IBM EXP400 Type 1733, Hardware Maintenance Manual And Troubleshooting Manual

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v
While the device is still in its static-protective package, touch it to an unpainted
metal part of the expansion unit for at least 2 seconds. This drains static
electricity from the package and from your body.
v Remove the device from its package and install it directly into the expansion unit
without setting down the device. If it is necessary to set down the device, put it
back into its static-protective package. Do not place the device on your
expansion unit enclosure or on a metal surface.
v Take additional care when handling devices during cold weather. Heating reduces
indoor humidity and increases static electricity.
Working with hot-swap hard disk drives
This section explains how you can increase the expansion unit capacity by adding
more drives or replacing existing drives with larger capacity drives.
Before you remove drive CRUs, review the following information:
Hot-swap hardware
You can replace a failed hard disk drive without turning off the expansion
unit. Therefore, you can continue to operate your system while a hard disk
drive is removed or installed. These drives are known as hot-swap drives.
Hard disk drives
Your expansion unit supports IBM Ultra320 SCSI hard disk drives. These
IBM drives come pre-installed in a drive tray, ready for installation. (Do not
detach the drive from the tray.) This drive and tray assembly is called a
customer replaceable unit (CRU) . You can install the drives directly into the
14 drive bays on the front of the expansion unit. Be sure to record the
location information for each drive before you remove it. Ensure that you
keep track of the drives and their corresponding bays. Also, record the
location information in the Installed-device records section of the Installation
Guide .
Attention: If you reinstall a hard disk drive in the wrong bay, you can
lose data.
Hard disk drive LEDs
Each hard disk drive bezel has two LEDs that indicate the status for that
particular hard disk drive. The drive LED states and descriptions are as
follows:
LED LED state Description
Activity LED Green/flashing Flashes during read/write or
inquiry operations to the hard
disk drive.
Status LED Amber/flashing Flashes to indicate a hard
disk drive rebuild is under
way or that a hard disk drive
has been identified by the
system-management
software.
Status LED Amber On Lit continuously to indicate a
drive failure.
Filler panels
Expansion units come with drive filler panels in the drive bays. Before
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IBM EXP400 Storage Expansion Unit Type 1733: Hardware Maintenance Manual and Troubleshooting Guide