as a conduit) to a target storage unit to establish a FlashCopy relationship at the
target site. This eliminates the need for a network connection to the target site
solely for the management of FlashCopy.
Limitation: Remote FlashCopy commands are used to establish a FlashCopy
relationship at the target (remote) site when a connection to target site is lost. The
Remote FlashCopy operation is not supported through the DS Storage Manager
because connections to both the source and target sites are required. If the
connection to the target site is lost, the DS Storage Manager cannot connect to the
target site.
The following example illustrates the required steps for a Remote FlashCopy
operation. You can perform all steps from the DS CLI. If you used the DS Storage
Manager for Steps 1 and 2, you must perform Step 3 from the DS CLI.
1. Create paths between the source LSS and the target LSS. For example,
IBM.2107-1600661/00 and IBM.2107-1306875/00
2. Create Metro Mirror volume pairs from the source LSS to the target LSS
for example, volume A (IBM.2107-1300861/0001) from LSSA and volume B
(IBM.2107-1300871/0001) from LSSB.
3. Enable a Remote FlashCopy operation at the target site using volume B as
the source volume and volume C as the target volume Assume that the
target site connection is lost. You can create the FlashCopy relationship from
volume B to volume C (both from the target site). However, you cannot use the
DS Storage Manager for this step because connections to the target site are
lost.
Assume that you performed Step 1 and Step 2 from the DS Storage Manager
(connections to both storage units at the source and target sites were available)
and the Metro Mirror relationship between the volume pair still exists. To create the
Remote FlashCopy operation, you must perform Step 3 from the DS CLI using the
following command as an example:
dscli>mkremoteflash -dev IBM.2107-75FA120 -conduit IBM.2107-75FA150/10
0100:0200
where:
dev Specifies the storage image ID, which includes manufacturer, type, and
serial number.
conduit LSS_ID
(Required) Identifies the source LSS of an existing remote mirror and copy
relationship that is used as a conduit for communicating with the target
storage image . The source volume IDs that are specified in
source_volume_ID:target_volume_ID must be the target volumes in a
remote mirror and copy relationship in which one of the conduit LSS
volumes acts as a source volume. You can specify a fully qualified LSS ID,
which includes the storage image ID.
source_volume_ID:target_volume_ID
(Required) Establishes a remote FlashCopy relationship for the source and
target volume pairs with the specified IDs. You can specify fully qualified
volume IDs, which includes storage image IDs, or a shortened version
without storage image IDs if the -dev parameter is specified. Separate the
IDs of the FlashCopy relationships with spaces.
Chapter 8. Optional feature codes for the DS8000 115
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
To Next Page
Loading...
Need help?
General