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Hitachi Simple Modular Storage Copy-on-Write SnapShot User’s Guide
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write order guarantee
Ensures that data is updated in an S-VOL, in the same order that it is
updated in the P-VOL, particularly when there are multiple write
operations in one update cycle. This feature is critical to maintain data
consistency in the remote S-VOL and is implemented by inserting
sequence numbers in each update record. Update records are then
sorted in the cache within the remote system, to assure write
sequencing.
write workload
The amount of data written to a volume over a specified period of time.