IBM TS22 Series, Руководство пользователя, Страница: 122 / 159

The IBM cleaning cartridges are valid for 50 uses. The cartridge's LTO-CM chip tracks the number of times that the cartridge is used.
Important: After 50 uses, the cleaning cartridge expires. It is no longer usable, and must be replaced
Cartridge memory chip (LTO-CM)
All generations of the IBM® LTO Ultrium Data Cartridges include a Linear Tape-Open Cartridge Memory (LTO-CM) chip.
The Linear Tape-Open Cartridge Memory (LTO-CM) chip ( 1 in Figure 1 ) holds information about that specific cartridge, the media in the cartridge and the data on
the media. The LTO-CM enhances the efficiency of the cartridge. For example, the LTO-CM stores the end-of-data location. When the cartridge is inserted and the
Write command is entered, the drive can 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. When you unload a tape cartridge, the tape drive writes any
pertinent information to the cartridge memory.
The storage capacity of the Generation 9 LTO-CM is 32640 bytes. This capacity is double that of Generations 6, 7, and 8 LTO-CM (16320 bytes), and four times the
capacity of Generations 5 and 4 LTO-CM, which is 8160 bytes. LTO Generations 1, 2, and 3 have an LTO-CM capacity of 4096 bytes.
Bar code label
Data cartridges can have bar code labels for identification..
A bar code label contains:
A volume serial number (VOLSER) that is human-readable.
A bar code that the library can read.
Note: LTO tape drives do not require tape cartridges to have bar code labels. However, IBM libraries require tape cartridges to have bar code labeled on them for
automation and human readability.
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, see
Table 1 .
Figure 1 shows a sample bar code label for the LTO Ultrium Tape Cartridge.
Tape cartridges are 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 refer to the cartridge generation and WORM capability. See Table 1 .
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 1. Cartridges and VOLSERs compatible with the LTO tape drives
Cartridges VOLSER
Ultrium 9 Data Cartridge xxxxxxL9
Ultrium 9 WORM Cartridge xxxxxxLZ
Ultrium 8 Data Cartridge xxxxxxL8
Ultrium 8 WORM Cartridge xxxxxxLY
LTO M8 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
Ultrium 4 Data Cartridge xxxxxxL4
Ultrium 4 WORM Cartridge xxxxxxLU
Ultrium 3 Data Cartridge xxxxxxL3
Ultrium 3 WORM Cartridge xxxxxxLT
Ultrium 2 Data Cartridge xxxxxxL2
Ultrium 1 Data Cartridge (READ ONLY) xxxxxxL1
LTO Ultrium Cleaning Cartridge CLNxxxLx
*An Ultrium 3 Tape Drive must have a minimum firmware level of 54xx for it to be compatible with the WORM cartridge.
To determine the complete specifications of the bar code and the bar code label, visit the web at http://www.ibm.com/ and enter "IBM LTO Ultrium Cartridge Label
Specification" in the search box. Or contact your IBM sales representative.
When a bar code label is attached to a tape cartridge, place the label only in the recessed label area (see 5 in
LTO media ). A label that extends outside of the
recessed area can cause loading problems in the drive.
Attention: Do not place any type of mark on the white space at either end of the bar code. A mark in this area might prevent the library from reading the label.
IBM TS22xx Tape Drives 115