Replacing Hot-Swap Drives - IBM totalstorage 326 User Reference

Replacing hot-swap drives

Drive problems include any malfunctions that delay, interrupt, or prevent successful
I/O activity between the hosts and the hard disk drives. This section explains how to
replace a failed drive.
Attention:
replacing a drive that is part of a RAID level 1 or RAID level 5 logical drive, ensure
that you install the replacement drive in the correct bay.
Use the following procedure to replace host-swap drives:
1. Check the hardware and software documentation that is provided with the
2. Check the storage-management software for recovery procedures for a drive
3. Determine the location of the drive to remove.
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Model 326 User's Reference
Table 21. Storage controller troubleshooting (continued)
Problem indicator Component
Intermittent or sporadic Some or all
power loss to the CRUs
storage controller
Unable to access Drives and Fibre
drives Channel loop
Random errors Subsystem
Failure to replace the drives might result in loss of data. If you are
system to see if there are restrictions regarding hard-disk-drive configurations.
Some system Fibre Channel configurations might not allow mixing different drive
capacities or types within an array.
that has failed. Follow the steps in the software procedure before continuing
with this procedure.
Attention: Never hot-swap a drive CRU when its green Activity LED is
flashing. Hot-swap a drive CRU only when its amber drive-fault LED is on and
not flashing, or when the drive is inactive with the green Activity LED on and not
flashing.
Possible cause Possible solutions
Defective AC power 1. Check the AC power
source or partially
plugged-in power 2. Reseat all installed
cord
3. If applicable, check
4. Replace defective
Power supply has Check for a Fault LED
failed on the power supply, and
replace the failed CRU.
Midplane has failed Have the midplane
replaced (service
technician only).
Fibre Channel Ensure that the Fibre
cabling has failed. Channel cables are
undamaged and properly
connected.
RAID controller has Replace the RAID
failed controller.
GBIC has failed 1. Ensure GBIC is
2. Replace GBIC.
Midplane has failed Have the midplane
replaced (service
technician only).
source.
power cables and
power supplies.
the power
components.
power cords.
seated properly.