Seagate ST15150N Product Manual - Page 76

66

ST15150N/ND/W/WD/WC/DC Product Manual, Rev. D

11.4

SCSI bus conditions

and miscellaneous features supported

Asynchronous SCSI bus conditions supported by the drive are listed in Table

11. These conditions cause the SCSI device to perform certain actions and

can alter the phase sequence. Other miscellaneous operating features

supported are also listed here.

Table 11. SCSI bus conditions and other miscellaneous features

Supported by

ASA I

ASA I

ASA II

Conditions or feature

SCSI-1

SCSI-2

SCSI-2

Adaptive caching

N

N

N

Arbitrating system

Y

Y

Y

Asynchronous data transfer

Y

Y

Y

Asynchronous event notification

N

N

N

Attention condition

Y

Y

Y

Contingent allegiance condition

N

Y

Y

Deferred error handling

N

Y

Y

Differential interface circuits available

Y

Y

Y

Disconnect/reconnect

Y

Y

Y

Parameter rounding

Y

Y

Y

(controlled by round bit in Mode Select page 0)

Queue tagging (up to 64 queue tags supported)

N

Y

Y

Reporting actual retry count

N

Y

Y

in extended sense bytes 15,16, and 17

Reset condition

Y

Y

Y

Segmented caching

Y

Y

Y

SMP = 1 in Mode Select command needed to save

Y

Y

Y

RPL and rotational offset bytes (in Table 5.2.1-25

of SCSI-2 Interface Product Manual, Vol. 2).

Synchronized (locked) spindle operation

Y

Y

Y

Synchronous data transfer

Y

Y

Y

Zero latency read

N

N

N

ASA I

ASAI

ASAII

Status supported

SCSI-1

SCSI-2

SCSI-2

Busy

Y

Y

Y

Check condition

Y

Y

Y

Condition met/good

Y

Y

Y

Good

Y

Y

Y

Intermediate/condition met/good

Y

Y

Y

Intermediate/good

Y

Y

Y

Queue full

Y

Y

Y

Reservation conflict

Y

Y

Y

Seagate ST15150N Product Manual - Page 76

SCSI bus conditions, and miscellaneous features supported

Page 76 highlights