HP 4100 Enterprise Virtual Array Manual do Utilizador Página 62

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Failback preference setting for HSV controllers
Table 25 (page 62) describes the failback preference behavior for the controllers.
Table 25 Failback preference behavior
BehaviorPoint in timeSetting
The units are alternately brought online to
Controller A or to Controller B.
At initial presentationNo preference
If cache data for a LUN exists on a particular
controller, the unit will be brought online there.
On dual boot or controller resynch
Otherwise, the units are alternately brought
online to Controller A or to Controller B.
All LUNs are brought online to the surviving
controller.
On controller failover
All LUNs remain on the surviving controller.
There is no failback except if a host moves the
LUN using SCSI commands.
On controller failback
The units are brought online to Controller A.At initial presentationPath A - Failover Only
If cache data for a LUN exists on a particular
controller, the unit will be brought online there.
On dual boot or controller resynch
Otherwise, the units are brought online to
Controller A.
All LUNs are brought online to the surviving
controller.
On controller failover
All LUNs remain on the surviving controller.
There is no failback except if a host moves the
LUN using SCSI commands.
On controller failback
The units are brought online to Controller B.At initial presentationPath B - Failover Only
If cache data for a LUN exists on a particular
controller, the unit will be brought online there.
On dual boot or controller resynch
Otherwise, the units are brought online to
Controller B.
All LUNs are brought online to the surviving
controller.
On controller failover
All LUNs remain on the surviving controller.
There is no failback except if a host moves the
LUN using SCSI commands.
On controller failback
The units are brought online to Controller A.At initial presentationPath A -
Failover/Failback
If cache data for a LUN exists on a particular
controller, the unit will be brought online there.
On dual boot or controller resynch
Otherwise, the units are brought online to
Controller A.
All LUNs are brought online to the surviving
controller.
On controller failover
All LUNs remain on the surviving controller.
After controller restoration, the units that are
On controller failback
online to Controller B and set to Path A are
brought online to Controller A. This is a one
time occurrence. If the host then moves the LUN
using SCSI commands, the LUN will remain
where moved.
The units are brought online to Controller B.At initial presentationPath B -
Failover/Failback
62 Enterprise Virtual Array operation
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