HP StorageWorks XP Remote Web Console Software - Manual (Page 137)

TrueCopy for z/OS user guide 137
5. If necessary, use ICKDSF REFORMAT to change the labels (VOLSERs) of the R-VOLs.
6. Verify that all required file recovery procedures have been completed before varying the R-VOLs online.
If an IPL of the remote host system is not required, bring the R-VOLs online. If an IPL is required:
a. Clear the remote copy SIMs from the RCUs before OS IPL. Connect to each RCU and click Clear
SIM in the Other Operations window (see ” Other Operations ” on page 107). Please note that only
an HP CE or ASE should remove SIMs.
b. Perform IPL of the remote host system.
c. Wait until the IPL is complete, and then vary the R-VOLs online (if they did not come online
automatically).
7. At this point you may start critical applications at the remote site with the previous R-VOLs taking the
place of their M-VOLs.
Analyzing the Currency of TrueCopy Synchronous R-VOLs
The following table shows how to determine the currency of a TC390 Synchronous R-VOL based on its pair
status and M-VOL fence level setting. For TC390 Synchronous pairs with an M-VOL fence level setting of
Never, further analysis will be required to determine the currency of these R-VOLs. The currency of these
R-VOLs can be determined by using the sense information transferred through ERC or by comparing the
contents of the R-VOL with other files that are confirmed to be current (for example, DB2 log files). These
R-VOLs should be recovered using the files that are confirmed to be current.
Analyzing the Consistency of TrueCopy Asynchronous R-VOLs
The following table shows how to determine the consistency of a TC390A R-VOL based on its pair status
and consistency status. For TC390A R-VOLs with a consistency status of Volume, the volume is not
consistent with other volumes in the same group and further analysis will be required to determine the
currency of each of these R-VOLs. To determine the currency of these R-VOLs, use the sense information
Table 23 Analyzing the currency of TrueCopy Synchronous R-VOLs
Status of R-VOL Fence
Level
Currency of R-VOL
Simplex Data
Status
Never
Inconsistent. This R-VOL does not belong to a TC390 volume pair.
Even if you established a TC390 pair for this volume, you must regard this
volume as inconsistent.
Pending Duplex Data
Status
Never
Inconsistent. This R-VOL is not synchronized because not all cylinders have
been copied from the M-VOL yet. This R-VOL must be initialized (or copied
from the M-VOL at a later time).
Duplex Data
Status
Current. This R-VOL is synchronized with its M-VOL.
Never Needs to be analyzed. This R-VOL requires further analysis to determine its
level of currency.
Suspended -
initial copy failed
Data
Status
Never
Inconsistent. This R-VOL is not synchronized because not all cylinders have
been copied from the M-VOL yet. This R-VOL must be initialized (or copied
from the M-VOL at a later time).
Suspended -
R-VOL by operator
Data
Status
Never
Suspect. This R-VOL is not synchronized with its M-VOL if any write I/Os
were issued to the M-VOL after the pair was suspended. This pair should be
restarted using the Entire initial copy option, but the No Copy option can be
used if you are sure no data on the M-VOL changed.
Suspended -
all other types
Data Current. This R-VOL is synchronized with its M-VOL.
Status
Never
Suspect. This R-VOL is not synchronized with its M-VOL if any write I/Os
were issued to the M-VOL after the pair was suspended. Restore the
consistency of this R-VOL and update it, if required. The system time stamp
information transferred through ERC or the time of suspension indicated on
the Pair Status window will help to determine the last time this R-VOL was
updated.