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SAS 712 U Series User Manual
How to check deduplication size limit?
1.
Go to Summary/Overview tab, dedup usage number will be shown here.
2.
Check deduplication ratio. Dedup ratio is displayed along with pool information. It
represents the overall amount of deduplicated data from all file systems and volumes in
the same pool.
Dedup Ratio = (Data size before dedup) / (Data size after dedup)
From the screenshot in step 1 above, 7564MB (7GB) is the data size after dedup.
With a dedup ratio of 3, it means there are about 3 copies of identical data. Data size
without dedup will take up 22692MB (22GB).
Enterprise features – Compression
Compression algorithm adopts LZJB.
Applied to both file system and volume.
Compression can be turned ON and OFF on the fly during I/O.
How to use compression with shares?
1.
For example, create a file system of 20MB with compression turned ON.
