Dell FC4500 Reference Guide - Page 57

Replacing or Adding a Disk Module, Do not move a disk module that is part of an existing LUN

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Servicing and Upgrading a DPE 3 Replacing or Adding a Disk Module ! CAUTION When replacing or adding a disk module, observe the following: • Remove or install disk modules only while the storage system is powered up. • Do not move a disk module that is part of an existing LUN to another slot in the storage system. If you do, you risk destroying the storage system beyond recovery, or data loss at the very least. Each disk module has LUN-identifying information assigned to it when it is bound. Moving it to another slot can make the information stored on the disk module from the original LUN inaccessible. If you must move a disk module to another slot, unbind the LUN first; unbinding destroys all data on the LUN. • 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. A disk module being inserted or removed may be damaged by a partially removed adjacent module. • 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. The part number (PN005xxxxxx) appears on the top or bottom of the module. A replacement disk module should have the same format (52- byte-per-sector format is required for arrays) and the same capacity (size and speed) as the disk it is replacing. An add-on can be any capacity but must be the 520-byte-per-sector format. LUNs should be created using disk modules of equal size and speed. • When removing or installing multiple disk modules, wait for the activity lights on all other disk modules to resume a steady flicker before removing or installing the next disk module. The activity lights show that the Core Software has rediscovered the FC loop. If you want to use a previously used disk module as a spare, contact your service provider for assistance. Replacing or Adding a Disk Module 3-9

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3
Replacing or Adding a Disk Module
3-9
Servicing and Upgrading a DPE
Replacing or Adding a Disk Module
CAUTION
!
When replacing or adding a disk module, observe the following:
•
Remove or install disk modules only while the storage system
is powered up.
•
Do not move a disk module that is part of an existing LUN to
another slot in the storage system. If you do, you risk
destroying the storage system beyond recovery, or data loss at
the very least. Each disk module has LUN-identifying
information assigned to it when it is bound. Moving it to
another slot can make the information stored on the disk
module from the original LUN inaccessible. If you must move a
disk module to another slot, unbind the LUN first; unbinding
destroys all data on the LUN.
•
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. A disk
module being inserted or removed may be damaged by a
partially removed adjacent module.
•
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. The part number (PN005xxxxxx) appears on the top or
bottom of the module. A replacement disk module should have
the same format (52- byte-per-sector format is required for
arrays) and the same capacity (size and speed) as the disk it is
replacing. An add-on can be any capacity but must be the
520-byte-per-sector format. LUNs should be created using disk
modules of equal size and speed.
•
When removing or installing multiple disk modules, wait for
the activity lights on all other disk modules to resume a steady
flicker before removing or installing the next disk module. The
activity lights show that the Core Software has rediscovered the
FC loop.
If you want to use a
previously used
disk module as a spare, contact your
service provider for assistance.