Sony SDX-800V/R 사용자 설명서

SONY AIT-3Ex drive SDX-800V series Ver.1.1 

 

6-61 

SCOPE: The value in this field indicates whether a persistent reservation applies to an entire logical unit to an 

element. The value in this filed are defined in table 6-58. 

0h 

Logical Unit 

Persistent reservation applies to the full logical unit  

1h  

Obsolete 

2h 

Element (not supported in this drive) Persistent reservation applies to the specified element 

3h-fh Reserved 

Reserved 

Logical Unit: A SCOPE value of Logical Unit indicates that the persistent reservation applies to the entire logical 

unit. The Logical Unit scope shall be implemented by all device servers that implement PERSISTENT RESERVE 

OUT. 

Element: A SCOPE filed value of Element indicates that the persistent reservation applies to the element of the 
logical unit defined by the SCOPE-SPECIFIC Address field in the PERSISTENT RESERVE OUT parameter list. 

The drive do not support it. 

TYPE: The value in the TYPE filed specify the characteristics of the persistent reservation being established for all 

data blocks within the element or within the logical unit. Table 6-59 defines the characteristic of the different type 

values. For each persistent reservation type, table 6-59 lists code value and describes the required device server 

support. In this table, the description of required device server support is divided in two paragraphs. The first 
paragraph defines the required handling for read operations. The second paragraph defines the required handling 

for write operations. 

0h 

  

Obsolete  

1h Write 

Exclusive 

Reads Shared: Any application client on any initiator may execute tasks that request 
transfers from the storage medium or cache of the logical unit to the initiator. 

Writes Exclusive: Any task from any initiator other than the initiator holding the 

persistent reservation that requests a transfer from the initiator to the storage medium 

or cache of the logical unit shall result in a reservation conflict. 

2h  

Obsolete 

3h Exclusive 

Access 

Reads Exclusive: Any task from any initiator other than the initiator holding the 
persistent reservation that requests a transfer from the storage medium or cache of 

the logical unit shall result in a reservation conflict. 

Write Exclusive: Any task from any initiator other than the initiator holding the 

persistent reservation that requests a transfer from the initiator to the storage medium 

or cache of the logical unit shall result in a reservation conflict. 

4h  

Obsolete 

5h Write 

Exclusive- 

Registrants 

Only 

Reads Shared: Any application client on any initiator may execute tasks that request 

transfers from the storage medium or cache of the logical unit to the initiator. 

Writes Exclusive: Any task from any initiator other than the initiator holding the 

persistent reservation that requests a transfer from the initiator to the storage medium 

or cache of the logical unit shall result in a reservation conflict. 

6h Exclusive 

Access- 

Registrants 

Only (not 
supported in 

this drive) 

Reads Exclusive: A task that requests a transfer from the storage medium or cache 

of the logical unit to an initiator that has not previously requested a REGISTER 

service action with the drive shall result in a reservation conflict. 

Write Exclusive: Any task from any initiator other than the initiator holding the 
persistent reservation that requests a transfer from the initiator to the storage medium 

or cache of the logical unit shall result in a reservation conflict. 

7h-Fh Reserved