HP StoreAll Storage - Manual (Page 272)

1 ibrix01b ilv1 OK 4,096 3,811.11 . . .
2 ibrix01a ilv2 OK 4,096 3,035.67
3 ibrix01b ilv3 OK 4,096 3,811.11
4 ibrix01a ilv4 OK 4,096 3,035.67
.
.
Use the following command to assign segments to a tier. The tier is created if it does not already
exist.
ibrix_tier -a -f FSNAME -t TIERNAME -S SEGLIST
For example, the following command creates Tier 1 and assigns segments 1 and 2 to it:
[root@ibrix01a ~]# ibrix_tier -a -f ifs1 -t Tier1 -S 1,2
Assigned segment: 1 (ilv1) to tier Tier1
Assigned segment: 2 (ilv2) to tier Tier1
Command succeeded!
NOTE: Be sure to spell the name of the tier correctly when you add segments to an existing tier.
If you spell the name incorrectly, a new tier is created with the incorrect tier name, and no error
is recognized.
Displaying information about tiers
Use the following command to list the tiers in a file system. The -t option displays information for
a specific tier.
ibrix_tier -l -f FSNAME [-t TIERNAME]
For example:
[root@ibrix01a ~]# ibrix_tier -i -f ifs1
Tier: Tier1
===========
FS Name Segment Number Tier
------- -------------- ----
ifs1 1 Tier1
ifs1 2 Tier1
Tier: Tier2
===========
FS Name Segment Number Tier
------- -------------- ----
ifs1 3 Tier2
ifs1 4 Tier2
Defining the primary tier
All new files are written to the primary tier, which is typically the tier built on the fastest storage.
Use the following command to define the primary tier:
ibrix_fs_tune -f FILESYSTEM -h SERVERS -t TIERNAME
The following example specifies Tier1 as the primary tier:
ibrix_fs_tune -f ifs1 -h ibrix1a,ibrix1b -t Tier1
This policy takes precedence over any other file allocation polices defined for the file system.
NOTE: This example assumes users access the files over CIFS, NFS, FTP, or HTTP. If StoreAll
clients are used, the allocation policy must be applied to the clients. (Use -h to specify the clients.)
Creating a tiering policy
To create a rule for migrating data from a source tier to a destination tier, use the following
command:
ibrix_migrator -A -f FSNAME -r RULE -S SOURCE_TIER -D DESTINATION_TIER
272 Using data tiering