Grass Valley K2 Level 3 RAID Dec.09 2005 - Manual (Page 44)

44 Level 3 RAID Instruction Manual November 23, 2005
Chapter 3 Servicing the Level 3 RAID
A disk module must be inserted all the way or removed entirely. Do not leave a disk
module partially removed except for periods when you are allowing it to spin down.
When replacing multiple disks, observe the following:
• The RAID chassis configuration information is written to the first three disk
modules. If all of these disk modules are replaced with new devices with the power
supplies turned off, the information is lost. This condition is indicated by the
SERVICE LED blinking at a high rate at chassis power up. Therefore, do not
replace the first three disk modules with the power supplies turned off.
• When multiple disk modules are subject to replacement, they must be replaced
with new disk modules one by one. Do not replace multiple disk modules
simultaneously. After checking that the Ready LED on the front panel of the
current disk module is lit, commence replacing the next disk module.
• Stick on the physical label indicating the installation position on each newly
installed disk module.
CAUTION: Handle a disk module gently and use an ESD wristband.
Do not remove a faulty disk module until you have a replacement
module (with the same part number) or a filler module available.
Removing a disk module
NOTE: If a disk module has been bound into a LUN, do not move it to another slot
unless you do not care about the data on the LUN. Each module has LUN
identifying information written when it is bound. Moving it to another slot can
make information on the original LUN inaccessible.
Generally, you should not remove a disk module unless it is faulty. Refer to
“Interpreting front panel LEDs” on page 36 and “Monitoring K2 Level 3 External
RAID status using NetCentral” on page 35 .
NOTE: If you wish to remove an operational disk module, use the Grass Valley
Storage Utility to disable the disk before removing it.
To remove the disk module:
1. Confirm the location of the faulty disk module by checking its Fault LED. Also
check NetCentral messages. NetCentral messages may report disk faults by disk
module number.
2. Remove the disk module as illustrated in the following diagram.
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