Exabyte EXB-8205 Instruções de Operação descarregar pdf (Página 375)

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2. Using additional uncompressed “filler” data, create a second

pad after the directory pad. The minimum size for the second

pad is 12 MBytes. This pad allows room for the erase head

position and the EOD mark written when you rewind the tape

after updating the master directory.

Note: For best results, use 1 KByte (or smaller) fixed-length

blocks to create the second pad.

3. Write a long filemark after the 12-MByte pad. This filemark

provides a clear separation between the pad and data areas.

4. Issue a READ POSITION command to determine the tape’s

current position. This will be the starting location for the first file

in the first data set (DS 1).

In the initiator’s memory, store the information returned for the

First Block Location field (bytes 04 through 07) of the READ

POSITION data. This information will be used later to update

the directory for the data set (DIR 1).

DIRECTORY PAD 12 MBYTE PADLBOT

LBOT 12 MBYTE PAD LFMDIRECTORY PAD

LFMLBOT

1. Issue READ

POSITION

2. Store First Block

Location data

12 MBYTE PADDIRECTORY PAD

B-6

EXB-8205 and EXB-8505

(Standard and XL)

510503

Appendix B Directory Support

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