11.0 Interface Requirements; Sas Features; Task Management Functions; Task Management Responses - Seagate ST300MP0004 Product Manual

11.0 Interface requirements

This section partially describes the interface requirements as implemented on Enterprise Performance 15K HDD and Enterprise Turbo
SSHD 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 Enterprise Performance 15K HDD and Enterprise Turbo SSHD drives.
11.1.1

Task management functions

The table below lists the SAS task management functions supported.
Table 6 SAS task management functions supported
Task name
Abort Task
Clear ACA
Clear task set
Abort task set
Logical Unit Reset
Query Task
11.1.2

Task management responses

The table below lists the SAS response codes returned for task management functions supported.
Table 7 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

Enterprise Performance 15K HDD and Enterprise Turbo SSHD 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 Enterprise Performance 15K HDD and Enterprise Turbo SSHD 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.
S E P
EAGATE NTERPRISE ERFORMANCE
Supported
Yes
Yes
Yes
Yes
Yes
Yes
Response code
00
02
04
05
08
09
15K HDD 4 T SSHD P
V AND URBO
M , R . C
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