HP XP Continuous Access Software - Manual (Page 346)

346 HP StorageWorks Disk Array XP RAID Manager: User’s Guide
Takeover-switch function
The takeover command, when activated manually or by a control script,
checks the attributes of volumes on the local and remote disk array to
determine the proper takeover action. The table below shows the takeover
actions.
Local node (Takeover) Remote node Takeover action
Volume attribute Fence and status
Volume
attribute P-VOL status
SMPL
—
SMPL — NG
P-VOL — Nop-Takeover**
S-VOL — Volumes unconformable
Unknown — NG
P-VOL
(primary)
Fence == Data or
status
and
Status == PSUE or
PDUB
SMPL — NG
P-VOL — Volumes unconformable
S-VOL — PVOL-Takeover*
Unknown Status
For example:
LAN down
— PVOL-Takeover*
*required to allow local writes
Others SMPL — NG
P-VOL — Volumes unconformable
S-VOL — Nop-Takeover**
Unknown Status
For example:
LAN down
— Nop-Takeover**
**no action needed to allow
local writes
(continued)