HP StorageWorks XP Remote Web Console Software - Manual (Page 103)

Table 25 Changes of URz Pair Status by Delta Resync Operation (When Business Tasks
are Transferred from TCz Secondary Site to the Primary Site)
URz Pair Pair Status before Delta
Resync Operation
Pair Status after Delta Resync Operation
Primary Da
Volume
ta Secondar
Volume
y D Primary Data Volum ata eSecondary Data Volume
URz pair between TCz
Synchronous primary site a
URz secondary site
nd
Hold Hold Duplex or Pending Duplex Duplex or Pending Duplex
URz pair between TCz
Synchronous secondary site
and URz secondary site
Duplex or
Suspend
Duplex or
Suspend
Hold Hold
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, please see Table 26 on page 103, check the pair status
and then perform a problem-solving operation before transferring business tasks back to the primary site.
Table 26 Pair Status and Operation after Recovery of the Primary Site
No. If the Status of
the Pair in the
Primary Site is
and the Status
of the Pair in the
URz Secondary
Site is
Please Perform the Following Operation before
Transferring Business Tasks Back to the Primary Site
1 Pending Duplex Hold 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.
2 Duplex Hold Perform the operation explained in the row No. 1 of this
table.
3 Suspend Hold 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 .96
4 Hold Hold The pair is in normal condition. You can transfer business
tasks as described earlier in this section.
5 Hlde Hold Change the status of the Hlde pair back to
Hold. For information about how to do this, see
“ Restoring a Pair of Data Volumes ” on page 165.
6 Simplex Hold 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 .96
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