The drive itself determines when it must be cleaned and notifies the library. When notified, the library indicates that the drive needs cleaning by turning ON the "Clean
Drive" LED on the front panel of the library and posting a message on the library display.
A tape drive within a library requires the use of a library menu function to either automatically or manually clean the tape drive. See
Methods of cleaning the tape drive
Important: The drive must be cleaned only when it is requested by the drive.
The IBM Ultrium Universal Cleaning Cartridge is valid for 50 uses. The cartridge's LTO-CM (Cartridge Memory) chip tracks the number of times that the cartridge is used.
Note: The drive automatically ejects an expired cleaning cartridge.
Cartridge memory chip (LTO-CM)
All generations of the IBM® LTO Ultrium data cartridges include a Linear Tape-Open Cartridge Memory (LTO-CM) chip.
This chip ( 1 in
) contains information about the cartridge and the tape (such as the name of the manufacturer that created the tape), and statistical information
about the cartridge's use. The LTO-CM enhances the efficiency of the cartridge. For example, the LTO-CM stores the end-of-data location which, when the next time this
cartridge is inserted and the Write command is issued, enables the drive to quickly locate the recording area and begin recording. The LTO-CM also aids in determining the
reliability of the cartridge by storing data about its age, how many times it was loaded, and how many errors it accumulated. Whenever a tape cartridge is unloaded, the
tape drive writes any pertinent information to the cartridge memory.
The storage capacity of the LTO Generations 9 LTO-CM is 32640 bytes. This capacity is double that of Generations 8, 7, and 6 (16320 bytes), and four times the capacity of
Generations 5 and 4 LTO-CM, winch is 8160 bytes. LTO Generations 3, 2, and 1 have an LTO-CM capacity of 4096 bytes.
Bar code labels
Bar code label requirements for LTO drives.
A bar code label contains:
A volume serial number (VOLSER) that is human-readable.
A bar code that the library can read.
Note: LTO drives do not require cartridges to have bar code labels. Specific library types or models might require cartridges to have bar code labels.
Table 1. Bar code label requirements for Ultrium tape
drives and libraries
Ultrium Tape Drive/Library
Bar Code Label Requirements
3572
Required
3573
Required
3576
Required
3580
Not required
3581
Required with optional Bar Code Reader
3582
Required
3583
Required
3584
Required
When read by a library's bar code reader, the bar code identifies the cartridge's VOLSER to the library. The bar code also tells the library whether the cartridge is a data
cartridge or cleaning cartridge. In addition, the bar code includes the two-character media-type identifier or M8, or
Lx
, where
x
equals 1, 2, 3, 4, 5, 6, 7, 8, or 9 . The letter
L
identifies the cartridge as an LTO cartridge and the number represents the generation of cartridge for that cartridge type.
shows a sample bar code label for the
LTO Ultrium tape cartridge.
Tape cartridges can be ordered with the labels included or with custom labels. To order tape cartridges and bar code labels, see
Ordering media supplies
. The bar code for
usage in IBM® tape libraries must meet predefined specifications. They include (but are not limited to):
Eight uppercase alphanumeric characters, where the last 2 characters must be
L9
,
L8
,
L7
,
L6
,
L5
,
L4
,
L3
,
L2
, or
L1
(LZ, LY, LX, LW, LV, LU, or LT for Ultrium WORM
cartridges).
Label and printing to be non-glossy.
Nominal narrow line or space width of 0.423 mm (0.017 in.)
Wide to narrow ratio of 2.75:1.
Minimum bar length of 11.1 mm (0.44 in.)
Table 2. Cartridges and VOLSERs compatible with the Ultrium Tape Drives
Cartridges
VOLSER
Ultrium 9 Data Cartridge
xxxxxxL9
Ultrium 9 WORM Cartridge
xxxxxxLZ
Ultrium 8 Data Cartridge
xxxxxxL8
Ultrium 8 WORM Cartridge
xxxxxxLY
Ultrium M8 Data Cartridge
xxxxxxM8
Ultrium 7 Data Cartridge
xxxxxxL7
Ultrium 7 WORM Cartridge
xxxxxxLX
Ultrium 6 Data Cartridge
xxxxxxL6
Ultrium 6 WORM Cartridge
xxxxxxLW
Ultrium 5 Data Cartridge
xxxxxxL5
Ultrium 5 WORM Cartridge
xxxxxxLV
TS2900 Tape Autoloader
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Содержание System Storage TS2900
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