HP StorageWorks XP Remote Web Console Software - Manual (Page 22)

Table 1 Siz Requirements
Parameter Specification
Pair objects
Logical devices (LDEVs): Mainframe and
multiplatform devices that are supported by storage
system, including custom-size devices of Virtual LVI.
Devices must be installed and formatted. The S-VOL
and T-VOL must be of the same type and same
size (e.g., 3390-3R to 3390-3R allowed, 3380-K
to 3390-9 not allowed). A custom-size S-VOL must
be paired with a T-VOL of the same type and same
size. A combination of mainframe and multiplatform
devices for creating a Hitachi ShadowImage pair is
supported. Open volumes (e.g., OPEN-3, OPEN-9,
OPEN-E) are not supported.
Volumes that are specified as URz journal volumes
cannot be specified as S-VOLs or T-VOLs.
NOTE:
There is no restriction on the controller emulation
type for Siz operations. The controller emulation
type for the S-VOL and T-VOL can be the same
or different (for example, 3990 S-VOL and 2105
T-VOL).
Ask your HP account team for the latest information
on supported device types.
Available volume
Siz can use the volume with control unit image:
logical device ID (CU:LDEV) between 00:00 and
3F:FF.
Number of copies
Maximum three copies (T-VOLs) per source volume
(S-VOL).
Maximum number of pairs
Maximum of 8,192 pairs (8,192 S-VOLs and 8,192
T-VOLs) can be created per storage system. The
maximum number of pairs equals the total number of
Siz, FlashCopy, XP Business Copy, XP Auto LUN, XP
Snapshot, and Flex Copy XP volume pairs.
For more information, see section “
Calculating
Maximum Number of Pairs ” on page 23.
Maximum number of T-VOLs 8,192 reserved volumes per storage system.
Combinations of RAID levels
All combinations supported: RAID1-RAID1,
RAID5-RAID5, RAID1-RAID5, RAID5-RAID1,
RAID6-RAID6, RAID1-RAID6, RAID5-RAID6,
RAID6-RAID1, RAID6-RAID5.
Dynamic sparing and auto correction copy
If a failure occurs that requires use of dynamic sparing
or automatic correction copy, the status of the paired
volumes associated with the failed physical device
is not affected.
Requirements for Maintaining Hitachi ShadowImage™ for z/OS Pairs
Table 2 on page 23 shows the requirements for maintaining Siz.
22 Overview of Hitachi ShadowImage for z/OS Operations