HP 6100 HP 4x00/6x00/8x00 Enterprise Virtual Array User Guide (5697-0733, Marc - Page 67
Failback preference setting for HSV controllers
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Failback preference setting for HSV controllers Table 25 (page 67) describes the failback preference behavior for the controllers. Table 25 Failback preference behavior Setting No preference Point in time At initial presentation On dual boot or controller resynch On controller failover On controller failback Path A - Failover Only At initial presentation On dual boot or controller resynch On controller failover On controller failback Path B - Failover Only At initial presentation On dual boot or controller resynch On controller failover On controller failback Path A Failover/Failback At initial presentation On dual boot or controller resynch On controller failover On controller failback Behavior The units are alternately brought online to Controller A or to Controller B. If cache data for a LUN exists on a particular controller, the unit will be brought online there. Otherwise, the units are alternately brought online to Controller A or to Controller B. All LUNs are brought online to the surviving controller. All LUNs remain on the surviving controller. 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 particular controller, the unit will be brought online there. Otherwise, the units are brought online to Controller A. All LUNs are brought online to the surviving controller. All LUNs remain on the surviving controller. 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 particular controller, the unit will be brought online there. Otherwise, the units are brought online to Controller B. All LUNs are brought online to the surviving controller. All LUNs remain on the surviving controller. 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 particular controller, the unit will be brought online there. Otherwise, the units are brought online to Controller A. All LUNs are brought online to the surviving controller. All LUNs remain on the surviving controller. After controller restoration, the units that are 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. Failback preference setting for HSV controllers 67