Hitachi AMS2100 User Manual page 148

Table A-1: General Specifications (Continued)
Concurrent use with
ShadowImage
SnapShot use with expanded
volumes
Concurrent use with TrueCopy
and TCE
Concurrent use of Dynamic
Provisioning
Concurrent use with LUN
Manager
Concurrent use with Password
Protection
Concurrent use of Volume
Migration
Concurrent use of SNMP Agent
Support Function
Concurrent use of Cache
Residency Manager
Concurrent use of Cache
Partition Manager
Concurrent use of SNMP Agent Yes. Traps are sent when a failure occurrs.Pair status
Concurrent use of Data
Retention Utility
Concurrent use of Power
Saving
Potential effect caused by a P-
VOL failure
Potential effect caused by
installation of the SnapShot
function
A–4
Hitachi AMS 2000 Family Copy-on-Write SnapShot User Guide
Item
SnapShot and ShadowImage can be used at the same
time on the same array, but when the firmware of the
array is less than 08B0/A, SnapShot volumes cannot
be paired with ShadowImage volumes. If SnapShot is
used concurrently with ShadowImage, CTGs limited to
256.
Yes.
TrueCopy can be cascaded with SnapShot. TCE can be
cascaded with a SnapShot P-VOL. See
SnapShot with TrueCopy Extended Distance on page
2-30
Yes. See
page
Yes.
Yes.
Yes, however a Volume Migration P-VOL, S-VOL, and
Reserved LU cannot be specified as a SnapShot P-VOL.
Yes. When pair status is changed to Failure or
Threshold Over, a trap is reported.
Yes, however the LU specified for Cache Residency (LU
cache residence) cannot be used as a P-VOL, V-VOL, or
data pool.
Yes. Cache partition information is initialized when
SnapShot is installed. Data pool LU segment size must
be the default size (16 kB) or less. See
Using SnapShot with Cache Partition
changes to Threshold over or Failure.
Yes, but note following:
• When S-VOL Disable is set for an LU, the LU
cannot be used in a SnapShot pair.
• When S-VOL Disable is set for an LU that is
already a V-VOL, no suppression of the pair takes
place, unless the pair status is split.
• When S-VOL Disable is set for a P-VOL,
restoration of the P-VOL is suppressed.
Yes. However, when a P-VOL is included in a RAID
group in which Power Saving is enabled, the only
SnapShot pair operation that can be performed are the
pair split and the pair release.
The V-VOL relies on P-VOL data, therefore a P-VOL
failure results in a V-VOL failure also.
When the firmware version of the array is less than
0897/A, reboot is required to acquire data pool
resources.
Specifications
Specification
for more information.
Concurrent use of Dynamic Provisioning on
2-18.
Cascading
Appendix D,
Manager.