User Manual

SCSI Commands Reference Manual, Rev. J 437
www.seagate.com Parameters for direct access devices
DSA (Disable Soft Address)
1 The target does not select a soft address if there is a conflict for the Select_ID address available in the SCA connector during loop initial-
ization. If there is a Select_ID address conflict, the target enters the non-participation state. If the target detects loop initialization while
in the non-participation state, the target again attempts to get the Select_ID address.
0 The target attempts to obtain a soft address during loop initialization if the Select_ID address is not available or if the Select_ID address
indicates the use of a soft address (7Fh).
If ESI activity is underway when the request for the hard address is received, the drive shall use the last known value of the hard address before
the current ESI activity started.
ALWLI (Allow Login Without Loop Initialization)
1 The target uses the Select_ID address available in the SCA connector and accepts logins without verifying the address with loop initial-
ization.
0 The target must verify the address through loop initialization before accepting a login.
DTIPE (Disable Target Initiated Port Enable)
1 The target waits for an initiator to send the Loop Port Enable primitive before inserting itself into the loop. The target uses the Select_ID
address available in the SCA connector to determine if primitives are addressed to it. If the PLPB bit is set to one and the DTIPE bit is set
to one, then the device server returns Check Condition status and sets the sense key to Illegal Request with the additional sense code
set to Invalid Field in the Parameter List.
0 After completing self test, the target enables the port in the loop without waiting for a Loop Port Enable primitive.
DTOLI (Disable Target Originated Loop Initialization)
1 The target does not originate the initializing LIP following insertion into the loop. The target responds to an Initializing LIP when it is
received. The target originates the Loop Failure LIP if it detects loop failure at its input. The target originates the Initializing LIP when the
loop failure is corrected.
0 After completing self test, the target originates the Initializing LIP when it enables a port in a loop.
SEQUENCE INITIATIVE RESOURCE RECOVERY TIMEOUT VALUE (RR_TOVSEQ_INIT) field
The RR_TOVSEQ_INIT timer (see FCP-4) is defined by the RR_TOVSEQ_INIT field and the RR_TOV UNITS field.
The RR_TOV UNITS field indicates the units for the RR_TOVSEQ_INIT field value, according to Table 409.
The RR_TOVSEQ_INIT field indicates the number of time units specified by the RR_TOV UNITS field that shall be used by the timer that performs the
RR_TOVSEQ_INIT timeout function. If no timer is specified, the RR_TOVSEQ_INIT value shall be ignored by the device server and a vendor specific
default value shall be used for RR_TOVSEQ_INIT.
Table 409 Values for RR_TOV UNITS
Byte 6
Units of measure for
RR_TOVSEQ_INIT
bit 2 bit 1 bit 0
0 0 0
No timer is specified
0 0 1
0.001 s
0 1 1
0.1 s
1 0 1
10 s
All other values Reserved