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v Take additional care when you handle devices during cold weather. Heating
Working with hot-swap hard disk drives
Before you remove a hard disk drive, review the following information:
Hot-swap hardware
Hard disk drives
Hard disk drive LEDs
Replacing a hot-swap hard disk drive
Hard disk drive problems include any malfunctions that delay, interrupt, or prevent
successful I/O activity between the hosts and the hard disk drives in the EXP2500.
This includes transmission problems between the host controllers, the ESMs, and
the drives. This section explains how to replace a failed drive.
Check the hardware and software documentation that comes with your server to
determine whether there are restrictions regarding hard disk drive configurations.
Some system configurations might not allow mixing different hard disk drive
capacities or types within an array.
To replace a hot-swap hard disk drive, complete the following steps:
1. Read the instructions that come with the hard disk drive.
2. Read the safety information that begins on page iii and "Installation guidelines"
30
System Storage EXP2512 and EXP2524: Installation and Maintenance Guide
reduces indoor humidity and increases static electricity.
You can replace a failed hard disk drive without turning off the EXP2500.
Therefore, you can continue to operate the EXP2500 while a hard disk
drive is removed or installed. These drives are known as hot-swap drives.
The EXP2500 supports IBM SAS or nearline SAS hard disk drives. Each
drive comes preinstalled in a drive tray, ready for installation in the
EXP2500. (Do not detach the drive from the tray.) You can install the drives
directly into the 12 drive bays on the front of the EXP2500. Before you
remove any drives, record the location information for each drive in Table 2
on page 2.
Attention:
If you remove a drive, you must reinstall it in the same bay. If
you reinstall a hard disk drive in the wrong bay, you might lose data.
Each hard disk drive has two LEDs that indicate the status of the drive. The
drive LED states and descriptions are shown in the following table.
LED
Activity (green)
Status (amber)
Status (amber)
on page 29.
LED state
Flashing
Flashing
Lit
Description
Flashes during read/write
or inquiry operations to the
hard disk drive
Flashes to indicate that the
hard disk drive is being
rebuilt or that the hard disk
drive has been identified
by the RAID controller
management software
Is lit continuously to
indicate a drive failure
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