HP XP P9500 Storage - Manual (Page 32)

Table 14 Volume types that can be shared with Continuous Access Synchronous (continued)
Used as S-VOL? Used as P-VOL? Volume type
No No S-VOL in PAIR status
No Yes S-VOL in PSUS (Delete pair to RCU) status
No Yes S-VOL in SSWS status
No Yes S-VOL in PSUE (pair suspended-error) status
Data Retention
Yes Yes Volume with Read/Write attribute
Yes Yes Volume with Read Only attribute
Yes Yes Volume with Protect attribute
No Yes Volume that is disabled for use as an S-VOL
Data Exchange
No No Volume usable by both mainframe and open systems
Cache Residency
Yes Yes Cache Residency applied Volume.
Virtual LUN
Yes Yes Virtual LUN volume
LUN Manager
Yes Yes Volume to which a path is defined
No No Volume to which no path is defined
Yes Yes Volume to which LUN security is applied
Thin Provisioning
Yes Yes 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
32 Sharing Continuous Access Synchronous volumes