HP StorageWorks XP Remote Web Console Software - Manual (Page 56)

56 TrueCopy for the XP128/XP1024/XP10000/XP12000
• SANtinel - S/390. SANtinel operations do not affect TC390 operations. Secure volumes can be
assigned to TC390 pairs, and TC390 volumes can be assigned to secure ports and/or groups for
SANtinel operations.
NOTE: TC390 R-VOLs cannot be accessed by any host except when the pair is split.
• HXRC. The XP128/XP1024/XP10000/XP12000 is functionally compatible with the IBM Extended
Remote Copy (XRC) function. See Table 13 on page 57.
• SI390. SI390 volumes can be assigned to TC390 pairs and TC390 volumes can be assigned to SI390
pairs. For information on TC390 and SI390 shared volume configurations, see ” Combining TrueCopy
with Other Data Management Operations ” on page 56. This configuration requires at least one
external ESCON or fibre cable loop.
NOTE: When TC390 and SI390 are both active on the same
XP128/XP1024/XP10000/XP12000, TC390 cannot be used to copy within that disk array. SI390
is recommended for disk array-internal copy. If SI390 is not active, TC390 Synchronous supports
intra-disk array copy and requires at least one external ESCON cable loop.
• Prioritized Port Control. The initiator ports in the MCU do not support the Prioritized Port/WWN
Control option because they are dedicated for TC390 operations.
NOTE: When TC390 and CA coexist in the same XP128/XP1024/XP10000/XP12000, each
consistency group must contain either TC390A pairs or CA Asynchronous pairs (not both), and
TC390A and CA Asynchronous share the same cache sidefile area.
Combining TC390 and HXRC. The following table shows the requirements and restrictions for combining
TC390 and HXRC operations on the same XP128/XP1024/XP10000/XP12000 device.
Combining TrueCopy and ShadowImage
TC390 and SI390 can be used together in the same disk array and on the same volumes to provide
multiple copies of data at the main and/or remote sites. The following table describes the host pair status
reporting for TC390 volumes, SI390 volumes, and TC390/SI390 shared volumes. Table 15 on page 58
shows the currency of the data on a shared TC390/SI390 volume based on TC390 and SI390 pair status.
• For shared TC390/SI390 volumes, the TC390 pair status is reported to the host if you query the R-VOL.
To obtain the SI390 pair status, query the target volume (T-VOL) of the pair.
• SI390 supports multiple target volumes (T-VOLs) for each source volume (S-VOL). If you issue a pair
status query to an SI390 S-VOL (for example, CQUERY), 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
Table 13 Requirements and restrictions for combining TrueCopy and HXRC
Combination
allowed?
TC390
M-VOL
TC390
R-VOL
HXRC
Primary
HXRC
Secondary
TC390 M-VOL -- No Yes for TC390 Sync
No for TC390 Async Yes
TC390 R-VOL No -- No No
HXRC Primary Yes for TC390 Sync
No for TC390 Async No -- Yes 1
1. An XP128/XP1024/XP10000/XP12000 volume that is an HXRC secondary device cannot also be an HXRC primary in
the same XRC session, but it can be an HXRC primary device in another XRC session.
HXRC Secondary Yes No Yes 1 --