Seagate ST800FM0053 Seagate 1200 SSD Product Manual - Page 58
Nterface Requirements
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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