User Manual

SCSI Commands Reference Manual, Rev. J 419
www.seagate.com Parameters for direct access devices
5.3.19 Logical Block Provisioning mode page (1Ch/02h)
5.3.19.1 Introduction
The Logical Block Provisioning mode page (see table 393) specifies the parameters that a device server that supports logical
block provisioning threshold values (see
SBC-4) shall use to report logical block provisioning threshold notifications (see SBC-4).
The mode page policy (see
SPC-5) for this page shall be shared.
If a method not defined by this standard changes the parameter data to be returned by a device server in the Logical Block
Provisioning mode page, then the device server shall establish a unit attention condition for the SCSI initiator port associated
with every I_T nexus with the additional sense code set to MODE PARAMETERS CHANGED.
PS bit, SPF bit, PAGE CODE field, SUBPAGE CODE field, and PAGE LENGTH field
The parameters saveable (PS) bit, the subpage format (SPF) bit, the PAGE CODE field, the SUBPAGE CODE field, and the PAGE LENGTH field are
defined in SPC-5 and shall be set to the values shown in
table 393 for the Logical Block Provisioning mode page.
SITUA bit
1 specifies that the logical block provisioning threshold notification unit attention condition is established on a single I_T nexus as
described in SBC-4.
0 specifies that the logical block provisioning threshold notification unit attention condition is established on multiple I_T nexuses as
described in SBC-4.
Threshold descriptors fields
The threshold descriptors are defined in 5.3.19.2.
Table 393 Logical Block Provisioning mode page
Bit
Byte
7 6 5 4 3 2 1 0
0 PS SPF (1b) PAGE CODE (1Ch)
1 SUBPAGE CODE (02h)
2 (MSB)
PAGE LENGTH (n - 3)
3 (LSB)
4 Reserved SITUA
5
Reserved. . .
15
Threshold descriptors
16
Threshold descriptor [first] (see 5.3.19.2). . .
23
. . . . . .
1024
Threshold descriptor [last] (see 5.3.19.2). . .
n