HSG80 ACS Solution Software V8.6 for IBM AIM Installation and Configuration Guide

Table Of Contents
Exploitation of the CLONE and SNAPSHOT Functions of the HSG80 in an AIX Environment C5
3. If the copy is to be a SNAPSHOT, skip to Step 5. Otherwise follow the CLONE
procedure described in Chapter 8. Repeat the procedure for each target drive. As
mentioned previously, the hdisks associated with the storage system drives and
targeted for CLONE copy can remain available and logical volumes mounted and
accessible in AIX. When the CLONE is complete, go to Step 6.
4. For SNAPSHOT, the HSG80 controller must be loaded with S type firmware before
this function can be invoked. Using a terminal attached to the HSG80 controller serial
interface, select and initialize disk devices in the storage system having the same
capacity as the target unit drives determined in Step 3. Create a one-disk mirror
container for each selected drive. Add the drives as SNAPSHOT units using the
following CLI command construct:
ADD SNAPSHOT <New Unit Number> <Mirror Container Name> <Target Disk Unit>
5. Ensure connection access to the new drive. For SNAPSHOT, connection access to the
new disk unit is disabled and must be enabled; for CLONE, the new disk unit
connection access is set to ALL. Depending on the storage system configuration with
the host or hosts, it may be necessary to tailor host access to the new drive in the
storage unit. Refer to the section, Restricting Host Access, in Chapter 1 for setting
drive/host access. For new SNAPSHOT drives, if there are no host access restrictions
then issue the following command for each new drive:
SET <New Drive Unit> ENABLE_ACCESS=ALL
Once the access connection has been appropriately set, the new drive should be
available for AIX use.
6. Run cfgmgr on the AIX system after which a new set of hdisks equal to the number of
target hdisks should become available.
7. The new hdisks can be verified as copies of the originals by examining the respective
hdisk physical volume IDs (PVID). To do this, issue the lspv AIX command which is
shown in the following example:
# lspv
hdisk0 000518660c11216frootvg
hdisk1 003b5075af8b1c4edatavg
hdisk2 003b50756c0fc93edatavg
hdisk3 003b5075af8b1c4edatavg
hdisk4 003b50756c0fc93edatavg
hdisk3 and hdisk4 are the copied drives created by the storage system disk copy
procedure (CLONE or SNAPSHOT) that also became available after invoking AIX
cfgmgr. The PVID of both drives match those respectively in hdisk1 and hdisk2.