96 Sun StorageTek 2500 Series Array Hardware Installation Guide • March 2007
Turning Off the DC Power During an Emergency
Caution – 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 Cautions
Use 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.