Continuous Access Journal - HP StorageWorks P9000 User Manual

Table 10 Volume types that can be shared with Continuous Access Synchronous (continued)
Volume type
S-VOL in PAIR status
S-VOL in PSUS (Delete pair to RCU) status
S-VOL in SSWS status
S-VOL in PSUE (pair suspended-error) status
Data Retention
Volume with Read/Write attribute
Volume with Read Only attribute
Volume with Protect attribute
Volume that is disabled for use as an S-VOL
Data Exchange
Volume usable by both mainframe and open systems
Cache Residency
Cache Residency applied Volume.
Virtual LUN
Virtual LUN volume
LUN Manager
Volume to which a path is defined
Volume to which no path is defined
Volume to which LUN security is applied
Thin Provisioning
V-VOL (virtual volume of Thin Provisioning)
1
For more information on using Auto LUN, contact HP Technical Support.
2
The volume cannot be used if the corresponding Cnt Ac-J pair belongs to a JNL group with P9500 mode 707 set to
ON.
3
The volume can be used only when you resynchronize a Continuous Access Synchronous pair or perform a RAID
Manager horctakeover operation. In this case, even though the corresponding Cnt Ac-J pair belongs to a JNL group
with P9500 mode 707 set to ON, the volume can be used.
4
The volume can be used only when you resynchronize a Continuous Access Synchronous pair or perform a RAID
Manager horctakeover operation, except when the corresponding Cnt Ac-J pair belongs to a JNL group with P9500
mode 707 set to ON.
5
If the Continuous Access Synchronous S-VOL is a V-VOL, the Continuous Access Synchronous pair cannot be created.
Create the Continuous Access Synchronous pair after completing volume migration or stopping the Auto LUN operation.
The following sections clarify key information regarding shared volumes.

Continuous Access Journal

Continuous Access Synchronous and Continuous Access Journal can share the same pair volumes.
Using a combined Continuous Access Synchronous and Continuous Access Journal configuration
can extend disaster recovery options to a third data center.
Like Continuous Access Synchronous, a Continuous Access Journal pair maintains a copy of the
production volume in a second location. However, unlike Continuous Access Synchronous, the
30 Sharing Continuous Access Synchronous volumes
Used as P-VOL?
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
No
Yes
Yes
Used as S-VOL?
No
No
No
No
Yes
Yes
Yes
No
No
Yes
Yes
Yes
No
Yes
Yes