NetApp Deduplication for FAS and V-Series Deployment and Implementation Guide
1. Create a flexible volume (keeping in mind the maximum allowable volume size for the platform, as
specified in the requirements table at the beginning of this section).
r200-rtp01*> vol create VolArchive aggr0 200g
Creation of volume 'VolArchive' with size 200g on containing aggregate
'aggr0' has completed.
2. Enable deduplication on the flexible volume and verify that it’s turned on. The vol status command
shows the attributes for flexible volumes that have deduplication turned on.
After you turn deduplication on, Data ONTAP lets you know that if this were an existing flexible volume
that already contained data before deduplication was enabled, you would want to run sis start –s.
In this example it’s a brand-new flexible volume, so that’s not necessary.
r200-rtp01> sis on /vol/VolArchive
Deduplication for "/vol/VolArchive" is enabled.
Already existing data could be processed by running "sis start -s
/vol/VolArchive.”
r200-rtp01> vol status VolArchive
Volume State Status Options
VolArchive online raid_dp, flex nosnap=on
sis
Containing aggregate: 'aggr0'
3. Another way to verify that deduplication is enabled on the flexible volume is to check the output from
running sis status on the flexible volume.
r200-rtp01> sis status /vol/VolArchive
Path State Status Progress
/vol/VolArchive Enabled Idle Idle for 00:00:20
4. Turn off the default deduplication schedule.
r200-rtp01> sis config /vol/VolArchive
Path Schedule
/vol/VolArchive sun-sat@0
r200-rtp01> sis config -s - /vol/VolArchive
r200-rtp01> sis config /vol/VolArchive
Path Schedule
/vol/VolArchive -
5. NFS-mount the flexible volume to /testArchives on a Solaris
™
host called sunv240-rtp01, and
copy lots of files from the users’ directories into the new archive directory flexible volume. Here is the
result from the host perspective:
root@sunv240-rtp01 # pwd
/testPSTs
root@sunv240-rtp01 # df -k.
Filesystem kbytes used avail capacity Mounted on
r200-rtp01:/vol/VolArchive 167772160 33388384 134383776 20%
/testArchives
6. Next, examine the flexible volume, run deduplication, and monitor the status. Use the df –s command
to examine the storage consumed and the space saved. Note that no space savings have been
achieved by simply copying data to the flexible volume, even though deduplication is turned on. What
has happened is that all the blocks that have been written to this flexible volume since deduplication
was turned on have had their fingerprints written to the change log file.
r200-rtp01> df -s /vol/VolArchive
Filesystem used saved %saved
/vol/VolArchive/ 33388384 0 0%
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