Compex Systems Advanced SerialRAID Adapters SA33-3285-02 User Manual
Page 170
synchronized to the array before you run the copy operation. The recommended
procedure for copying logical volumes is to use the ssa_make_copy command, rather
than SMIT or ssaraid commands. The ssa_delete_copy command is provided to
enable you to delete the copy after it has been backed up.
You can, for example, use the ssa_make_copy and ssa_delete_copy commands for
nightly backups when an automated closed circle of operations is required to:
1. Prepare disk drives to copy the volume group that is held on a RAID-1 or RAID-10
array.
2. Uncouple the copy of the array.
3. Recreate the copy of the volume group.
4. Do either of the following:
v
Remove the copy volume group, delete the copy array, and repeat from step 1.
v
Remove the copy volume group, recouple the copy array to the parent volume
group to allow the copy disk drives to be reused for another copy, and repeat
from step 2. (Recoupling the copy disk drives to the parent starts a new copy
process.)
The terms “couple” and “uncouple”, which are used in this section, have specific
meanings:
couple To attach a copy disk drive to a RAID-1 array, or to attach an array of copy
disk drives to a RAID-10 array so that data is copied from the RAID-1 or
RAID-10 array to the copy array. The metadata of the copy array is updated to
indicate that it is part of the parent RAID-1 or RAID-10 array. The metadata of
the parent array is updated to show that the copy array is to be used as a
copy. The copy array is taken offline and is no longer directly accessible.
uncouple
To separate the copy array from the parent RAID-1 or RAID-10 array. The
metadata of the copy array is updated to indicate that it is no longer part of the
parent RAID-1 or RAID-10 array. The metadata of the parent array is updated
to show that it is no longer associated with the copy array. The copy array is
brought online and appears as a free resource.
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User’s Guide and Maintenance Information
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