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Note: The Write Buffer Full Ratio and the Read Buffer Empty Ratio

in the Device Configuration Page have the same function as

the Motion Threshold in the Vendor Unique Parameters Page

1. If both pages are sent, the value that is received last by the

CTS takes precedence. For more information about the

motion threshold, see Section 3.6.

Bytes 06 and 07 - Write Delay Time

If a WRITE command completes without transferring enough data to

exceed the value specified for the Write Buffer Full Ratio, the value

specified by the Write Delay Time field is used to determine the

maximum amount of time, in units of 100 msec, that the data will

remain in the buffer. When the time specified by Write Delay Time

elapses, the data in the buffer is written to tape.

A value of 0 for this field indicates that a partially full buffer will not

be flushed to tape until the CTS receives a command that would

otherwise flush the buffer (for example, REWIND, UNLOAD, SPACE,

LOCATE in the reverse direction, and so on).

The default value for this byte is 0. Valid values for this field are

0000h to 3FFFh (approximately 27 minutes). A value greater than

3FFFh is not an error and will be truncated to 3FFFh.

Byte 08, Bit 7 - DBR (Data Buffer Recovery)

The DBR bit is not supported by the CTS. The valid value for this bit

is 0.

Byte 08, Bit 6 - BIS (Block Identifier Supported)

The BIS bit indicates that block IDs are written on the tape relative to

each partition. This bit is set to 1 in the MODE SENSE data and is

ignored by the CTS in the MODE SELECT command.

Byte 08, Bit 5 - RSmk (Report Setmarks)

EXB-8505 The RSmk bit specifies whether the EXB-8505 should return Check

Condition status when it encounters a setmark on the tape during

read, verify, space block, or space filemark operations, as follows:

0 – Do not report setmarks (setmarks are ignored).

1 – Return Check Condition status when a setmark is encountered

(default).

May 1994 EXB-8205 and EXB-8505

(Standard and XL)

10-41

10 MODE SELECT (15h) andMODE SENSE (1Ah)

1 2 ... 192 193 194 195 196 197 198 199 200 201 202 ... 445 446

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Exabyte EXB-8205 Istruzioni per gli Interventi Pagina 197