Grass Valley K2 Level 3 RAID User Manual

K2 Level 3 RAID

FIBRE CHANNEL STORAGE

Instruction Manual

071-8463-00
NOVEMBER 2005

the most watched worldwide

Copyright Copyright © 2005 Thomson Broadcast and Media Solutions, Inc. All rights reserved. Printed in

the United States of America.
This document may not be copied in whole or in part, or otherwise r eproduced except as

specifically permitted under U.S. copyright law, without the prior written consent of Thomson
Broadcast and Media Solutions, Inc., P.O. Box 59900, Nevada City, California 95959-7900

Trademarks Grass Valley, K2, Profile, and Profile XP are either registered trademarks or trademarks of

Thomson Broadcast and Media Solutions, Inc. in the United States and/or other countries.
Other trademarks used in this document are either registered trademarks or trademarks of the
manufacturers or vendors of the associated products. Thomson Broadcast and Media
Solutions, Inc. products are covered by U.S. and foreign patents, issued and pending.
Additional information regarding Thomson Broadcast and Media Solutions, Inc. trademarks
and other proprietary rights may be found at www.thomsongrassvalley.com.

Disclaimer Product options and specifications subject to change without notice. The information in this

manual is furnished for informational use only, is subject to change without notice, and should
not be construed as a commitment by Thomson Broadcast and Media Solutions, Inc. Thomson
Broadcast and Media Solutions, Inc. assumes no responsibility or liability for any errors or
inaccuracies that may appear in this publication.

U.S. Government
Restricted Rights
Legend

Use, duplication, or disclosure by the United States Government is subject to restrictions as set
forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Software clause
at DFARS 252.277-7013 or in subparagraph c(1) and (2) of the Commercial Computer
Software Restricted Rights clause at FAR 52.227-19, as applicable. Manufacturer is Thomson
Broadcast and Media Solutions, Inc., P.O. Box 59900, Nevada City, California 95959-7900
U.S.A.

Revision Status

Rev Date Description

November 23,
2005

Initial release of K2 Level 3 RAID Instruction Manual. Part number
071-8463-00

2 Level 3 RAID Instruction Manual November 23, 2005

Contents

Safety Summaries..............................................................................................5

Preface..................................................................................................................11

About this manual........................................................................... ..... ...... ..............11

Using the K2 Documentation Set .......................................................................11

K2 Storage System Release Notes...............................................................12

K2 Media Client Quick Start Guides.............................................................. 12

Documentation CD-ROM........................................................... ...... ...... ........12

How this manual is organized.............................................................................12

Terminology used in this manual........................................................................13

Getting more information.........................................................................................13

On-line Help Systems.........................................................................................13

Thomson Grass Valley Web Site........................................................................13

Chapter 1 About the K2 Level 3 RAID storage

Level 3 RAID features.............................................................................................15

K2 Level 3 features.............................................................................................16

Capacity and redundancy...................................................................................16

Level 3 RAID components.......................................................................................17

Chassis...............................................................................................................18

Midplane.............................................................................................................19

Disk modules......................................................................................................19

Level 3 RAID Circuit board modules ..................................................................20

Level 3 RAID Storage Chassis circuit board modules...................................20

K2 Level 3 RAID Expansion Chassis circuit board modules .........................21

Power supplies...................................................................................................22

Configurations.........................................................................................................23

Chapter 2 Level 3 RAID Installation Information

Installation requirements .........................................................................................25

Site requirements ...............................................................................................25

Power.............................................................................................................25

Cooling...........................................................................................................25

Addressing requirements....................................................................................26

Chassis address setting requirement ............................................................26

Cabling requirements.........................................................................................26

Binding disk modules into groups.............................................. .........................27

Installing a K2 Level 3 RAID Storage in an equipment rack....................................28

Unpacking the chassis............................. ...... ....................................... ...... ..... ...28

Installing the rack mounts...................................................................................28

Inserting the K2 Level 3 RAID Storage chassis in the rack................................30

K2 Level 3 RAID Storage power-up and initialization..............................................33

Connecting electrical cables................................................ ...... ..... ....................33

Powering-up the K2 Level 3 RAID Storage system............................................33

K2 Level 3 RAID Storage power-down....................................................................34

Battery Backup........................................................................................................34

Chapter 3 Servicing the Level 3 RAID

Maintenance procedures using Grass Valley Storage Utility ..................................35

Monitoring K2 Level 3 External RAID status using NetCentral ...............................35

Interpreting front panel LEDs..............................................................................36

Primary RAID chassis ...................................................................................37

Expansion chassis ................................................................................ ..... ...37

Interpreting disk module LEDs............................................................ ...... ..............38

Interpreting controller status LEDs..........................................................................39

November 23, 2005 Level 3 RAID Instruction Manual 3

Contents

Interpreting expansion adapter sta tus LEDs....................................... ..... ............... 42

Interpreting power supply status LEDs ................................................................... 43

Removing and installing disk modules.................................................................... 43

Moving disk modules.......................................................................................... 43

Removing a disk module....................................................................................44

Installing disk module......................................................................................... 45

Replacing a RAID controller or expansion adapter................................................. 46

Removing a RAID controller or expansion adapter............................................ 46

Installing a RAID controller or expansion adapter.............................................. 47

Replacing a power supply....................................................................................... 49

Chapter 4 Level 3 RAID Technical Specifications and Operating Limits

Data handling specifications ...................................................................................55

AC power requirements .......................................................................................... 55

Size and weight....................................................................................................... 55

Cable lengths.......................................................................................................... 55

Environmental limits................................................................................................ 56

Life expectancies of components............................................................................56

Glossary...............................................................................................................57

Index...................................................................................................................... 61

4 Level 3 RAID Instruction Manual November 23, 2005

Safety Summaries

General Safety Summary

Review the following saf ety precautions to avoid injury and prevent damage
to this product or any products connected to it.

Only qualified personnel should perform service procedures.

While using this pr oduc t, you may need to acce ss oth er par ts o f the syste m.
Read the General Safety summary in other system manuals for warnings and
cautions related to operating the system.

Injury Precautions

Use Proper Power Cord

To avoid fire hazard, use only the power cord specified for this product.

Ground the Product

This product is grounded through the grounding conductor of the power
cord. To avoid electric shock, the grounding conductor must be connected
to earth ground. Before maki ng connections to the input or outpu t terminals
of the product, ensure that the product is properly grounded.

Do Not Operate Without Covers

To avoid electric shock or fire hazard, do not operate this product with
covers or panels removed.

Do Not operate in Wet/Damp Conditions

To avoid electric shock, do not operate this product in wet or damp
conditions.

Do Not Operate in an Explosive Atmosphere

To avoid injury or fire hazard, do not operate this product in an explosive
atmosphere.

Avoid Exposed Circuitry

To avoid injury, remove jewelr y such as ring s, wa tc hes , and othe r meta ll ic
objects. Do not touch ex posed conn ectio ns and compone nts when power is
present.

Product Damage Precautions

Use Proper Power Source

Do not operate this product f rom a power sour ce that applie s more than the
voltage specified.

Provide Proper Ventilation

To prevent product overheating, provide proper ventilation.

November 23, 2005 Level 3 RAID Instruction Manual 5

Safety Summaries

Do Not Operate With Suspected Failures

If you suspect there is da mage to this product, have it in spected by q ualified
service personnel.

Battery Replacement

To avoid damage, replace only with the same or equivalent type
recommended by the circuit board manufacturer. Dispose of used battery
according to the circuit board manufacturer’s instructions.

Safety Terms and Symbols

Terms in This Manual

These terms may appear in this manual:

!

!

Terms on the Product

Symbols on the Product

WARNING: Warning statements identify conditions or practices that can
result in personal injury o r loss of life.

CAUTION: Caution statements identify conditions or practices that may
result in damage to equipment or other property, or which may cause
equipment crucial to your business environment to become temporarily
non-operational.

These terms may appear on the product:

DANGER indicates a personal injury hazard immedi ately access ible as one
reads the ma rking.

WARNING indicates a personal injury hazard not immediately accessible
as you read the marking.

CAUTION indicates a hazard to property including the product.

The following symbols may appear on the product:
DANGER high voltage

Protective ground (earth) terminal

!

6 Level 3 RAID Instruction Manual November 23, 2005

ATTENTION – refer to manual

Service Safety Summary

!

Do Not Service Alone

Disconnect Power

Use Care When Servicing With Power On

WARNING: The service instructions in this manual are intended for
use by qualified service personnel only. To avoid personal injury, do
not perform any servic ing unless you are qualified t o do so. Refer to al l
safety summaries before performing service.

Do not perform interna l service or adj ustment of this pro duct unless anothe r
person capable of rendering first aid and resuscitation is present.

To avoid electric shock, discon nect the main power by means of the power
cord or, if provided, the power switch.

Dangerous voltages or cur rents may exist in t his product. Discon nect power
and remove battery (if applicable) before removing protective panels,
soldering, or replacing components.

To avoid electric shock, do not touch exposed connections.

Certifications and Compliances

Canadian Certified Power Cords

Canadian approval includes the products and power cords appropriate for
use in the North America power network. All other power cords supplied are
approved for the country of use.

FCC Emission Control

This equipment 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 the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and, if
not installed and use d in accordance with th e instruction ma nual, may cause
harmful interfere nce to radio communication s. Operation of thi s equipment
in a residential area is likely to cause harmful interference in which case the
user will be required to cor rect the interference at his own expense. Changes
or modifications not expressly approved by Grass Valley can affect
emission compliance and could void the user’s authority to operate this
equipment.

November 23, 2005 Level 3 RAID Instruction Manual 7

Safety Summaries

Canadian EMC Notice of Compliance

EN55103 1/2
Class A Warning

FCC Emission Limits

This digital apparatus does not exceed the Class A limits for radio noise
emissions from digital apparatus se t out in the Radio Interference
Regulations of the Canadian Department of Communications.

Le présent appareil numérique n’émet pas de bruits radioélectriques
dépassant les limites applicables aux appareils numériques de la classe A
préscrites dans le Règlement sur le brouillage radioélectrique édicté par le
ministère des Communications du Canada.

This product has been evaluated for Electromagnetic Compatibility under
the EN 55103-1/2 standards for Emissions and Immunity and meets the
requiremen ts for E4 environment.

This product complies with Class A (E4 environment). In a domestic
environment this product may cause radio interference in which case the
user may be required to take adequate measures.

This device complies with Part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) This device may not cause harmful
interference, and (2) this device m ust accept any interfer ence received,
including interference that may cause undesirable operation.

Laser Compliance

Laser Safety Requirements

The device used in thi s product is a Class 1 certi fied laser product. Opera ting
this product outsi de spe cifications or alteri ng its original design may result
in hazardous radiati on exposure, and may be consi dered an act of modifyi ng
or new manufacturing o f a laser product under U.S. regula tions contained i n
21CFR Chapter 1, subchapter J or CENELEC regulations in HD 482 S1.
People performing such an act are re quired by law to re certify and reid entify
this product in accordance with provisions of 21CFR subchapter J for
distribution within th e U.S.A., and in accordance with CENELEC HD 482
S1 for distr i bution within countrie s using the IE C 825 stand ard.

Laser Safety

Laser safety in the United States is regulated by the Center for Devices and
Radiological Health ( CDRH). The la ser safety regulations are publ is hed i n
the “Laser Product Performance Standard,” Code of Federal Regulation
(CFR), Title 21, Subchapter J.

The International Electrotechnical Commission (IEC) Standard 825,
“Radiation of Laser Produ cts, Equipmen t Classific ation, Requi rements and
User’s Guide,” gov erns laser products outside the Unit ed States. Europe and
member nations of the European Free Trade Association fall under the
jurisdiction of the Comité Européen de Normalization Electrotechnique
(CENELEC).

8 Level 3 RAID Instruction Manual November 23, 2005

Safety Certification

This product has been evaluated and meets the following Safety
Certificat ion Standards:

Standard Designed/tested for compliance with:

UL1950 Safety of Information Technology Equipment,

IEC 950 Safety of Information Technology Equipment,

CAN/CSA C22.2,
No. 950-95

EN60950 Safety of Information Technology Equipment,

Disposing of your used product

In the European Union — EU-wide legislation as implemented in each
member state requires that used electrical and electronic products carrying
the mark at left must be disposed of separately from normal household
waste. The equipment with this mark may include electrical accessories
(e.g. memory cards). When you dispos e of such produc ts, please follow the
agreements made between you and Grass Valley. Th e mark on the elect rical
and electronic produc ts only applies to the c urrent European Union Membe r
States. This statement is in compliance with European Commission
Directive 2002/96/EC Waste Electrical and Electronic Equipment.

including Electrical Business Equipment (Third
edition).

including Electrical Business Equipment
(Second edition, 1991).

Safety of Information Technology Equipment,
including Electrical Business Equipment.

including Electrical Business Equipment 1992.

Outside the European Un ion — If you wish to dispo se of used electric al and
electronic produc ts outside o f the European Un ion, please c ontact your local
authority and ask for the correct method of disposal.

November 23, 2005 Level 3 RAID Instruction Manual 9

Safety Summaries

10 Level 3 RAID Instruction Manual November 23, 2005

Preface

About this manual

The K2 Level 3 Fibre Channel RAID Storage Chassis provides RAID protected
storage for the K2 St orage System. If you are r espons ible for i nstal ling a nd ser vicin g
K2 Level 3 RAID storage, you should read this manual.

Using the K2 Documentation Set

The following illustration shows the recommended order in which to reference the
documentation.

Path for the installer of K2 Media Client models with internal storage

Grass Valley

K2 Manual

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Φαμιλψ οφ ΞΠ Σερ

Φαμιλψ οφ ΞΠ Σερ

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K2 Media Client
Release Notes

Contains the latest information
about the hardware and
software shipped with the
system. Packaged with K2
Media Client.

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e

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k

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2

is

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psy

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h

Quick Start Guide

Contains the essential steps for
installing the K2 Media Client.
SD-only and HD/SD models each
have their own version, packaged
with the K2 Media Client.

K2 Media Client
System Guide*

Contains the product
specifications and
step-by-step instructions for
modifying system settings.

Documentation

CD

Path for the installer of the K2 Storage System with connected K2 Media Clients

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Φαμιλψ οφ ΞΠ Σερ

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Γρασσ ςαλλεψ Γρ

Φαμιλψ οφ ΞΠ Σερ

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Φαμιλψ οφ ΞΠ Σερ

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K2 Media Client and
K2 Storage System**
Release Notes

Contains the latest
information about the
hardware and software
shipped with the system.

Path for the operator

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K2 Media Client
Release Notes

Contains the latest
information about the
hardware and software
shipped with the system.

Grass Valley

K2 Manual

Documentation

CD

K2 Storage System
Instruction Manual*

Contains instructions for installing
and configuring K2 Storage
(external) with your K2 Media
Client and K2 Media Server.

Grass Valley

K2 Manual

Documentation

CD

K2 Media Client
User Manual*

Contains information for using
the user interface to record,
play and manage clips and to
configure channels.

Find the K2 Documentation CD packaged with K2 Media

*

Clients and with K2 RAID Storage devices, primary chassis.

Find the K2 Storage System Release Notes packaged with

**

K2 RAID Storage devices, primary chassis.

Grass Valley

K2 Manual

Documentation

CD

K2 Media Client
System Guide*

Contains the product
specifications and
step-by-step instructions for
modifying system settings

Grass Valley

Documentation

Other Manuals*

These manuals include:

- Quick Start Guide

- User Manual

- Service Manual

- RAID Storage manuals

Documentation descriptions

Use the following descriptions to choose the other documentation you need as you
install, operate, and maintain your system.

Grass Valley

Grass Valley

K2 Manual

K2 Manual

K2 Manual

CD

November 23, 2005 Level 3 RAID Instruction Manual 11

Preface

K2 Storage System Release Notes

The release notes contain the latest information about the software shipped on your
system. Th e information in this document includes software upgrade instructions ,
software specificat ions and require ments, feature cha nges from the previo us releases,
and any known problems. Because release notes contain the latest information, they
are printed out rather tha n included in the Documentati on CD-ROM. You can find the
release notes packaged with the RAID storage chassis.

K2 Media Client Quick Start Guides

The Quick Start Guides provides step-by-step installation instructions for basic
installation and op eration o f the SD-onl y and the HD/S D K2 Media Cli ent, includi ng
recording and playing clips. You can find the Quick Start Guide for your particular
model packaged with the K2 Media Client.

Documentation CD-ROM

Except for the release notes and Quick Start guide, the full set of support
documentation, including this manual, is available on the Documentation CD-ROM
that you receive with your K2 Media Client. You can find the Documentation
CD-ROM packaged with the RAID storage chassis.

The Documentation CD-ROM includes the following:

•

K2 Storage System Instruction Manual — Contains installation, configuration, and

maintenance procedures for shared storage options.

RAID Instruction Manuals — There is an Instruction Manual for each type of RAID

•
storage device that can be a part of a K2 Media Client. These manuals contain
procedures for configuring and servicing the device.

K2 Media Client System Guide — Contains the product specifications and

•
step-by-step instructions for modifying syst em settings. Includes instructions for
adding a K2 Media Client to the K2 Storage System.

K2 Media Client User Manual — Describes the K2 Media Client and provides

•
instructions for configuring and operating the product.

K2 Media Client Service Manual — Contains information on servicing and

•
maintenance.

How this manual is organized

The K2 Level 3 RAID Storage Inst ruction Manual is or ganized around the tas ks you’ll
be performing to install and service your Fibre Channel RAID External Storage
System. You can see this reflected in the cha pter titles chosen for this manual. The
following identifies and describes the chapters included in this manual:

Chapter 1, About the K2 Level 3 RAID storage

Introduces the K2 RAID S torage. You can read this chapter to get familiar with the
K2 Level 3 RAID external storage key features and components.

Chapter 2, Level 3 RAID Installation Information

Describes how to install a K2 RAID Storage and K2 Level 3 Expansion Chassis,
including rack mountin g. Ref er to the K2 Media Client System Gui de for connection
and configuration information.

12 Level 3 RAID Instruction Manual November 23, 2005

Chapter 3, Servicing the Level 3 RAID

Describes how to replace FRUs, such as disk modules, and add disk modules and
redundant FRUs.

Chapter 4, Level 3 RAID Technical Specifications and Operating Limits

This appendix consists of electrical and environmental specifications.

Glossary

The Glossary explains terms used throughout this manual.

Terminology used in this manual

K2 Media Client models with inte rnal storage access their own RAID pr otected media
storage drives, as a “s tandalone” system. K2 Media Client models wi th external
storage access RAID protected media storage drives that are in a separate RAID
chassis, such as the K2 Level 3 Fibre Channel RAID Storage Chassis. In order to
avoid confusion between the two types of storage, the following terms will be used
consistently throughout the K2 documentation:

K2 Storage System: specifically refers to external, or shared, storage.
K2 Media Client internal storage: refers to the internal storage system used in a

standalone K2 Media Client.

Terminology used in this manual

Getting more information

Product information is readily available at the following sources:

On-line Help Sy st e m s

K2 Media Client Help — You can access the on-line help through the AppCenter user

interface as follows:

• In the menu bar select
drop-down menu.

NetCentral Help — From the NetCentral interface access on-line help as follows:

• For general help with NetCentral manager, select

• For help specific to monitoring K2 Media Client system devices, select

Device Providers

Thomson Grass Valley Web Site

This public Web site contains all the latest manuals and documentation, and
additional support information. Use the following URL.

http://www.thomsongrassvalley.com.

Help, then choose AppCenter Help Topics from the

and then select the monitored device.

Help | NetCentral Help Topics.

Help |

November 23, 2005 Level 3 RAID Instruction Manual 13

Preface

Grass Valley Product Support

To get technical as sista nce , check on the stat us of pro blems, o r repo rt ne w proble ms,
contact Grass Valley Product Support via e-mail, the Web, or by phone or fax.

Web Technical Support

To access support infor mation on t he Web, visit the pr oduct support Web page on the
Grass Valley Web site. You can download software or f ind sol ut ion s t o pr obl ems by
searching our Frequently Asked Questions (FAQ) database.

World Wide Web: http://www.thomsongrassvalley.com/support/
Technical Support E-mail Address: [e-mail].

Phone Support

Use the following information to contact product support by phone during business
hours. Afterhours phone support is available for warranty and contract customers.

United States [phone] (Toll Free) France [phone]
Latin America [phone] ( Toll Free) Germany [phone]
Eastern Europe [phone] Greece [phone]
Southern Europe [phone] Hong Kong [phone]
Middle East [phone] Italy [phone]
Australia [phone] Netherlands [phone]
Belgium [phone] Poland [phone]
Brazil [phone] Russia [phone]
Canada [phone] (Toll Free) Singapore [phone]
China [phone] Spain + 34 91 512 03 50
Denmark [phone] Sweden [phone]
Dubai + 971 4 299 64 40 Switzerland [phone]
Finland [phone] UK [phone]

Authorized Support Representative

A local authorized s upport repre sentative ma y be availabl e in your coun try. To locat e
the support represe ntative for yo ur country, visi t the product s upport Web page on t he
Grass Valley Web site.

14 Level 3 RAID Instruction Manual November 23, 2005

Chapter 1

About the K2 Level 3 RAID storage

This chapter introduces the K2 RAID Storage. Topics include:

• “Level 3 RAID features” on page 15

• “Level 3 RAID components” on page 17

• “Configurations” on page 23

Level 3 RAID features

The K2 Level 3 RAID Stor age is used in Level 3 and Level 3R K2 Storage Systems.
The RAID storage device is a high performance, high availability mass storage
system. The L3 RAID chassis 2Gb/s host interface supports industry standard Fibre
Channel technology.

L3 RAID
Expansion
Chassis

L3 RAID
Chassis

November 23, 2005 Level 3 RAID Instruction Manual 15

Chapter 1 About the K2 Level 3 RAID storage

Four FC host ports are available, so that the L3 RAID chassis can be connected
directly to up to four media servers without Fibre Channel switches. The L3 RAID
chassis utilizes dual FC-AL technology, allowing four loop configurations within a
single chassis. Port-BypassCircu its have been ad ded to maint ain loop integ rity during
failures without user intervention. Each loop and associated Port Bypass Circuits
along with all other active components are on redundant, separate hot swappable
modules. With two RAID Controllers, the two loops within a single standard chassis
are configured as a single loop with a backup loop in standby mode.

High-performance RAID processors that enable inter-controller communication at
2Gb/s are installed to implement the shared memory system. This feature not only
enhances the performance, but also helps dynamic load balancing of the host
interfaces.

The Switch based disk enclosures permits hi gh- speed access to the d isk dr ive s being
used.

The L3 RAID chassis cont ains from fi fteen low prof ile 3.5" Fi bre Channel Ar bitrated
Loop (FC-AL) disk drives. The chassis also supports one or two hardware RAID
Controllers in one 3U high rack-mountable chassis.

The L3 RAID Expansion Chassis provides additional storage capacity. The
Expansion Chassis has one or two Expansion Adapters installed. Up to seven L3
RAID Expansion Chassis can be connected to a single L3 RAID chassis comprising
a single disk-array storage system with up to 120 drives.

NOTE: Grass Valley does not support mix ing disk drives of differing capaciti es in
a file system stripe group.

K2 Level 3 features

The K2 Level 3 provides 350 MB/s maximum data rate. Optical cables connect to
hosts, such as to a K2 Media Server or to a Fibre Channel switch.

The Level 3 RAID suppor ts up to seven K2 Level 3 RAID Expans ion Chassis. It does
not support connection to PFC500E, PFR500E, PFR600E, or PFR700E RAID
Expansion Chassis .

Capacity and redundancy

The level 3 RAID contains five, ten, or fifteen low profile 3.5" Fibre Channel
Arbitrated Loop (FC-AL) di sk drives . The chassis a lso suppor ts one or t wo hardware
RAID controllers in one 3U high rack-mountable chassis. The Level 3 RAID
currently uses 73GB, 146GB or 300GB drive capacit ies. Wit h 15 drives, one chassis
holds up to 876GB, 1.7TB, or 3.6TB depending on the disk drive option.

The Level 3 Expansion Chassis provides additional storage capacity. Up to seven
Level 3 Expansion Chassis can be connected to a single K2 RAID Storage Chassis
comprising a single disk-array storage system with a total of 120 drives and
approximately 1.7TB, 3.4TB, 7.2TB of storage depending on the disk drive option.
This provides for cost effective storage expansion as requirements grow.

16 Level 3 RAID Instruction Manual November 23, 2005

Level 3 RAID components

The Level 3 RAID components are:

• The chassis with passive midplane board

• One or two RAID controllers (K2 Level 3R) or two expansion adapters

• As many as fifteen Fibre Channel disk drives per chassis

• Two RAID chassis power supplies (K2 Level 3) or expansion chassis power
supplies

Any unoccupied slot (RAID c ontroller or disk mo dule) has a filler modu le to maintain
air flow and compliance w ith electromagnetic interference (EMI) standar ds.

The RAID controllers, expansion adapters, disk drives and power supplies are
hot-swappable field replaceable units (FRUs), which means you can add or replace
them while the Level 3 RA ID is powere d up.

IMPORTANT: You must not hot swap operational RAID controllers or disk drives
without first disa bling th e target compo nent usin g the Grass Vall ey Stora ge Util ity.

An optional second RAID controller module in the Level 3 RAID, allows for
continued access to the Level 3 RAID if the primary RAID controller fails. Refer to
the K2 Storage System Instruc tion Manual f or detail ed conn ectio n and config urati on
instructions.

Level 3 RAID components

The following figure shows the RAID Storage Chassis components. Details on each
component follow the figure.

November 23, 2005 Level 3 RAID Instruction Manual 17

Chapter 1 About the K2 Level 3 RAID storage

Controller 1

Chassis

Controller 0

Power Supply 1

Chassis

Power Supply 0

NOTE: Every Level 3 RAID chassis power supply includes a backup bat tery so that
if electrical power is lost, data stored in cache memory will be saved. (Used for
nearline storage only.)

The chassis is a sheet-metal housing that contains a passive midpl ane and chassis slots
for the RAID controllers or expansion adapters, disk drives, power supplies, and the
LAN card.

A RAID chassis (which houses one or two RAID controllers) has a pre-set chassis
address of 0. An expansion chassis (which houses one or two expansion adapters)
must have its chassis a ddress manuall y configured. This address i s set by a cont rol on
the expansion adapter. Refer to your K2 Storage System Instruction Manual for
information on setting the chassis address switch. See also, “Addressing

requirements” on page 26.

The following diagram shows how disk modules are identified based on the chassis
address and physical location. The chassis with an address set to 0 contains drives
from 00 to 0E; the expansion chassis with an address se t to 1 contains drives from 10
to 1E.

18 Level 3 RAID Instruction Manual November 23, 2005

Primary chassis

Midplane

Chassis

Address

An operating primary RAI D chassis must ha ve, at a minimum, the first three physical
drives (00 - 02) installed, as the RAID configuration information is written to these
drives. Microcode is also written to these disks when RAID controller microcode is
loaded.

Midplane

0 000 010 020 030

Disk

ID

Expansion chassis

1 101 111 121 131

04

0 050 060 070 080 090

Disk Modules

14

1 151 161 171 181 191

Disk Modules

0

A

0

0

B

0

0

C

0

0

D

0

0

E

1

A

1

1

B

1

1

C

1

1

D

1

1

E

The midplane distribute s power and signals to all the chassis co mp onen ts . All FRUs
plug directly into midplane connec tors.

Disk modules

Each disk module consists of a Fibre Channel disk drive in a carrier assembly. If a
disk drive fails, and needs replacing, you can do so while the RAID Storage Chassis
is powered up. Replacement disk drives begin rebuilding immediately after being
installed. (See “Removing and installing disk modules” on page 43.)

The disk drives are 3.5-inch FC-AL drives that conform to the Fibre Channel
Arbitrated Loop (FC-AL) standards and support dual-port FC-AL interconnects
through the two RAID controllers and their cabling.

November 23, 2005 Level 3 RAID Instruction Manual 19