Hp XP Continuous Access Software Manual de usuario descargar pdf (Pagina 36)

For information about the delta resync operation that is performed when a failure occurs in the

conﬁguration shown in Figure 7,seeSwitching Continuous Access XP's master journal group.The

contingency Continuous Access XP Journal pair must be in HOLD status when the failure occurs in order

to perform a delta resync operation. However, the contingency Continuous Access XP Journal pair status

can be changed to HLDE, for example, when a cache memory or shared memory error occurs at the

DC2 Continuous Access XP Synchronous secondary site or when you cannot obtain a journal at the

Continuous Access XP Synchronous secondary site because the master journal volume failed or a pinned

track occurred. If the status of the contingency Continuous Access XP Journal pair for a delta resync

operation changes to HLDE due to one of the conditions described above, follow the steps in Restoring a

pair of data volumes and change the pair status back to HOLD again.

Switching C

ontinuous Access XP's master journal group

When a failu

re occurs on the DC1 primary site in Figure 7 (3DC multi-target conﬁguration), the

DC2-to-DC3 Continuous Access XP Journal pair can then use the contingency journal group in the

Continuous Access XP Synchronous secondary site as the new master journal group. To switch the master

journal group, ﬁrst change the Continuous Access XP Synchronous secondary site to a primary site using

RAID Manager XP's horctakeover command, and then perform a delta resync operation on the primary

data volume of the contingency Continuous Access XP Journal pair that was in HOLD status to activate

data ﬂow for that logical connection. Figure 8 shows an example.

Overview of Continuous Access XP Journal

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Hp XP Continuous Access Software Manual de usuario Pagina 36