HP 3PAR X9000 File Serving Software (IBRIX) Implementation Guide (QL226-96987, June 2013)

Using Data Tiering
The following steps must be completed to configure data tiering:
• Assign segments to tiers.
• Define the primary tier. All new files are written to this tier.
• Create the tiering policy for the file system.
This section explains how the data tiering feature works using the StoreAll OS CLI.
• Create a mounted file system, fs1, with a minimum of four segments, using the LUNs that are
exported from the HP 3PAR StoreServ Storage. See “Mounting a File System” (page 28).
• Use the following command to assign segments to a tier:
# ibrix_tier -a -f FSNAME -t TIERNAME -S SEGLIST
• Assign segments 1 and 2 to Tier1 and segments 3 and 4 to Tier2 using the following command:
# ibrix_tier -a -f fs1 -t Tier1 -S 1,2
# ibrix_tier -a -f fs1 -t Tier2 -S 3,4
• Using the following command, set the allocation policy to STICKY for one of the segments in
the file system so that the new files created will move to the sticky segment:
# ibrix_fs_tune -f FSNAME {-h HOSTLIST |-g GROUPLIST} -p POLICY [-S STARTS EGNUM]
[ - R]
For example, to set the sticky policy for segment s1 of file system fs1, issue the following
command:
# ibrix_fs_tune -f fs1 -p STICKY -S 1 -h eo s172s1.vpi.hp.com,eo s172s2.vpi.hp.com
• Create some files on the preferred segment of the mounted file system.
• To create a tiering policy for the file system, use the following command:
# ibrix_migrator -A -f FSNAME -r RULE -S SOURCE_TIER -D DESTINATION_TIER
For example, to create a tiering policy for filesystem fs1, issue the following command:
# ibrix_migrator -A -f fs1 -r 'name = "*.txt" ' -S Tier1 -D Tier2
• To start a migration task, use the following command:
# ibrix_migrator -s -f FSNAME
• To start the migration task on file system fs1, use the following command, so that files move
from Tier1 to Tier2 according to the rule set:
# ibrix_migrator –s –f fs1
HP StoreAll OS Software Usage 39