IBM E16RMLL-I - Tivoli Storage Manager, Руководство по внедрению

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IBM Tivoli Storage Manager Implementation Guide
DISKDATA DISK 0.0 M 0.0 0.0 80 30 TAPEDATA
NONE DISK 0.0 M 0.0 0.0 90 70
TAPEDATA LTO2-DC 0.0 M 0.0 0.0 90 70
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
). Collocation reduces the number of volumes required to perform
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>
define stgpool DISKFILE seqf-dc description="Sequential file storage
pool" collocate=node maxscratch=1000000
ANR2200I Storage pool DISKFILE defined (device class SEQF-DC).
tsm: ATLANTIC>d
efine stgpool DISKDIRS dirm-dc description="Sequential file storage
pool for directory metadata" collocate=node maxscratch=1000000
ANR2200I Storage pool DISKDIRS defined (device class DIRM-DC).
tsm: ATLANTIC>
q stgp
Storage Device Estimated Pct Pct High Low Next Storage
Pool Name Class Name Capacity Util Migr Mig Mig Pool
Pct Pct
---------- ---------- --------- ---- ----- ---- --- -----------
DISKDATA DISK 0.0 M 0.0 0.0 80 30 TAPEDATA
DISKDIRS DIRM-DC 0.0 M 0.0 0.0 90 70