User Manual

SCSI Commands Reference Manual, Rev. J 472

www.seagate.com Parameters for direct access devices

ZONED field

The ZONED field indicates the type of zoned block capabilities implemented by the device server as defined in table 445.

BOCS bit

1 A BOCS bit set to one indicates that Background Operation Control is supported as described in 5.3.8

0 A BOCS bit set to zero indicates that Background Operation Control is not supported.

FUAB bit

1 A FUAB bit set to one indicates that the device server interprets the SYNCHRONIZE CACHE command and the FUA bit in read commands

and write commands in compliance with this standard.

0 A FUAB bit set to zero indicates that the device server interprets the SYNCHRONIZE CACHE command and the FUA bit in read commands

and write commands in compliance with SBC-2.

VBULS bit

1 A VBULS bit set to one indicates that the device server supports unmapped LBAs while processing VERIFY commands (see 3.55, 3.56,

3.57, and 3.58) and WRITE AND VERIFY commands (see 3.64, 3.65, 3.66, and 3.67) with the BYTCHK field set to 01b.

0 A VBULS bit set to zero indicates that the device server does not support unmapped LBAs while processing VERIFY commands and

WRITE AND VERIFY commands with the BYTCHK field set to 01b.

Table 444 Nominal Form Factor Field

Code Definition

Nominal form factor is not reported

5.25 inch

3.5 inch

2.5 inch

1.8 inch

Less than 1.8 inch

All others

Reserved

Table 445 ZONED field

Code Definition

00b Not reported

01b Device server implements the host aware zoned block device capabilities defined in ZBC (see ZBC)

10b Device server implements device managed zoned block device capabilities

11b Reserved