10.0 Interface Requirements; Sas Features; Task Management Functions; Task Management Responses - Seagate ST12000NM0027 Product Manual

10.0 Interface requirements

This section partially describes the interface requirements as implemented on Enterprise Capacity 3.5 HDD v7 drives. Additional information is
provided in the SAS Interface Manual (part number 100293071).
10.1

SAS features

This section lists the SAS-specific features supported by Enterprise Capacity 3.5 HDD v7 drives.
10.1.1

task management functions

Table 5 lists the SAS task management functions supported.
Table 5 SAS task management functions supported
Task name
Abort Task
Clear ACA
Clear task set
Abort task set
Logical Unit Reset
Query Task
10.1.2

task management responses

Table 6 lists the SAS response codes returned for task management functions supported.
Table 6 Task management response codes
Function name
Function complete
Invalid frame
Function not supported
Function failed
Function succeeded
Invalid logical unit
10.2

Dual port support

Enterprise Capacity 3.5 HDD v7 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 6Gb/s while the second
port runs at 3Gb/s.) The supported link rates are 3.0, 6.0, or 12.0 Gb/s.
Subject to buffer availability, the Enterprise Capacity 3.5 HDD v7 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 Enterprise Capacity 3.5 HDD v7 SAS Product Manual, Rev. C
Supported
Yes
Yes
Yes
Yes
Yes
Yes
Response code
00
02
04
05
08
09
42