From "help q stg":
Pct Util
An estimate of the utilization of the storage pool, as a
percentage.
For sequential access devices, this is expressed as a percentage of
the
number of active bytes on each sequential access volume and the
estimated capacity of all volumes in the storage pool.
For disk devices, this is expressed as a percentage of the
estimated
capacity, including cached data and data that resides on any
volumes
that are varied offline. The value for Pct Util can be higher than
the
value for Pct Migr if you issue this command while a file creation
transaction is in progress. The value for Pct Util is determined by
the
amount of space actually allocated (while the transaction is in
progress). The value for Pct Migr represents only the space
occupied by
committed files. At the end of the transaction, these values become
synchronized.
The Pct Util value includes cached data on disk volumes. Therefore,
when cache is enabled and migration occurs, the Pct Util value
remains
the same because the migrated data remains on the volume as cached
data. The Pct Util value decreases only when the cached data
expires or
when the space that cached files occupy needs to be used for
noncached
files.
So for DASD-NAS you used have ~62.496GB including cached data
Pct Migr (primary storage pools only)
An estimate of the percentage of data in the storage pool that can
be
migrated. The server uses this value and the high and low migration
thresholds to determine when to start and stop migration.
For disk devices, this value is specified as a percentage of the
value
for the estimated capacity, excluding cached data, but including
data
on any volumes varied offline.
For sequential access devices, this value is the percentage of the
total number of volumes in the pool that contain at least 1 byte of
active data. The total number of volumes includes the maximum
number of
scratch volumes.
The Pct Util value includes cached data on a volume; the Pct Migr
value
excludes cached data. Therefore, when cache is enabled and
migration
occurs, the Pct Migr value decreases but the Pct Util value remains
the
same because the migrated data remains on the volume as cached
data.
The Pct Util value decreases only when the cached data expires or
when
the space that cached files occupy needs to be used for noncached
files.
I'm guessing you have cache enabled, so looking at the "q stg" report
below,
I appears that all of the data in DASD-NAS has been migrated to 3494NAS,
so
all ~62.496GB of the data in DASD-NAS is in a "cached" state.
Doe this help?
H. Milton Johnson
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of
Hashim, Shukrie BSP-ISM/116
Sent: Monday, October 04, 2004 10:39 PM
To: [EMAIL PROTECTED]
Subject: query stgp
Hi all,
I have Version 5, Release 1, Level 9.4 can somebody explain to me
Storage Device Estimated Pct Pct High Low
Next
Pool Name Class Name Capacity Util Migr Mig Mig
Storage
(MB) Pct Pct
Pool
----------- ---------- ---------- ----- ----- ---- ---
-----------
DASD-NAS DISK 63 G 99.2 0.0 0 0
3494NAS
DASDFS DISK 18 G 0.0 0.0 60 0
3494FS
DASDHSM DISK 19 G 13.9 0.2 50 30
3494HSM
pct util : is this the cache or the actual disk
pct migr : is this the actual disk or the percentage migrated to tapes
for example DASD-NAS has a pct util of 99.2 so meaning .. it means that
it's full but I dunno what is full either the disk is full or the cache
is full ? somebody please explain to me the meaning of the table ...
above
Thanks
Regards
Shukrie
