Exabyte EXB-8205 Instruções de Operação descarregar pdf (Página 386)

100

101

Autosizing of Data Cartridges

Autosizing is the process that occurs during a load operation when

the CTS spaces forward from the physical beginning of tape (PBOT)

to the logical beginning of tape (LBOT) and determines the length of

thetapeinuse.

The CTS accurately determines the length of the EXATAPE 15m, 54m,

and 160m XL cartridges during the load operation. For the EXATAPE

112m cartridge, the CTS initially uses the settings of the CT and 112m

bits in the MODE SELECT command (see page 10-21) to estimate the

length of the tape. Then, the CTS resizes the 112m cartridge as the

tape position approaches LEOT.

The CTS estimates the tape length as shown in Table C-4.

Type of EXATAPE

loaded

Setting of

CT bit

Setting of

112m bit

Tape initially

sized as...

15m or 54m

15mor54m

0or1 1

112m

106m tape

0 or 1 1 112m

160m XL

0or1 0or1 160m

Exabyte does not recommend using tapes of this length in the CTS.

This tape size is intended for the EXB-8505XL and EXB-8205XL only.

If the CT and 112m bits are incorrectly set for the type of cartridge

loaded, the CTS may increase the estimated block count when it

resizes the tape. This ensures that LEOT is always detected correctly

and prevents tape capacity errors.

Table C-4 Initial autosizing estimates

C-4

EXB-8205 and EXB-8505

(Standard and XL)

510503

Appendix C Data Cartridge Capacities

1 2 ... 381 382 383 384 385 386 387 388 389 390 391 ... 445 446

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