Quantum SNC 4500, SNC 4501, SNC 450x User Manual

SNC

450x User’s Guide

ADVANCED DIGITAL INFORMATION CORPORATION

www.adic.co



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Published: December 2004 Document Number: 6-00998-04 Rev A

Contents

1 Introduction 1

Intended Audience. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Associated Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Explanation of Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Environmental Notices and Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Product Recycling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Electrostatic Discharge (ESD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Getting More Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

ADIC Technical Assistance Center . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2 SNC Description 3

SCSI Ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Ethernet Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Operating Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

SNC 4500 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

SNC 4501 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Operating Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3 Getting Started 7

Before Installing the SNC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Installing the SNC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Installing the SNC 4500 on a Desktop. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Installing the SNC 4500 in a Rack. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Installing the SNC 4501. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Connecting the SCSI Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Cabling the SNC 4501 to the Scalar 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Cabling the SNC 4500 to the Scalar 100: Four or Six LTO-1 or SDLT Drives . . . . . . . . . . . . . . . . 12

Cabling the SNC 4500 to the Scalar 100: Four or Six LTO-2 Drives. . . . . . . . . . . . . . . . . . . . . . . . 15

Connecting to the Serial Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Connecting to the Ethernet Management Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Completing the Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

SNC 450x User’s Guide iii

4 Configuring the SNC 25

Opening an SNC Manager Session . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Changing the Default Username and Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Setting the Date and Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Naming the SNC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Connecting to the Ethernet Data Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Mapping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Mapping Devices Automatically. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Mapping Devices Manually . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Other Ways of Connecting to and Monitoring the SNC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Using Telnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

5 Updating Firmware 33

Updating Firmware Using FTP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Updating Firmware Using ZModem. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

6 Using the SNC Manager Interface 35

Navigating SNC Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Checking Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Configuring the Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Configuring the Time and Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Configuring the Ethernet Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Configuring the SCSI Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Configuring iSCSI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Configuring the SNC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Mapping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Configuring Advanced Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Restarting the Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Getting Help. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

7 Troubleshooting 41

Check the Host Event Log. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Check the SNC Event and Trace Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Visually Inspect LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Check for Problems on Attached Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Check Host Versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Check SNC Product Versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Component Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Checking SCSI Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Checking the SNC SCSI Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Checking the Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Checking the SNC Internal Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Checking SNC Ethernet Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Checking the LAN/WAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Checking the iSCSI Host Adapter or NIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Checking the iSCSI OS Driver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

iv Contents

Checking the Operating System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Checking the Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Performance Issues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Checking SCSI Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Checking the SNC SCSI Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Checking the SNC Ethernet Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Checking the LAN/WAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Checking the Ethernet Host Adapter or NIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Checking the Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Checking the Host System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Checking the Operating System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Using Jumbo Frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Updating Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

8 Management Port Command Reference 51

Using the Command Line Interface (CLI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Alphabetical Listing of Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

9 Removal and Replacement Procedures 103

Handling ESD-Sensitive Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Removing the SNC 4500. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Replacing the SNC 4500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Before Removing and Replacing the SNC 4501 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Removing the SNC from the Scalar 24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Replacing the SNC from the Scalar 24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

10 iSCSI Performance Tuning 107

Network Speed and Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

GbE HBAs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

GbE Network Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

GbE Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Host Ethernet Software Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

TCP/IP Window and Buffer Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

A Regulatory Notices 111

FCC Standards: Radio and Television Interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Class A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Canadian Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

European Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

VCCI Notices (Japan Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

BSMI Notice. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

SNC 450x User’s Guide v

vi Contents

Introduction

This manual provides information and instructions that support the installation and operation of two ADIC Storage Networking Controllers, the SNC mounted SCSI over IP (iSCSI) connectivity unit used with the Scalar 100. The SNC 4501 is an iSCSI unit mounted internally in the Scalar 24. Both units support Gigabyte Ethernet speeds. This document uses SNC 450x to refer collectively to the SNC 4500 and the SNC 4501.

4500 and the SNC® 4501. The SNC 4500 is an external, rack-

Intended Audience

This guide is intended for operators, administrators, and maintenance personnel who interact with the SNC 4500 and SNC 4501 hardware.

Associated Documents

The following documents are associated with this guide:

• Scalar 24 Installation and Operation Guide (62-2301-xx)

• Scalar 100 User’s Guide (6-00667-xx)

Explanation of Symbols

These symbols appear throughout this document to highlight important information:

Note

CAUTION

WARNING

SNC 450x User’s Guide 1

Indicates important information that helps you make better use of your system.

Indicates a situation that may cause possible damage to equipment, loss of data, or interference with other equipment.

INDICATES A POTENTIALLY HAZARDOUS SITUATION WHICH, IF NOT AVOIDED, COULD RESULT IN DEATH OR BODILY INJURY.

Environmental Notices and Statements

Environmental notices and statements that relate to the SNC 450x include the following:

Product Recycling

This unit contains recyclable materials that must be recycled according to local regulations wherever processing sites are available.

Electrostatic Discharge (ESD)

ESD is a sudden flow of electric current through a material that is normally an insulator.

CAUTION

Never open the cover of the SNC as this exposes ESD-sensitive parts and voids the warranty.

Getting More Information

If you want more information about your product, visit the ADIC website or contact the ADIC Technical Assistance Center (ATAC).

ADIC Technical Assistance Center

If problems cannot be solved with the aid of this document or if training is desired, contact the ADIC Technical Assistance Center (ATAC).

In the USA: 800-827-3822

In Europe and Japan: 00-800-9999-3822

For other contact numbers: www.adic.com/contact

To open a Service Request online: www.adic.com/techsup

2 Introduction

SNC Description

The SNC 4500 and SNC 4501 are Gigabit Ethernet (GbE) to SCSI Storage Networking Controllers that enable iSCSI protocol support for your Scalar 100 and Scalar 24. Visit www.adic.com types currently supported by the SNC 4500 and SNC 4501.

The SNC 450x port, a serial management port, and two SCSI ports. The SNC 4500 has a 100-240V 50-60Hz auto sensing power supply. A US and European power cable are provided. The SNC 4501 receives power directly from the Scalar 24.

The SNC 4500 is installed externally to the Scalar 100 in standard 19" racks or free standing near the library. The SNC 4501 is integrated into the Scalar 24.

includes two Ethernet data ports, an Ethernet management port that may be used as a data

SCSI Ports

The two SCSI ports use independent buses and connect storage devices into the iSCSI SAN. The ports are Ultra 3 LVD/SE SCSI buses with a “P” interface and VHDCI connector. These ports are terminated internally. They provide 160 MB/sec maximum throughput, and are downwardly compatible with all forms of single-ended SCSI. For the position of the SCSI ports on the SNC 4500, see Figure 1 of these ports on an SNC 4501, see Figure 2

to see a list of drive

. For the position

1. This document uses the term SNC 450x to refer collectively to the SNC 4500 and the SNC

4501.

SNC 450x User’s Guide 3

Figure 1 SCSI Ports and Ethernet Ports on the SNC 4500

Figure 2 SCSI Ports and Ethernet Ports on the SNC 4501

Ethernet Ports

CAUTION

The two independent 10/100/1000 Ethernet RJ45 data ports support TCP/IP-based data transfer. These two ports are also referred to as “dp0” and “dp1.” They are labeled Ethernet ports 0 and 1 on the SNC 4500 in Figure 1

A separate 10/100/1000 Ethernet standard RJ45 management port provides monitoring and management through the SNC Manager, the management GUI. This port is labeled Ethernet port 2 on the SNC 4500 in

Figure 1

In the command line interface, data ports are referred to as “dp0” and “dp1” and the management port is referred to as the “mp0.”

4 SNC Description

and on the SNC 4501 in Figure 2.

and on the SNC 4501 in Figure 2. It may also be used as a data port.

For best performance, all cabling, network interface cards (NICs), host bus adapters (HBAs), and network switches must be Gigabit Ethernet (GbE), and at least Cat 5e certified. Most standard offices use 2-pair wiring which is not compatible. GbE requires 4-pair wiring. For best performance, support for 9014 byte jumbo frames should be available for all switches and host iSCSI equipment.

Serial Port

The RS-232 serial port is an RJ-11 connection used to connect this port to the serial port on a service computer. The position of the RS-232 serial port on an SNC 4500 can be seen in Figure 8 position of the RS-232 serial port on an SNC 4501 is shown in Figure 9

on page 19.

on page 19. The

Note

The serial port provides support for remote monitoring and management when you use a terminal session to access the command line interface (CLI).

The serial port is configured at:

• Baud rate: 115,200 bits per second

• Data Bits: 8

• Parity: None

• Stop Bits: 1

• Flow Control: None

• Terminal type: ASCII

• Echo: off

To configure the management port IP address, you must use either the serial port or the library operator panel.

Operating Specifications

This section contains the physical, electrical, and environmental specifications for the SNC 4500 and SNC

4501.

SNC 4500 Dimensions

• Depth: 33.02 cm (13 in.)

• Height: 4.37 cm (1.72 in.)

• Width: 48.26 cm (19 in.)

• Weight: 4.53 kg (10 lbs.)

SNC 4501 Dimensions

• Depth: 17.78 cm (7 in.)

• Height: 7.62 cm (3 in.)

• Width: 15.24 cm (6 in.)

• Weight: 1.13 kg (2.5 lbs)

Operating Environment

The operating environment is as follows:

• Operating temperature: 10° to 40°C (50° to 104°F) external

• Blower and airflow: Be sure there is sufficient airflow to the rack or library.

SNC 450x User’s Guide 5

For the SNC 4500, air enters through the slots in the rear panel and exits through the blower on the far end of the rear panel.

• Humidity: 10 to 90% non-condensing

Power

The SNC 4501 is powered by the Scalar 24.

The power for the SNC 4500 is as follows:

• Input voltage: 120–240 VAC, 50–60 Hz, fused on the power supply.

• Power draw: 15 Watts

• Battery-backed event log SRAM: Typically the rechargeable Lithium ion battery cell holds memory for more than 30 days during power off. Recharging begins automatically when power is restored to the system. The battery is shipped fully charged from the factory. The SNC should be left on to keep the battery charged. If the SNC is left unpowered for long periods of time, you may need to reset the time and date. For instructions, refer to Setting the Date and Time

on page 26.

6 SNC Description

Getting Started

This chapter describes how to install the SNC 450x and how to configure the serial port and the Ethernet management port. It also contains information about SCSI device cabling and Ethernet data port cabling.

Before Installing the SNC

Before you begin installing the SNC 450x, be sure to check or complete the following:

• If you are managing your iSCSI system across a WAN and your system uses a firewall, be sure that the following ports are open and available:

If you are using the TCP protocol

• telnet (port 23)

• http (port 80)

• ftp (ports 20 and 21)

• iscsi (port 3260)

• iSNS (port 3705)

If you are using the UDP protocol

• ntp (port 123)

• SNMP (port 161)

• Be sure your host system is set up and configured.

• Your host system can use any of three different types of cards: a network interface card (NIC),

a TCP/IP offload engine card (TOE), or a storage network interface card (SNIC).

• Obtain the SNC driver file, "SNC Null Driver for Windows 200X", from www.adic.com. Unpack

the ZIP file to a temporary directory on your host. Follow the directions to install the driver in the Readme.txt file or, after you have installed the SNC and the host posts a message saying it has located an unknown system device, point the host at the SNC device driver.

It is recommended that you configure host access through a switch.

CAUTION

For more information about preparing your system, refer to iSCSI Performance Tuning

SNC 450x User’s Guide 7

on page 107.

Installing the SNC

The SNC 4500 is installed on a desktop or in a rack near the Scalar 100. The SNC 4501 is installed directly into the rear of the Scalar 24.

Installing the SNC 4500 on a Desktop

1 Place the SNC 4500 on a desktop near the Scalar 100.

2 Connect the SNC AC power cord from the SNC to a proper AC source outlet.

Note

3 Proceed to the section Connecting the SCSI Ports

The SNC should be left on to keep the battery charged. If the SNC is left unpowered for long periods of time, you may need to reset the time and date. For instructions, refer to Setting the Date and Time

on page 11.

on page 26.

Installing the SNC 4500 in a Rack

1 Using the screws provided, screw the bracket’s flat side to one side of the SNC, matching the holes in

the bracket with the holes in the SNC as shown below.

2 Repeat on the other side.

8 Getting Started

3 Fasten the SNC with the brackets to one side of the rack’s rail pairs using 10/32 pan head screws with

lock and flat washers (not provided).

4 Repeat on the other side.

5 Connect the SNC AC power cord from the SNC to the proper AC source outlet.

Note

6 Proceed to the section Connecting the SCSI Ports

on page 11.

on page 26.

Installing the SNC 4501

1 If the Scalar 24 is on, turn the power off.

2 Locate the SNC slot on the rear of the Scalar 24.

SNC 450x User’s Guide 9

3 Loosen the four thumbscrews on the cover plate and remove the cover plate.

Note

Store the cover plate in a convenient place. You must replace it later for proper operation and cooling of the library if the SNC is removed.

10 Getting Started

4 Orient the SNC so that the SCSI ports are on the bottom and the handle is on the left.

5 Slide the SNC into the bay until it matches with the connector and power receptacle. Then tighten the

thumbscrews.

6 Ensure that the AC power cord is plugged into the proper AC source outlet.

Note

on page 26.

Connecting the SCSI Ports

SNC SCSI ports are used to connect SCSI storage devices (drives) and media changers. Each SCSI port is independent from the other SCSI port.

Because each bus is independent, each bus is capable of supporting 15 devices and transfer rates of 40, 80, or 160 MB/sec. (Ultra, Ultra2, or Ultra3). When using a SNC 4500 or SNC 4501, one tape drive per SCSI bus is recommended for the Scalar 24 and two tape drives per bus is recommended for the Scalar 100.

Each SCSI bus auto-negotiates the appropriate sync rates with connected drives. If slower single-ended (SE) drives are mixed with faster low voltage differential (LVD) drives, the bus communicates at the rate of the slowest drive, thus wasting the performance capabilities of the faster drives. Connect slower SE drives to one SCSI port and connect faster LVD drives to the other port.

Cables and drives must be chosen to maximize performance and minimize the electrical noise from the high-speed data transfers available with the SCSI protocol. Cabling and termination methods become important considerations for proper performance. SCSI cables and drives are subject to specific length and number limitations to deal with electrical problems that arise at increased operating speeds.

SNC 450x User’s Guide 11

Use high-quality cables rated for the type of SCSI transfers required. Well-insulated SCSI cables significantly reduce the occurrence of errors in communications. Try to keep cable lengths as short as possible to ensure higher signal quality and performance.

Cabling the SNC 4501 to the Scalar 24

1 Turn off the library and SNC, if they are on.

CAUTION

2 Check the type of cable, cable length limit and number of devices recommended for each port. For

general guidelines, refer to Connecting the SCSI Ports

3 Connect sb0 on the SNC to drive 1.

4 Terminate drive 1.

See Figure 3 drives, proceed to Step 5

5 Connect sb1 on the SNC to drive 2.

6 Terminate drive 2.

See Figure 3

Figure 3 Scalar 24 with Two LTO-1/LTO-2 or SDLT Drives

. Stop here if you have only one LTO-1 or SDLT drive. If you have two LTO-1 or SDLT

Use a maximum cable length of 6m (20 ft) for LVD devices.

Cabling the SNC 4500 to the Scalar 100: Four or Six LTO-1 or SDLT Drives

1 Turn off the library and SNC, if they are on.

Use a maximum cable length of 6m (20 ft) for LVD devices.

CAUTION

2 Check the type of cable, cable length limit and number of devices recommended for each port. For

general guidelines, refer to Connecting the SCSI Ports

3 Connect sb0 on SNC 1 to the library controller.

4 Connect the library controller to drive 3.

12 Getting Started

5 Use a jumper cable to connect drive 3 to drive 4.

6 Terminate drive 4.

7 Connect sb1 on SNC 1 to drive 1.

8 Use a jumper cable to connect drive 1 to drive 2.

9 Terminate drive 2.

See Figure 4

on page 14. Stop here if you have only four LTO-1 or SDLT drives. If you have six LTO-1

or SDLT drives, proceed to Step 12

10 Connect sb0 on SNC 2 to drive 5.

11 Terminate drive 5.

12 Connect sb1 on SNC 2 to drive 6.

13 Terminate drive 6.

See Figure 5

on page 15.

. See Figure 5 on page 15.

SNC 450x User’s Guide 13

Figure 4 Scalar 100 with Four LTO-1 or SDLT Drives

14 Getting Started

Figure 5 Scalar 100 with Six LTO-1 or SDLT Drives

Cabling the SNC 4500 to the Scalar 100: Four or Six LTO-2 Drives

1 Turn off the library and SNC, if they are on.

Use a maximum cable length of 6m (20 ft) for LVD devices.

CAUTION

2 Check the type of cable, cable length limit and number of devices recommended for each port. For

general guidelines, refer to Connecting the SCSI Ports

SNC 450x User’s Guide 15

3 Connect sb0 on SNC 1 to the library controller.

4 Connect the library controller to drive 1.

5 Terminate drive 1.

6 Connect sb1 on SNC 1 to drive 2.

7 Terminate drive 2.

8 Connect sb0 on SNC 2 to drive 3.

9 Terminate drive 3.

10 Connect sb1 on SNC 2 to drive 4.

11 Terminate drive 4.

See Figure 6 proceed to Step 12

on page 17. Stop here if you have only four LTO-2 drives. If you have six LTO-2 drives,

. See Figure 7 on page 18.

12 Connect sb0 on SNC 3 to drive 5.

13 Terminate drive 5.

14 Connect sb1 on SNC 3 to drive 6.

15 Terminate drive 6.

See Figure 7

on page 18.

16 Getting Started

Figure 6 Scalar 100 with Four LTO-2 Drives

SNC 450x User’s Guide 17

Figure 7 Scalar 100 with Six LTO-2 Drives

Connecting to the Serial Port

Use the serial port to log on and configure the Ethernet ports.

Note

18 Getting Started

You must have completed the previous installation steps before you configure the serial port.

1 Connect the cable supplied with your SNC to the SNC RS-232 serial port, and from there to the serial

(COM) port on a personal computer.

For the location of this port on the SNC 4500, see Figure 8

Figure 8 Serial Connector on the SNC 4500

Figure 9 Serial Connector on the SNC 4501

. For its location on the SNC 4501, see Figure

2 If you are using an SNC 4500 with a Scalar 100 and the library is off, turn on the library. After about 15

seconds, when the library has finished booting, turn on the SNC. If you are using the SNC 4501, just turn on the library.

3 Start a terminal emulation program on the personal computer, and use it to connect to the SNC.

a. For example, if you are using HyperTerminal on a computer running a Windows operating

system, type SNC450x in the New Connection dialog box. Then click OK.

b. In the Connect To dialog box, for the Connect using field select the COM port number to

which your serial cable is connected. Then click OK.

In the COM Properties dialog box select the following values:

• Bits per second: 115,200

• Data Bits: 8

• Parity: None

• Stop Bits: 1

• Flow Control: None

SNC 450x User’s Guide 19

• Terminal type: ASCII

•Echo: on

c. Click OK.

4 After you connect to the SNC, you can see the following start-up messages. These messages are only

displayed at start-up. Messages actually displayed by your SNC will differ slightly from the sample message printed below. The last line in the start-up message sequence is Ready.

Uart is Initialized

DRAM Data Line Test Passed SRAM Data Line Test Passed BBRAM Data Line Test Passed

DRAM Address Line Test Passed SRAM Address Line Test Passed BBRAM Address Line Test Passed

DRAM Pattern Test 1 Passed DRAM Pattern Test 2 Passed DRAM Pattern Test 3 Passed DRAM Pattern Test 4 Passed SRAM Pattern Test 1 Passed SRAM Pattern Test 2 Passed SRAM Pattern Test 3 Passed SRAM Pattern Test 4 Passed BBRAM Pattern Test 1 Passed BBRAM Pattern Test 2 Passed BBRAM Pattern Test 3 Passed BBRAM Pattern Test 4 Passed DRAM Swap Pattern Test1 Passed DRAM Swap Pattern Test2 Passed DRAM Swap Pattern Test3 Passed DRAM Swap Pattern Test4 Passed

***** Memory Tests Complete *****

Memory Clear Finished

EPLD Version 0 Detected DS1629_DVC_TYPE initialized

Firmware version A61Z release date Feb 4 2004, 14:06:50 Build A61Z

Power-On Self-Test Completion Status: GOOD 128 Megabytes of RAM Installed.

2 GbE Data Port(s). 2 LVD SCSI Interface Port(s).

Bridge World Wide Name = 20 00 00 10 86 50 00 1C

20 Getting Started

Bridge Serial Number = “IPB2500100136” Bridge Name = “SNC 450x”

Internal Temperature = 25 C [0 - 70] For help, type HELP. Active Configuration = ADIC Config File Feb 4 2004 14:06:50 A61Z Initialization Complete Scsi interface 0 Register R/W test Passed Scsi interface 0 Reset test Passed Scsi interface 0 FIFO test Passed Scsi interface 0 Master test Passed Scsi interface 1 Register R/W test Passed Scsi interface 1 Reset test Passed Scsi interface 1 FIFO test Passed Scsi interface 1 Master test Passed

Initializing Port DP0......................

Initializing Port DP1......................

Initializing Port MP0......................

GBE hardware Init done. Ready.

Note

5 To verify that you have connected successfully, type help after the Ready prompt and press Enter.

If a list of all available commands does not appear on the screen, review the steps in this section, check the cable, or contact service personnel until the problem is solved.

• If you wish to change the default username and password for world wide web, Telnet and FTP use, continue with the section Completing the Installation

• If you are configuring the SNC for the first time, continue with the section Connecting to the Ethernet

Management Port.

• If you were sent to this section by another procedure, return to that procedure.

• In serial port sessions, there is no prompt on the line below the word Ready. Begin typing commands in the blank line where the cursor is resting.

• No username or password is required for serial port access.

• CLI commands are case insensitive. You can type all upper or all lower case or a mixture. Upper and lower case in this guide and the Help screen are for clarification only.

Connecting to the Ethernet Management Port

The management port IP address (Ethernet port 2, also called the mp0) must be set by issuing a command from the serial port (refer to Connecting to the Serial Port

on page 18).

CAUTION

1 Using at least Cat 5e cable, connect the Ethernet ports to your network switch.

SNC 450x User’s Guide 21

• For best performance, all cabling, network interface cards (NICs), host bus adapters (HBAs), and network switches must be Gigabit Ethernet (GbE), and at least Cat 5e certified. Most standard offices use 2-pair wiring which is not compatible. GbE requires 4-pair wiring. For best performance, support for 9600 byte jumbo frames should be available for all switches and host iSCSI equipment.

• It is recommended that you configure host access through a switch.

Figure 1 on page 4 and Figure 2 on page 4 show the connectors on the SNC.

CAUTION

your network administrator.

• The recommended configuration is one where DHCP has been disabled.

• You must substitute a valid IP address for the IP address used in the example.

• Some completed configuration commands do not take effect until you have issued the saveConfiguration command. When this is the case, the Ready prompt will be followed by an asterisk. You can issue the saveConfiguration command after each such configuration command or wait until the end of the configuration session before saving.

2 Work from the computer attached to the SNC serial port. After the SNC Ready prompt is returned,

change the IP address of the management port by issuing the set IPAddress mp0 command. The default IP address for the management port is “10.0.0.3.” The example below uses a hypothetical IP address from the user’s internal network.

Ready. set IPAddress mp0 172.17.76.3

Press Enter.

Ready.*

• Obtain appropriate IP addresses, gateways and subnet masks from

CAUTION

the example.

3 After the SNC Ready prompt is returned, issue the set IPSubnetMask mp0 command. The default

subnet mask is “255.255.0.0.”

Ready. set IPSubnetMask mp0 255.255.255.0

Press Enter.

Ready.*

You must substitute a valid gateway for the gateway used in the

You must substitute a valid subnet mask for the subnet mask used in

CAUTION

example.

4 After the SNC Ready prompt is returned, issue the set IPGateway mp0 command. There is no default

gateway.

Ready. set IPGateway mp0 172.17.76.0

Press Enter.

Ready.*

22 Getting Started

Completing the Installation

To complete the installation, continue with the configuration steps. Refer to Configuring the SNC on page

25.

Note

• You must have completed the previous procedures in this chapter before you complete the installation.

• Other special configurations may be required, for example when setting up an iSNSServer or iSCSIChapSecrets. If so, consult your service representative.

SNC 450x User’s Guide 23

24 Getting Started

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