IBM TotalStorage 3580 L33, Руководство по установке, эксплуатации и обслуживанию

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Data Cartridge
The different generations of IBM TotalStorage Ultrium data cartridges can be
identified by color:
Data Cartridge Case Color
Ultrium 3 Slate Blue
Ultrium 3 Write Once, Read Many (WORM) Slate Blue top; Grey bottom
Ultrium 2 Purple
Ultrium 1 Black
All three generations contain 1/2-inch, dual-coat, metal-particle tape. The native
data capacity of Ultrium data cartridges is as follows:
Data Cartridge Native Data Capacity
Ultrium 3 400 GB (800 GB at 2:1 compression)
Ultrium 2 200 GB (400 GB at 2:1 compression)
Ultrium 1 100 GB (200 GB at 2:1 compression)
When processing tape in the cartridges, Ultrium Tape Drives use a linear,
serpentine recording format.
v The Ultrium 3 drive reads and writes data on 704 tracks, 16 tracks at a time.
v
The Ultrium 2 drive reads and writes data on 512 tracks, 8 tracks at a time.
v The Ultrium 1 drive reads and writes data on 384 tracks, 8 tracks at a time.
The first set of tracks (16 for Ultrium 3; 8 for Ultrium 2 and 1) is written from near
the beginning of the tape to near the end of the tape. The head then repositions to
the next set of tracks for the return pass. This process continues until all tracks are
written and the cartridge is full, or until all data is written.
The cartridge door (
2
in Figure 8 on page 23) protects the tape from
contamination when the cartridge is out of the drive. Behind the door, the tape is
attached to a leader pin (
3
). When the cartridge is inserted into the drive, a
threading mechanism pulls the pin (and tape) out of the cartridge, across the drive
head, and onto a non-removable take-up reel. The head can then read or write data
from or to the tape.
The write-protect switch
4
prevents data from being written to the tape cartridge
(see “Write-Protect Switch” on page 28). The label area
5
provides a location to
place a label (see “Bar Code Label” on page 26). The insertion guide
6
is a large,
notched area that prevents the cartridge from being inserted incorrectly.
You can order tape cartridges with bar code labels included, or you can order
custom labels. To obtain tape cartridges and bar code labels, see “Ordering Media
Supplies” on page 42.
All generations of the LTO Ultrium Data Cartridge have a nominal cartridge life of
5000 load and unload cycles.
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IBM TotalStorage 3580 Tape Drive Setup, Operator, and Service Guide
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