Exabyte EXB-8205 Betriebsanleitung PDF herunterladen (Seite 360)

EEPROM

option

Definition Possible values Default

value

Option is

set to...

Maximum

reselection

tries

Controls the maximum number

of times that the CTS will

attempt to reconnect to the

initiator before giving up. Each

reselection will time out after

either 5 msec or 250 msec,

depending on what you select

for the Reselection timeout

option (see the next option).

0 – The CTS should continue to

reselect the initiator until it

works. There is no limit on the

number of attempts.

n

– The CTS should give up and

consider the operation aborted

after

n

reselections fail (

n

can be

any non-zero value from 1 to

255).

0

Reselection

timeout

Controls the amount of time in

msec before the CTS will time

out during its attempts to

reconnect to the initiator (see the

previous option).

250 – The reselection attempt

should time out after 250 msec.

5 – The reselection attempt

should time out after 5 msec.

250

EBD unit size

Controls whether even-byte

disconnects occur on two-byte

boundaries or on four-byte

boundaries.

Note: This option applies only

when even-byte disconnects

are enabled (either by the

Even byte disconnect option—

see page A-8—or by the EBD

bit in the MODE SELECT

command).

4 BYTES – Even-byte

disconnects occur on four-byte

boundaries. If you want to use

even-byte disconnect during

read and write operations, be

sure the logical block size is

divisible by 4.

2 BYTES – Even-byte

disconnects occur on two-byte

boundaries. If you want to use

even-byte disconnect during

read and write operations, be

sure the logical block size is

divisible by 2.

4 BYTES

Disconnect

after CDB

Controls whether the CTS

disconnects from the SCSI bus

after receiving any command or

after receiving tape motion

commands only.

DISABLE – The CTS does not

disconnect after receiving the

CDB of an information command

(except MODE SELECT format

partition for the EXB-8505), but

does disconnect after receiving a

tape motion command if the

command is legal.

ENABLE –TheCTS

disconnects after receiving the

CDB for all commands.

DISABLE

Save

pointers in

Data phase

Controls whether the CTS sends

a Save Data Pointer (02h)

message when it is ready to

disconnect after all data has

been transferred during a Data

phase.

See page 2-18 for more

information.

SP END – The CTS should send

a Save Data Pointer message

when it disconnects on a data

command, regardless of future

data transfers for the command.

NO SP – The CTS should not

send a Save Data Pointer

message when it is

disconnecting and no more data

transfers are expected for the

current command.

SP END

A-24

EXB-8205 and EXB-8505

(Standard and XL)

510503

Appendix A EEPROM Options

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