Combining shadowimage and truecopy operations, Combining shadowimage and, Truecopy operations – HP XP Business Copy Software User Manual
Page 39
ShadowImage for z/OS user guide
39
•
Virtual LVI/LUN. Virtual LVI/LUN volumes can be assigned to SI390 pairs provided that the T-VOL has
the same capacity as the S-VOL. If you need to perform Virtual LVI/LUN operations on an existing
SI390 S-VOL or T-VOL, you must delete the pair first to return the volume to simplex status.
•
Cache LUN XP. Cache LUN XP volumes can be assigned to SI390 pairs, and Cache LUN XP operations
can be performed on existing SI390 S-VOLs and T-VOLs.
CAUTION:
For important information on performing quick restore operations on Cache LUN XP
volumes, see ”
Resynchronize Pair Operations (Normal, Quick, Reverse, Quick Restore)
•
TCz. TCz volumes can be assigned to SIz pairs and SIz volumes can be assigned to TCz pairs. For
important information on SI390 and TC390 shared volume configurations, refer to ”
ShadowImage and TrueCopy Operations
NOTE:
SI390 is recommended for intra-disk array copy operations. If SI390 is not installed,
TC390 (synchronous only) can be used to copy within the same
XP1024/XP128/XP12000/XP10000/SVS 200. This TC390 configuration requires at least one
external Fibre Channel interface cable loop (minimum of two is recommended).
•
HP Auto LUN XP. SI390 volumes can be assigned to migration volumes of HP Auto LUN XP. However, if
the SI390 S-VOL is already paired with three T-VOLs, you must delete the SI390 pairs before migrating
the volumes by using Auto LUN XP. Also, if you want to assign SI390 volumes to destination volumes of
migration by using Auto LUN XP, or reserve SI390 volumes for Auto LUN XP, you must delete the SI390
volumes or unreserve SI390 volumes before using the volumes. If you assign an SI390 S-VOL that is
already paired with three T-VOLs to migration volumes of Auto LUN XP or assign SI390 volumes to
other Auto LUN XP volumes than migration volumes, the command will be rejected.
Also, if you split the SI390 pair that is assigned to Auto LUN XP migration volumes, migration of those
volumes will be canceled.
NOTE:
You cannot use migration volumes, destination volumes, and reserved volumes of Auto LUN
XP for SI390 pair operations because the command will be rejected. If you want to use Auto LUN
XP volumes for SI390 pair operations, you must release the volumes by using Auto LUN XP.
•
SANtinel - S/390. SANtinel operations do not directly affect SI390 operations. Secure LDEVs can be
assigned to SI390 pairs, and SI390 volumes can be secured. A secure LDEV will accept SI390 initial
and update copy operations. When an S-VOL is secured by SANtinel, this setting does not apply to the
corresponding T-VOLs. SANtinel T-VOLs cannot be accessed by any host except when the pair is split.
Combining ShadowImage and TrueCopy Operations
SI390 and TC390 can function together in the same XP1024/XP128/XP12000/XP10000/SVS 200 to
provide both internal and remote backup for your important data.
•
When SI390 and TC390 pairs share the same volume, to obtain the SI390 pair status, query from the
host:
• The T-VOL status of the SI390 pair if the SI390 S-VOL and TC390 M-VOL share the same volume.
• The T-VOL status of the SI390 pair if the SI390 S-VOL and TC390 R-VOL share the same volume.
• The S-VOL status of the SI390 pair if the SI390 T-VOL and TC390 M-VOL share the same volume.
•
SI390 supports multiple T-VOLs for each S-VOL. If you issue a pair status query to an SI390 S-VOL, the
status for only one SI390 pair is reported (the pair with the T-VOL with the lowest LDEV ID). To obtain
the pair status for the SI390 pair(s) with the other T-VOL(s), you must direct the host query to the specific
T-VOL using the T-VOL’s LDEV ID in the host command. The SI390 remote console software displays the
LDEV ID and SI390 pair status of all T-VOLs associated with an S-VOL.
•
Reverse resync and quick restore operations can be performed on shared SI390/TC390 pairs only
when the TC390 pair is suspended.