3.1.18.3.2 Persistent Reservations Type - Fujitsu MAX3073NC - SCSI,80, Dell DC961,Hard Drive Scsi Logical Interface Specifications

Command Specifications
Code
0h Logical Unit
1h Reserved
2h Element
(not supported)
3h-Fh Reserved
3.1.18.3.1.1 Logical Unit scope
The "Scope" field value of the Logical Unit indicates that persistent reservations apply to the entire
Logical Unit. All of the drives supporting PERSISTENT RESERVE OUT are required to support the
scope of the Logical Unit.
3.1.18.3.1.2 Element scope (not supported by MA*3*** series product)
The "Scope" field value of the logical unit indicates that persistent reservations apply to the element of
the logical unit defined in the "Scope-specific Address" field on the PERSISTENT RESERVE OUT
parameter list. An element is defined with the SCSI-3 Medium Changer Commands (SMC) standard.
Support of Element Scope is optional.

3.1.18.3.2 Persistent reservations type

The "Type" field value defines the reservation attributes applied to data blocks within the logical unit.
Table 3.2 shows attributes for four Type values. Table 3.2 shows the code value for each Type and
requirements for the supporting drive. The requirements for the supporting drive are explained in two
paragraphs. The first paragraph describes the handling required for read operations. The second
paragraph describes the handling required for write operations.
3-60
Name
Persistent reservation applies to an entire logical unit
Reserved
Persistent reservation applies to the specified element
Reserved
Description
C141-C010