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Adding an Affinity
StorNext User’s Guide 364
4 Locate the stripe group section and select the stripe group to which
you want to add the affinity.
Following is part of a stripe group configuration with an affinity
definition:
[StripeGroup StripeGroup2]
Status UP
Affinity aff1
Read Enabled
Write Enabled
StripeBreadth 16
Node disk2 0
StripeGroup StripeGroup3]
Status UP
Affinity aff2
Read Enabled
Write Enabled
StripeBreadth 16
Node disk3 0
Node disk4 1
Node disk5 2
If you create a directory association with Affinity aff1, all data written
to that directory is written to StripeGroup StripeGroup2, and
therefore only to Disk disk2. If you make an association with Affinity
aff2 and a separate directory in the file system, all data is directed to
StripeGroup StripeGroup3, which contains three disks: disk3, disk4,
and disk5. All data is written to these disks when directed to the
associated directory with Affinity aff2.
5 Add the affinity to the selected stripe group with a line entry in this
format:
Affinity <affinity_name>
where <affinity_name> is the name of the affinity. (Affinity names
cannot be longer than eight characters.)
Following is an example of a stripe group configuration after an
affinity was added. The affinity line is the flag for the Data1 stripe
group.
[StripeGroup Data1]
Status UP
Read Enabled
Write Enabled