Seagate ST3300457FC Cheetah 15K.7 SAS Product Manual - Page 52
Dual port support, SCSI commands supported
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12.2 Dual port support Cheetah 15K.7 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 6Gbit/sec or the first port can run at 6Gbit/sec while the second port runs at 3Gbit/sec.) The supported link rates are 1.5, 3.0, or 6.0 Gbits/sec. Subject to buffer availability, the Cheetah 15K.7 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. 12.3 SCSI commands supported Table 19 lists the SCSI commands supported by Cheetah 15K.7 drives. Table 19: Commands supported by Cheetah 15K.6 SAS family drives Command name Change Definition Compare Copy Copy and Verify Format Unit [1] DPRY bit supported DCRT bit supported STPF bit supported IP bit supported DSP bit supported IMMED bit supported VS (vendor specific) Inquiry Date Code page (C1h) Device Behavior page (C3h) Firmware Numbers page (C0h) Implemented Operating Def page (81h) Jumper Settings page (C2h) Supported Vital Product Data page (00h) Unit Serial Number page (80h) Lock-unlock cache Log Select PCR bit DU bit DS bit Command code 40h 39h 18h 3Ah 04h 12h 36h 4Ch Supported N N N N Y N Y Y Y Y Y N Y Y Y Y Y Y Y Y N Y Y N Y 46 Cheetah 15K.7 SAS Product Manual, Rev. C