| Tape states |
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Procedures |
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NEW.
Tapes delivered from the manufacturer. These are traditionally devoid of
label, either physical or electronic. The physical label is applied
by CNS operations, and the electronic label is applied by TSM on first
introduction of the tape, in
FIXME: phase 0a
of tape processing.
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Phase 0a.
Physical label is applied to a tape, and the tape is inserted into the
library. LABEL LIBVOLUME is run, and the tape is checked into the
logical library on the library manager instance.
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SCRATCH.
SCRATCH Tapes have been inserted into the physical library, checked into the logical
library of the library manager instance. These tapes are available to
be requested by a process or session. The library manager instance
doles these tapes out to client instances as needed. All scratch
tapes for the entirety of the TSM infrastructure are maintained in
this unified scratch pool.
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Phase 1.
The tape is required for storage. A TSM server makes a request, and
the tape is mounted and written to. No operator or administrator
intervention is required.
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MOUNTABLE.
MOUNTABLE tapes have been written to, and which are still present in the
physical library. Many tapes in MOUNTABLE state are primary or
local-copy. Only some of them, those in designated copy pools, are
candidates for offsite treatment. These candidates will be ejected
from the library according to schedules maintained in the various
instances.
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Phase 2.
A copy-pool tape has been written to, and has been deemed ready for
storage. MOVE DRMEDIA occurs automatically, and the tape is ejected
from the library. Notification goes out to operations staff, who take
the tape from the library I/O station, and store it in the outgoing rack.
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NOTMOUNTABLE.
NOTMOUNTABLE tapes have been written to, and which have been ejected from the
physical library. They are presumed still to be onsite. At CNS,
these tapes should be present either in the I/O drawer of the library,
or in the 'OSG OUTGOING' rack.
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Phase 3.
At the next courier visit, the tape is handed over and transported.
We do not separately record the transition from courier custody to
vault placement, so we deem the tapes 'in the vault' as soon as they
are handed over to the courier. The transition to VAULT is directed
manually by operations staff for each volume.
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VAULT.
Tapes which have been handed over to the courier for storage. These
tapes require an interaction with the storage service to reclaim.
They may be still en route, or they may have arrived at the storage facility.
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Phase 4.
Eventually a tape is deemed empty. In the case of copy storage pool
volumes, this happens when the volume has been reclaimed and the reuse
delay has completed. In the case of database backup volumes, this
happens when the database backup has been deleted from the volume
history. At that point the TSM server in question changes its status
to VAULTRETRIEVE. No operator or administrator intervention is required.
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VAULTRETRIEVE.
Tapes which are resident at the storage facility, and have been deemed
ready for retrieval. At the next interaction, these tapes should be
requested from the courier service. These tapes are administratively
'blank'.
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Phase 5.
When the courier returns the tape, operations staff notes this by
means of MOVE DRMEDIA to onsiteretrieve for each volume returned.
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ONSITERETRIEVE.
Tapes which have been retrieved from the courier service. They are
'blank' and are ready to place on the shelf.
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Phase 6.
Tapes which achieve ONSITERETRIEVE state are automatically removed
from both the volume records and the library scratch pools. These
tapes are placed on the 'EMPTY' shelf, ready to be checked in again at
next need.
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SHELF.
Tapes with physical and electronic labels, present on a shelf in the
machine room. These may have been kicked out of the library for space
reasons, or they might have
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Phase 0b.
Tapes on the shelf are inserted into the physical library and checked
in to the logical library as the level of scratch tapes falls below
predetermined levels [which are documented elsewhere].
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Phase 0c.
If space in the library is at a premium, tapes in the SCRATCH state
can simply be checked out of the library, and placed on the shelf.
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