HP XP P9500 Storage - Manual (Page 92)

4 Performing Compatible FlashCopy SE operations
This chapter provides information about performing operations with Compatible FlashCopy SE.
Overview of FlashCopy SE
FlashCopy SE (FCSE) can reduce the physical volume size of the T-VOL by using a virtual volume
that is a track space-efficient volume (TSE-VOL) as the FlashCopy T-VOL.
Before you can use FCSE, both Compatible FlashCopy SE and Thin Provisioning Z must be installed.
You can perform FCSE operations by using one of the following commands from the host:
•
PPRC TSO
•
DFMSdss
•
ICKDSF
•
ANTRQST Macro
•
z/VM CP
The following table shows functions that are supported by Compatible FlashCopy SE:
Table 52 Supported Functions
Description Function Category
Copies S-VOL updates to the T-VOL. This function does not
perform a background copy. If a relationship with no copy
is deleted, the data of copy target is not guaranteed. Volume copy Establishing relationships
Can establish up to 16 copy targets. Multiple relationships
Creates snapshot data consistent across multiple volumes. Consistency group FlashCopy
Creates a relationship, reverses S-VOL and T-VOL. Fast reverse restore
Deletes the relationship between the specified S-VOL and
T-VOL. Because the NOCOPY option is used with FCSE, Releasing relationships
the relationship is deleted immediately after the Withdraw
command is issued. When you execute the Withdraw
command, you can select whether or not to release already
allocated areas.
Displays the status of the relation by using a host command
or Remote Web Console. Displaying relationship status
Best practice for using Compatible FlashCopy SE
As best practice, use Compatible FlashCopy SE when saving data temporarily for short-term backup
or when executing backup for tapes or for other media.
Before using the TSE-VOL, the volume must be initialized .
Compatible FlashCopy SE operates only in NOCOPY mode. The consistency of the T-VOL (TSE-VOL)
data cannot be ensured if you release the relationship before an operation that is copying the
T-VOL completes. Operations that access the T-VOL after the relationship is released are not
supported. Do not execute the TSE-VOL operation after releasing the Compatible FlashCopy SE
relationship.
Requirements for using Compatible FlashCopy SE
You can establish a Compatible FlashCopy relationship for simplex volumes.
The following table describes other requirements for using Compatible FlashCopy SE:
92 Performing Compatible FlashCopy SE operations