96 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007
Turning Off the DC Power During an EmergencyCaution – Potential loss of data – An emergency shutdown of the storage array
might not allow the server to complete its I/O to the storage array.
Note – Before turning off the power switches on a DC-powered tray you must
disconnect the two-pole 20-amp circuit breaker.
Relocation CautionsUse the following guidelines when relocating trays or drives from one storage array
to another.
Caution – Potential data loss – Moving a array or array components that are
configured as part of a volume group can resultin data loss. To prevent data loss,
always consult a Customer Support representative before relocating configured
drives, controller trays or expansion trays.
Note – Traysin arrays can be connected to the DC power supply (–48 VDC). Before
turning off any power switches on a DC-poweredtray, you must disconnect the two-
pole 20-amp circuit breaker.
Do not move controller trays or expansion trays that are part of a volume group
configuration. If you must move array components, contact a Customer Support
representative for procedures.A Customer Support representative might direct you
to complete several tasks prior to undertaking the relocation. These tasks might
include:
■Creating, saving, and printing an array profileof each storage array that is
affected by the relocation of a drive or tray.
■Performing a complete backup of all data on the drives that you intend to move.
■Verifyingthat the volume group and each of its associated volumes on the
affected array have an Optimal status.
■Determining the location and status of any global hot spares associated with the
affected storage array.