Seagate Enterprise Capacity 3.5 HDD/Constellation ES Constellation ES (.1) SAS - Page 49
Interface Requirements
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11.0 INTERFACE REQUIREMENTS This section partially describes the interface requirements as implemented on Constellation ES.1 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 Constellation ES.1 drives. 11.1.1 task management functions Table 6 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 SUPPORTED Yes Yes Yes Yes Yes Yes 11.1.2 task management responses Table 7 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 RESPONSE CODE 00 02 04 05 08 09 11.2 DUAL PORT SUPPORT Constellation ES.1 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 Constellation ES.1 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. CONSTELLATION ES.1 SAS PRODUCT MANUAL, REV. G 43