Seagate ST800FM0053 Seagate 1200 SSD Product Manual - Page 58

Nterface Requirements

Page 58 highlights

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 SUPPORTED Yes Yes Yes Yes Yes Yes Yes Yes Yes 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 RESPONSE CODE 00 02 04 05 08 09 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. A 52

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S
EAGATE
1200 SSD P
RODUCT
M
ANUAL
, R
EV
. A
52
11.0 I
NTERFACE 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.
11.1.2
Task management responses
Table 14 lists the SAS response codes returned for task management functions supported.
11.2
D
UAL 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.
Table 13
SAS task management functions supported
T
ASK NAME
S
UPPORTED
Abort Task
Yes
Abort task set
Yes
Clear ACA
Yes
Clear task set
Yes
I_T Nexus Reset
Yes
Logical Unit Reset
Yes
Query Task
Yes
Query Task Set
Yes
Query Asynchronous Event
Yes
Table 14
Task management response codes
F
UNCTION NAME
R
ESPONSE CODE
Function complete
00
Invalid frame
02
Function not supported
04
Function failed
05
Function succeeded
08
Invalid logical unit
09