56
Savvio 10K.5 SAS Product Manual, Rev. D
12.2
Dual port support
Savvio 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 Savvio 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 9 lists the SCSI commands supported by Savvio drives.
Table 9:
Supported commands
Command name
Command code
Supported
Change Definition
40h
N
Compare
39h
N
Copy
18h
N
Copy and Verify
3Ah
N
Format Unit [1]
04h
Y
DPRY bit supported
N
DCRT bit supported
Y
STPF bit supported
Y
IP bit supported
Y
DSP bit supported
Y
IMMED bit supported
Y
VS (vendor specific)
N
Inquiry
12h
Y
Date Code page (C1h)
Y
Device Behavior page (C3h)
Y
Firmware Numbers page (C0h)
Y
Implemented Operating Def page (81h)
Y
Jumper Settings page (C2h)
Y
Supported Vital Product Data page (00h)
Y
Unit Serial Number page (80h)
Y
Lock-unlock cache
36h
N
Log Select
4Ch
Y
PCR bit
Y
DU bit
N
DS bit
Y
TSD bit
Y
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