Configuration Of Ds8000 Remote Copy For Sra; Setting Up Preconfigured Environments For Ds8000 Remote Copy For Sra - IBM DS8000 User Manual

Note: If preconfigured/non-preconfigured are switched by the configuration
utility, rescan SRA in SRM on both the protected (primary) and the recovery
(secondary) site.
DS8000 Command Timeout (sec)
The DS8000 Command Timeout specifies the maximum time, in seconds, to wait
for a required state of volume, command results, FlashCopy, or remote copy. The
wait is after certain DS8000 commands run, or to wait for command results. For
example:
v SRA waits for the volume initialization to be completed before it establishes a
v After a Metro Mirror copy relationship is resumed, SRA waits for the secondary
v During a reprotect process of Global Mirror, SRA waits for the first pass
v When ESSNI functional code does not accept the command due to being busy,
If the time that SRA waited exceeds the configured maximum timeout setting, SRA
fails due to a timeout exception. If the value is empty or 0, SRA waits until the
required state is met or the command result is returned. The user can keep the box
empty as the default value.
For more configuration fields, see "Configuration of DS8000 Remote Copy for
SRA."

Configuration of DS8000 Remote Copy for SRA

Along with the regular remote copy configuration on DS8000, some special
configuration is required for the SRA defined mode.
Setting up preconfigured environments for DS8000 Remote
Copy for SRA
In the Pre-Configured mode, SRA does not create a volume or FlashCopy. SRA also
does not attach or detach the volume to or from the host.
Before you begin
To complete these tasks you must use the storage system GUI or tools that are part
of the storage system.
Procedure
1. Create an equal number of FlashCopy (target) volumes on both the protected
2. Complete this step according to the scenario:
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IBM DS8000 Storage Replication Adapter
FlashCopy relationship.
full duplex state.
completion of the remote copy that is established by SRA.
SRA waits and resubmits the command.
(primary) and the recovery (secondary) site DS8000.
v For a Metro Mirror scenario, create the following items:
a. A background copy and the incremental FlashCopy maps (with the
volumes that were created in step 1 as the FlashCopy target volume).
b. The Metro Mirror copy source and target volumes, as the FlashCopy
source volumes.