Dell 20xS Computer Hardware User Manual


 
Dell PowerVault 20xS Storage Systems Enclosure Services Expander Module Installation 1-1



This document provides instructions for configuring, installing, and servicing the
enclosure services expander module on a Dell PowerVault 20
x
S storage system.
The PowerVault 20xS storage system upgrade kit for cluster operation contains two
enclosure services expander modules. Other kits may contain one or two enclosure
services expander modules.
The enclosure services expander module (with a small computer system interface
[SCSI] bus expander chip) replaces the enclosure services module (without a SCSI
bus expander chip). The enclosure services expander module is labeled “ES Expander
Module;” the label is located adjacent to the SCSI connector.

The enclosure services expander module for the PowerVault 20
x
S storage system
provides the following features:
Uses the technology provided by the Ultra2 multimode SCSI bus expander chip
Provides SCSI cable support for longer cables (up to 20 meters)
Supports cluster operation
Supports the PowerVault 20
x
S storage system feature set