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In addition to using LTO Ultrium 2 Tape Cartridges with up to 200 GB capacity, the
tape drive reads and writes to certified LTO Ultrium Tape Cartridges that have
capacities of 100, 50, 30, and 10 GB. If you want to control the capacity of the
cartridge (for example, if you want to limit the capacity to obtain a faster seek time)
you can do so by issuing the SCSI command SET CAPACITY. For information
about this command, refer to the IBM TotalStorage LTO Ultrium Tape Drive SCSI
Reference.
To ensure that your tape drive conforms to IBM’s specifications for reliability, use
only IBM TotalStorage LTO Ultrium Tape Cartridges. You may use other
LTO-certified data cartridges, but they may not meet the standards of reliability that
are established by IBM. The IBM TotalStorage LTO Ultrium 200 GB Data Cartridge
cannot be interchanged with the media used in other IBM non-LTO Ultrium tape
products.
Data Cartridge
The IBM TotalStorage LTO Ultrium 200 GB Data Cartridge contains 1/2-inch,
dual-coat, metal-particle tape that has a native data capacity of 200 GB (400 GB at
2:1 compression). When processing the tape, the IBM TotalStorage LTO Ultrium 2
Tape Drive uses a linear, serpentine recording format, and reads and writes data on
512 tracks, eight tracks at a time. The first set of eight tracks 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 eight tracks for the return pass. This process continues until all
tracks are written and the tape is full, or until all data is written.
The IBM TotalStorage LTO Ultrium 200 GB Data Cartridge includes a Linear
Tape-Open Cartridge Memory (LTO-CM) chip (1 in Figure 11 on page 47), that
contains information about the cartridge and the tape (such as the name of the
manufacturer that created the tape), as well as statistical information about the
cartridge’s use. Whenever you unload a tape cartridge, the tape drive writes any
pertinent information to the cartridge memory. The storage capacity of the LTO-CM
is 4096 bytes.
The cartridge door 2 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
you insert the cartridge into the drive, a threading mechanism pulls the pin (and
tape) out of the cartridge, across the drive head, and onto a non-removable takeup
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.
The label area 5 provides a location for you to place a label. Affix only a bar code
label. When affixing a label, place it only in the recessed label area. A label that
extends outside of the recessed area can cause loading problems in the drive. The
insertion guide 6 is a large, notched area that prevents you from inserting the
cartridge incorrectly.
You can order tape cartridges with the bar code labels included, or you can order
custom labels. To obtain tape cartridges and bar code labels, see “Ordering Media
Supplies” on page 63.
The IBM TotalStorage LTO Ultrium 200 GB Data Cartridge has a nominal cartridge
life of 5000 load and unload cycles. The Generation 2 cartridge is purple; the
Generation 1 cartridge is black.
48 IBM TotalStorage LTO Ultrium 2 Tape Drive