11.0 Interface Requirements; Sas Features; Task Management Functions; Task Management Responses - Seagate ST400FM0093 Product Manual

11.0 Interface requirements

This section partially describes the interface requirements as implemented on Seagate 1200 SSD drives. Additional
information is provided in the SAS Interface Manual (part number 100293071).
11.1

SAS features

This section lists the SAS-specific features supported by Seagate 1200 SSD drives.
11.1.1

Task management functions

Table 13 lists the SAS task management functions supported.
Table 13 SAS task management functions supported
Task name
Abort Task
Abort task set
Clear ACA
Clear task set
I_T Nexus Reset
Logical Unit Reset
Query Task
Query Task Set
Query Asynchronous Event
11.1.2

Task management responses

Table 14 lists the SAS response codes returned for task management functions supported.
Table 14 Task management response codes
Function name
Function complete
Invalid frame
Function not supported
Function failed
Function succeeded
Invalid logical unit
11.2

Dual port support

Seagate 1200 SSD 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 12Gb/s or the first port can run at
12Gb/s while the second port runs at 6Gb/s.) The supported link rates are 1.5, 3.0, 6.0 or 12.0 Gb/s.
Subject to buffer availability, the Seagate 1200 SSD 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.
Seagate 1200 SSD Product Manual, Rev. C
Supported
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Response code
00
02
04
05
08
09
57