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Chapter 1. Introduction
The IBM TotalStorage FAStT900 Fibre Channel Storage Server (referred to
throughout this book as the FAStT900 Storage Server) is a high-performance unit
that provides dual, redundant array of independent disks (RAID) controllers and
Fibre Channel interfaces to both the host and drive channels.
FAStT900 Storage Server overview
The FAStT900 Storage Server (Machine type 1742, models 90U and 90X) supports
direct attachment of up to four hosts that contain two host adapters each, and is
designed to provide maximum host-side and drive-side redundancy. By using
external Fibre Channel switches in conjunction with the FAStT900 Storage Server,
you can attach up to 64 hosts with two adapters each to a FAStT900 Storage
Server.
Each FAStT900 Storage Server contains several removable components, called
customer replaceable units (CRUs), that you can access from either the front or
back of the unit. These CRUs include the battery, RAID controllers, storage server
fan, power supplies, fan and communications module, mini hubs, and Small
Form-Factor Pluggable (SFP) modules. The FAStT900 Storage Server also has a
removable front bezel.
The FAStT900 Storage Server functions with at least one external Fibre Channel
drive expansion unit containing Fibre Channel hard drives. The FAStT900 Storage
Server supports a maximum of 224 Fibre Channel hard drives when using an IBM
FAStT EXP700 drive. If the Fibre Channel drives are configured in FAStT EXP500
drive expansion units, a maximum of 220 hard drives are supported.
Attention:
FAStT500 controller units. The FAStT900 controller units are keyed to prevent them
from being mistakenly inserted in the non-supported storage server units. Do not
force fit the controller units or the backplane might be damaged.
Front view
Figure 2 on page 2 shows the bezel. The bezel is a removable front cover with
holes for viewing the status lights and for boosting air circulation.
Note: The illustrations in this document might differ slightly from your hardware.
© Copyright IBM Corp. 2001, 2003
The FAStT900 controller units are not compatible with the FAStT700 or
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