Failback Preference Setting For Hsv Controllers; Failback Preference Behavior - HP StorageWorks 6400/8400 - Enterprise Virtual Array User Manual

Failback preference setting for HSV controllers

Table 12 describes the failback preference behavior for the controllers.
Table 12 Failback preference behavior
Setting
No preference
Path A - Failover Only
Path B - Failover Only
Path A - Failover/Fail-
back
Point in time
At initial presentation
On dual boot or controller resynch
On controller failover
On controller failback
At initial presentation
On dual boot or controller resynch
On controller failover
On controller failback
At initial presentation
On dual boot or controller resynch
On controller failover
On controller failback
At initial presentation
HP StorageWorks 6400/8400 Enterprise Virtual Array user guide
Behavior
The units are alternately brought online to
Controller A or to Controller B.
If cache data for a LUN exists on a partic-
ular controller, the unit will be brought
online there. Otherwise, the units are al-
ternately brought online to Controller A or
to Controller B.
All LUNs are brought online to the surviv-
ing controller.
All LUNs remain on the surviving control-
ler. There is no failback except if a host
moves the LUN using SCSI commands.
The units are brought online to Controller
A.
If cache data for a LUN exists on a partic-
ular controller, the unit will be brought
online there. Otherwise, the units are
brought online to Controller A.
All LUNs are brought online to the surviv-
ing controller.
All LUNs remain on the surviving control-
ler. There is no failback except if a host
moves the LUN using SCSI commands.
The units are brought online to Controller
B.
If cache data for a LUN exists on a partic-
ular controller, the unit will be brought
online there. Otherwise, the units are
brought online to Controller B.
All LUNs are brought online to the surviv-
ing controller.
All LUNs remain on the surviving control-
ler. There is no failback except if a host
moves the LUN using SCSI commands.
The units are brought online to Controller
A.
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