HP XP256 Guia do Utilizador descarregar pdf (Página 39)

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Service Information

Pinned track. A “pinned track” occurs when a disk drive failure

temporarily prevents data from being destaged from

cache to disk. The next time the data on the pinned

track is accessed by the host, the data is destaged to

another disk location. The RAID technology and

dynamic spare disk drives of the disk array ensure full

recovery from disk drive failures and non-stop access

to user data.

Data can remain pinned in cache if it is not accessed

by the host following the pinned track condition.

Maintenance activities (for example, microcode

updates) require that all pinned tracks be cleared.

If an HP service representative encounters pinned

tracks during these activities, user assistance can be

required to access the data (for example, run DSF

Inspect, read and write specific data) to cause it to be

destaged to disk.

Emergency: fire, earthquake, flood, etc. Pull the emergency power-off (EPO) switch. Refer to

the process outlined in “Emergency Power-Off” (page

31). Call the HP support center to have the EPO

switch reset.

ALARM LED is on. If there is an ambient temperature problem in the area

(see “Specifications”, page 51), lower the room

temperature and call your HP support representative.

If the area temperature is not the obvious cause of the

alarm, call the HP support center for assistance.

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HP XP256 Guia do Utilizador Página 39