

Reorient or relocate the receiving an tenna

■

Increase the separation between the equipment and receiver

■

Connect the equipment to an outlet on a different circuit from that to which the receiver is
connected

■

Consult the dealer or an experienced radio/TV technician for help.

Caution Changes or modifications not expressly approved by

Gateway could voi d t he FCC comp lianc e and negate yo ur
authority to operate the product.

Canada

Industry Canada (IC)
Unintentional emitter per ICES-003

This digital apparatus does not exceed the Class A limits for radio noise emissions from digital
apparatus as set out in the radio interferenc e regulations of Industry Canada.

Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites
applicables aux appareils numériques de Classe A prescrites dans le règlement sur le brouillage
radioélectrique édicté par Industrie Canada.

California Proposition 65 Warning

Warning This product contains chemicals, including lead, known to

the State of California to ca use cancer and/or bi rth defects
or reproductive harm.

78

www.gateway.com

Notices

Copyright © 2003 Gateway, Inc.
All Rights Reserved
14303 Gateway Place
Poway, CA92064 USA

All Rights Reserved

This publication is protected by copyright and all rights are reserved. No part of it may be reproduced or
transmitted by any means or in any form, without prior consent in writing from Gateway.

The information in this manual has been carefully checked and is believed to be accurate. However, changes are
made periodically. These changes are incorporated in newer publication editions. Gateway may improve and/or
change products described in this publication at any time. Due to continuing system improvements, Gateway is
not responsible for inaccurate information which may appear in this manual. For the latest product updates,
consult the Gateway Web site at www.gateway.com
special, exemplary, incidental, or consequential damages resulting from any defect or omission in this manual,
even if advised of the possibility of such damages.

In the interest of continued product development, Gateway reserves the right to make improvements in this
manual and the products it describes at any time, without notices or obligation.

Trademark Acknowledgments

1-800-GATEW A Y , ActiveCPR, ALR, AnyKey, black-and-white spot design, CrystalScan, Destination, DestiVu, EZ
Pad, EZ Point, Field Mouse, Gateway 2000, Gateway Country, gateway .net, Gateway stylized logo, Perfect
Scholar, Solo, TelePath, Vivitron, stylized “G” design, and “You’ve got a friend in the business” slogan are
registered trademarks and black-and-white spotted box logo, GATEWA Y, Gateway Astro, Gateway@Work,
Gateway Connected touch pad, Gateway Connected music player, Gateway Cyber:)Ware, Gateway
Education:)Ware, Gateway Flex Case, Gateway Gaming:)Ware, Gateway GoBack, Gateway Gold, Gateway
Learning:)Ware, Gateway Magazine, Gateway Micro Server, Gateway Money:)Ware, Gateway Music:)Ware,
Gateway Networking Solutions, Gateway Online Network (O.N.) solution, Gateway Photo:)Ware, Gateway
Professional PCs, Gateway Profile, Gateway Solo, green stylized GATEWA Y, green stylized Gateway logo,
Gateway T eacher:)Ware, Gateway Video:)W are, HelpSpot, InforManager , Just click it!, Learn@Gateway , Kids
BackPack, SERVE-TO-ORDER, Server Watchdog, the Spotted G Gateway Logo and the Spotted G Logo,
SpotShop, Spotshop.com, and Your:)W are are trademarks of Gateway , Inc. Intel, Intel Inside logo, and Pentium
are registered trademarks and MMX is a trademark of Intel Corporation. Microsoft, MS, MS-DOS, and Windows
are trademarks or registered trademarks of Microsoft Corporation. All other product names mentioned herein are
used for identification purposes only, and may be the trademarks or registered trademarks of their respective
companies.

. In no event will Gateway be liable for direct, indirect,

www.gateway.com

79

Appendix C: Safety, Regu latory, and Legal Infor mation

80

www.gateway.com

Index

A

AC Power 7
Alarm Speaker 12, 34
Annunciation LED Sample 36

B

backplane

6

dual

Basic Connectio n Instructions

Topologies

28

C

Channel Status LED 12, 32
Components

AC Power
Channel Status LED 12, 32
Cooling Fans 8
Drive Activity LEDs 34
Drive Status LEDs 34
Fan Status LED 12, 32
Front Bezel 5
Power LED 11, 32
Power Supply 7
Power Supply Status LED 12, 32
SAF-TE Dis k I/O Card 9

Single Bus Module 6
Connectors 75
Controller Ports 10
Cooling Fan Module 8
Cooling Fans 8

7

Drive Status LED 35, 54
Drive Status LEDs 34
Drives Supported 74
dual-backplane 6

E

EMC 74
EMI 74
Enclosure Component Identification 4
Enclosure Component Monitoring 32
Enclosure Monitoring

VT-100

Error messages 55

38

F

Fails to power on 48
Fan Status LED 12, 32, 54
Features 3
Front Bezel 5

G

General 48

H

Host Cabling 28
Host SCSI Channel Problems 52

I

Interface Transfer Rate 74
Interpreting the LEDs 54

D

Dimensions 74
Disk Channel Errors 58
Disk Errors 56
Drive Activity LEDs 34
Drive Configuration

JBOD - 12

JBOD - 24 25
Drive LEDs 12, 33

21

L

LED

Channel Status
Fan Status 12, 32
Power Supply Status 12, 32

12, 32

N

Null-Modem Cable 76

81

O

One-Touch Annunciation 35
Operating Environment 74

SCSI BIOS ha ngs 49
SCSI Bus Problems 49
SCSI ID conflict 49

P

Pin Signals

Null-modem cable

SAF-TE 76
Power Requirements 74
Power Supply 7
Power Supply Status LED 12, 32
Power Suppy Status LED 54
Powering Off 29
Powering On 29
Power-On LED 11, 32

76

R

Rack Cabinet Installation 15
Relative Humidity 74
Removing the Fro nt Bezel 62
Replacing a Di sk Drive 67
Replacing a SAF-T E Disk I/O card 70
Replacing the Cooling Fans 63
RS-232 Port s 10

S

SAF-TE Card Firmware 41
SAF-TE Dis k I/O Card 9
SAF-TE RS-232 Serial Port 76
SAF-TE Service Port 10
SCSI Bus Hangs 50
SCSI Device Channel Problems 52
Sense Key Descripti ons 56
Single Bus Module 6
Specifications 73
Status Indicator LEDs 11, 32

U

Uploading Firmware 41

W

Warning events 55
Weight 74

T

Technical Specifications 74
Terminal screen problems 51
Troubleshooting

Common Problems

Interpre ting the LEDs 54

82

54

A MAN 850 SCSI JBOD USR GDE R0 8/03