- IBM switch Users and Maintenance Guide

The DS4100 has blank trays in the unused drive bays. To begin installing new
drives, you must first remove the blank trays and save them. Each of the 14 bays
must always contain either a blank tray or a drive CRU. You can install up to 14
hot-swap drive CRUs in the storage server.
v Activity LED: Each drive CRU has an associated Activity LED on the DS4100
chassis. A flashing green LED indicates drive activity. A solid green LED indicates
that the drive is properly installed and powered on.
v Fault LED: Each drive CRU has an associated Fault LED on the DS4100
chassis. A solid amber LED indicates a drive failure. A flashing amber LED
indicates that a drive identify process is in progress.
v General system error LED: A solid amber LED indicates a power supply, fan
unit, or hard disk drive error. Use the DS4000 Storage Manager client to
diagnose and repair the problem. For more information, see “Checking the LEDs”
on page 71.
v Latch: Use this multipurpose latch to release or lock the drive CRU in place.
v Power-on LED: A solid green LED indicates that the storage server has dc
power.
v Tray handle: Use this multipurpose handle to insert and remove a drive CRU in
the bay.
Back view
Figure 4 on page 10 shows the components at the back of the DS4100 base
storage server.
Activity LED
Fault LED
General system
error LED
Power-on LED
LatchTray handle
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Figure 3. Front controls and indicators
Chapter 1. Introduction 9