Руководство Пользователя для Spectra Logic spectra t120
Chapter 9. Best Practices for Tape Media
98
Handling Tape Media
The following are best practices for handling tape media.
1. Make sure that empty TeraPack containers reside in the EE pool. This is
particularly important when first using the library. If slots for exported media
aren’t available, then the backup software must wait for these slots. The simplest
way to avoid this delay is to make sure that you put in empty (or full) TeraPack
containers after you export media. If you import full TeraPack containers, use
your backup software to import the new media into the storage pool.
aren’t available, then the backup software must wait for these slots. The simplest
way to avoid this delay is to make sure that you put in empty (or full) TeraPack
containers after you export media. If you import full TeraPack containers, use
your backup software to import the new media into the storage pool.
2. Make the EE pool large enough to accommodate all media typically vaulted in a
single operation. For example, if you run a nightly backup that requires 48 tapes
that are exported each morning, create an EE pool of 50 slots (five chambers).
that are exported each morning, create an EE pool of 50 slots (five chambers).
3. Once your library has been in use, and at least one set of media has completed
a round trip (exported from the library, stored off-site, then re-imported), the
following rule of thumb applies: if you remove a TeraPack container from the EE
pool, replace it—either with an empty one to accommodate future eject
operations, or a full one whose tapes are then imported into the storage pool.
following rule of thumb applies: if you remove a TeraPack container from the EE
pool, replace it—either with an empty one to accommodate future eject
operations, or a full one whose tapes are then imported into the storage pool.
4. During an import or export operation, don’t leave the library unattended for
more than a few minutes. If you do, it times out so the library can continue
automated backup tasks; you must restart the operation when you are ready.
automated backup tasks; you must restart the operation when you are ready.
5. Make sure that media is stored in the following conditions; these conditions are
also maintained within the Spectra T950 library.
6. Use only approved media in the library. For a list of approved media, see Media
7. Confirm the quality of your media and verify data integrity by occasionally
running restores on alternate drives.
8. Confirm the quality of both media and drives by running periodic disaster
recovery drills; this ensures the overall ability to recover all of your backups.
9. Read this chapter in its entirety.
Factor
a
a. All specifications are subject to change without notice.
Operating
b
b. The upper limit applies to the drive, not the library. Be sure there is adequate air flow around library at all times.
Operational Storage
Archival Storage
Shipping
Temperature
+50˚F to +113˚F
(+10˚C to +45˚C)
(+10˚C to +45˚C)
+61˚F to +90˚F
(+16˚C to +32˚C)
(+16˚C to +32˚C)
+61˚F to +77˚F
(+16˚C to +25˚C)
(+16˚C to +25˚C)
-9˚F to +120˚F
(-23˚C to +49˚C)
(-23˚C to +49˚C)
Relative Humidity
10% - 80%
20% - 80%
20% - 50%
5% - 80%
Wet Bulb
Temperature
Temperature
+79˚F (+26˚C)
+79˚F (+26˚C)
+79˚F (+26˚C)
+79˚F (+26˚C)