IBM DS3500 User Manual

You can replace the two gigabit Ethernet switches that are shown in Figure 67 and
Figure 68 with one large gigabit Ethernet switch that has the required number of
ports. Virtual local area network (VLAN) can also be used to isolate the two iSCSI
networks, instead of a single switch.
Dual-controller iSCSI configurations:
The following illustration is an example of a multiple port, single-host
configuration. A system that uses multiple iSCSI ports can provide enhanced
performance compared to a single-port iSCSI connection.
DS3500
Host system
with two iSCSI
connectors
Host system
with two iSCSI
connectors
1 Gigabit/10 Gigabit
Ethernet switch
1 Gigabit/10 Gigabit
Ethernet switch
e35i0004
Figure 67. Multiple-host, multiple-port, single-controller, and redundant-path iSCSI
configuration
DS3500
Host system
with two iSCSI
connectors
Host system
with two iSCSI
connectors
DS3500
1 Gigabit/10 Gigabit
Ethernet switch
1 Gigabit/10 Gigabit
Ethernet switch
e35i0005
Figure 68. Multiple-host, multiple-port, multiple-storage-subsystem iSCSI configuration
Chapter 3. Cabling the storage subsystem and storage enclosure 73

IBM DS3500 Specifications

General

Storage Type	Disk Array
Form Factor	2U
Supported Drives	SAS, SATA
RAID Levels	0, 1, 5, 6, 10, 50, 60
Management Software	IBM System Storage DS Storage Manager
Operating System Support	Windows, Linux, VMware, AIX, HP-UX, Solaris
Model	IBM DS3500
Host Interfaces	SAS
Cache Memory	2 GB
Power Supply	Dual redundant, hot-swappable
Number of Controllers	2

Summary

Safety Information and Precautions

Safety Statements and Warnings

Electrical and Handling Safety

Details electrical hazards, shock prevention, safe cable handling, and battery precautions.

Chapter 1. Introduction to IBM Storage Subsystems

Chapter 2. Installing the Storage Subsystem and Storage Enclosure

Installing the DS3500 Storage Subsystem

Provides detailed instructions for installing the DS3500 storage subsystem into a rack.

Handling Static-Sensitive Devices

Offers crucial guidelines for handling static-sensitive devices to prevent damage during installation.

Preparing for Installation

Installing the EXP3500 Storage Enclosure

Provides step-by-step instructions for installing the EXP3500 storage enclosure into a rack.

Chapter 3. Cabling the Storage Subsystem and Storage Enclosure

Cabling the DS3500 Storage Subsystem

Instructions for cabling the DS3500 subsystem to hosts, drives, and external devices based on configuration.

Controller Connectors and Adapters

Working with Fiber Optic and SAS Cables

Connecting Storage Enclosures

Details how to connect EXP3512/EXP3524 enclosures to DS3512/DS3524 subsystems using SAS cables.

Connecting SAS Hosts to the DS3500

Instructions for connecting SAS hosts to the DS3500 using SAS cables, including redundant connections.

Connecting iSCSI Hosts to the DS3500

Cabling Power Supplies

Chapter 4. Operating the Storage Subsystem and Storage Enclosure

Performing Health Checks and Inspections

Powering On and Off Procedures

Troubleshooting the Storage Subsystem

Utilizes Storage Manager software to monitor, diagnose, and recover from hardware failures.

Chapter 5. Replacing Components

Controller Replacement Procedures

Steps for removing, installing, and replacing controllers, including DIMM and battery unit procedures.

Drive Replacement Procedures

Instructions for replacing hot-swap drives, multiple drives, and performing drive upgrades.

Power Supply Replacement

ESM and Midplane Replacement

Chapter 6. Solving Problems

DS3500 Storage Subsystem Troubleshooting

Guides users through diagnosing and resolving issues in the DS3500 subsystem using indicators and diagnostics.

Seven-Segment Display Sequence Codes