Defining A Sequential Access File Storage Pool - IBM E16RMLL-I - Tivoli Storage Manager Implementation Manual

DISKDATA
NONE
TAPEDATA
Note that the estimated capacity and utilization figures are zero at this point, as
we have not assigned any volumes or stored any data as yet.

6.3.3 Defining a sequential access file storage pool

Define a primary tape storage pool using the define stgpool command with your
defined device class (LTO2-DC). Some of the options you should consider are:
MAXSCRatch: number of scratch volumes that the storage pool can use
before it reports that it is full. For sequential file storage pools, set
MAXSCRatch to a large number (for example, 1,000,000) to avoid the server
stopping when the storage pool is full. Sequential file storage pools create
and delete volumes as required. However, when a volume is created, the
number of scratch volumes used is incremented.
COLlocate: specifies whether the server tries to keep data from a client,
group of clients, or client file spaces on as few tapes as possible (known as
collocation
restore operations, but will increase the number of volumes required to store
client data.
Example 6-11 shows the definition of two sequential access storage pools.
Example 6-11 Defining sequential file storage pools
tsm: ATLANTIC>
pool" collocate=node maxscratch=1000000
ANR2200I Storage pool DISKFILE defined (device class SEQF-DC).
tsm: ATLANTIC>d
pool for directory metadata" collocate=node maxscratch=1000000
ANR2200I Storage pool DISKDIRS defined (device class DIRM-DC).
tsm: ATLANTIC>
Storage
Pool Name
---------- ---------- --------- ---- ----- ---- ---
DISKDATA
DISKDIRS
234
IBM Tivoli Storage Manager Implementation Guide
DISK 0.0 M
DISK 0.0 M
LTO2-DC 0.0 M
). Collocation reduces the number of volumes required to perform
define stgpool DISKFILE seqf-dc description="Sequential file storage
efine stgpool DISKDIRS dirm-dc description="Sequential file storage
q stgp
Device Estimated
Class Name Capacity Util
DISK 0.0 M
DIRM-DC 0.0 M
0.0 0.0 80 30
0.0 0.0 90 70
0.0 0.0 90 70
Pct Pct High Low
Migr Mig Mig
Pct Pct
0.0 0.0 80 30
0.0 0.0 90 70
TAPEDATA
Next Storage
Pool
-----------
TAPEDATA