HP StorageWorks XP Remote Web Console Software - Manual (Page 89)

Table 23 Changes of URz Pair Status by Delta Resync Operation (When Business Tasks are
Transferred from TCz Secondary Site to the Primary Site)
Pair Status after Delta Resync
Operation Pair Status before Delta Resync
Operation
URz Pair
Secondary Data
Volume
Primary Data
Volume
Secondary Data
Volume
Primary Data
Volume
Duplex or
Pending Duplex Duplex or
Pending Duplex Hold Hold URz pair between TCz
Synchronous primary
site and URz
secondary site
Hold Hold Duplex or
Suspend Duplex or
Suspend URz pair between TCz
Synchronous
secondary site and
URz secondary site
Caution on transferring business tasks back to the primary site when using delta resync:
After you remove failures from the primary site and other locations and then the system is changed
to 3DC multi-target configuration, the status of a pair between the primary site and the URz
secondary site may be abnormal. If the status of the pair remains abnormal, you will be unable to
transfer your business tasks back to the primary site. To solve this problem, see
Table 24 (page
89) , check the pair status and then perform a problem-solving operation before transferring business
tasks back to the primary site.
Table 24 Pair Status and Operation after Recovery of the Primary Site
Perform the Following Operation before Transferring Business
Tasks Back to the Primary Site
And the Status of
the Pair in the URz
Secondary Site is
If the Status of
the Pair in the
Primary Site is
No.
Make sure that the status of the pair in the primary site is
Suspend, and then perform the operation explained in the
row No. 3 of this table. Hold Pending
Duplex 1
Perform the operation explained in the row No. 1 of this table. Hold Duplex 2
Step 1: Release the URz pair from the primary site.
Step 2: Make sure that all the pairs belonging to the journal
group in the primary site are released.
Step 3: Create a URz delta resync pair that extends from the
primary site to the URz secondary site. For information about
requirements for creating the pair, see
“Requirements for
Creating URz Pair for Delta Resync Operation” (page 81) .
Hold Suspend 3
The pair is in normal condition. You can transfer business
tasks as described earlier in this section. Hold Hold 4
Change the status of the Hlde pair back to Hold. For
information about how to do this, see
Restoring a Pair of Data
Volumes .
Hold Hlde 5
Step 1: Release the pair in Hold status from the URz secondary
site.
Step 2: Create a URz delta resync pair that extends from the
primary site to the URz secondary site. For information about
requirements for creating the pair, see
“Requirements for
Creating URz Pair for Delta Resync Operation” (page 81)
Hold Simplex 6
Combining URz with Other Data Management Operations 89