Seagate ST1000NM0033 manual Interface Requirements, SAS Features, Task management functions

Models: ST1000NM0033

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11.0INTERFACE REQUIREMENTS

This section partially describes the interface requirements as implemented on Constellation ES.3 drives. Additional information is provided in the SAS Interface Manual (part number 100293071).

11.1SAS FEATURES

This section lists the SAS-specific features supported by Constellation ES.3 drives.

11.1.1task management functions

Table 7 lists the SAS task management functions supported.

Table 7 SAS task management functions supported

TASK NAME

SUPPORTED

 

 

Abort Task

Yes

 

 

Clear ACA

Yes

 

 

Clear task set

Yes

 

 

Abort task set

Yes

 

 

Logical Unit Reset

Yes

 

 

Query Task

Yes

 

 

11.1.2task management responses

Table 8 lists the SAS response codes returned for task management functions supported.

Table 8 Task management response codes

FUNCTION NAME

RESPONSE CODE

 

 

Function complete

00

 

 

Invalid frame

02

 

 

Function not supported

04

 

 

Function failed

05

 

 

Function succeeded

08

 

 

Invalid logical unit

09

 

 

11.2DUAL PORT SUPPORT

Constellation ES.3 SAS drives have two independent ports. These ports may be connected in the same or different SCSI domains. Each drive port has a unique SAS address.

The two ports have the capability of independent port clocking (e.g. both ports can run at 6Gb/s or the first port can run at 6Gb/s while the second port runs at 3Gb/s. The supported link rates are 1.5, 3.0, or 6.0 Gb/s.

Subject to buffer availability, the Constellation ES.3 drives support:

Concurrent port transfers—The drive supports receiving COMMAND, TASK management transfers on both ports at the same time.

Full duplex—The drive supports sending XFER_RDY, DATA and RESPONSE transfers while receiving frames on both ports.

CONSTELLATION ES.3 SAS PRODUCT MANUAL, REV. B

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Seagate ST1000NM0033 manual Interface Requirements, SAS Features, Task management functions, Task management responses