HP XP RAID Manager Software User Manual

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HP StorageWorks Disk Array XP RAID Manager: User’s Guide

SVOL-SSUS-takeover in the case of ESCON/FC link and host

failure

An SVOL-Takeover executes an SVOL-SSUS-takeover so that S-VOL
writing is enabled without going to SMPL state. An SVOL-SSUS-takeover
changes the secondary volume to suspend (PAIR, PSUE

→

SSUS) state,

which permits WRITE and delta data maintenance (BITMAP) for all
secondary volumes of the group.

Terms:

PAIR*

Equivalent to PAIR for sync-CA.

Equivalent to PAIR

→

PSUE for async-CA.

SSUS

Equivalent to SVOL_PSUS.

Group status after a SVOL-SSUS-takeover

After an SVOL-SSUS-takeover completes:

• The S-VOL status is displayed as SSUS by the pairdisplay command.

• The pairvolchk command returns the S-VOL status as SVOL_PSUS.

Also, this special state is displayed as SSWS by using the –fc option of the
pairdisplay

command. This special state (PVOL_PSUE and

Host C

Host A

Host B

PAIR

PSUE

PAIR
PAIR
PAIR

SSUS
SSUS
SSUS
SSUS
SSUS

horctakeover

P-VOL

ESCON & Host failer