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SCSI Description
5-50 Maxtor Atlas 10K III
The Disconnect–Reconnect Page provides the application client the means to attempt
to optimize the performance of the delivery subsystem. The data format and field
descriptions are described in Table 5-66 and Table 5-67.
Disconnect–Reconnect Page (Page 2)
Disconnect-Reconnect-Field Descriptions (Page 2)
0 PS Rsvd Page Code (02h)
1 Page Length (0Eh)
2 Buffer Full Ratio
3 Buffer Empty Ratio
4 – 5 Bus Inactivity Limit
6 – 7 Disconnect Time Limit
8 – 9 Connect Time Limit
10 – 11 Maximum Burst Size
12 EMDP Fairness Arbitration DImm DTDC
13 Reserved
14 – 15 First Burst Size
PS 0
Parameters Savable. This bit is only used with the MODE SENSE com-
mand. A returned value of 1 indicates that the target is capable of sav-
ing the page in a non-volatile, vendor-specific location. The bit is
reserved with the MODE SELECT command.
Buffer Full
Ratio
0
The Buffer Full Ratio indicates how full the buffer should be prior to re-
questing an interconnect tenancy. Applies to READ operations only.
The default of 0 indicates to the drive that it should use its default ratio.
Buffer Empty
Ratio
0
The Buffer Empty Ratio indicates how full the buffer should be prior to
requesting an interconnect tenancy. Applies to READ operations only.
The default of 0 indicates to the drive that it should use its default ratio.
Bus Inactivity
Limit
0
The Bus Inactivity Limit indicates the maximum duration of any inter-
connect tenancy during which no data is transferred.
Disconnect
Time Limit
0
The Disconnect Time Limit specifies the minimum time, in 100 micro-
second increments, that the drive waits after releasing the SCSI bus be-
fore reselecting. The drive supports a maximum value of 0xFF. Values
greater than 0xFF are treated as 0xFF. The default value of 0 indicates
that the drive can reslect immediately after releasing the bus.
Connect Time
Limit
0
The Connect Time Limit indicates the maximum duration of a single in-
terconnect tenancy.
Maximum
Burst Size
0
The Maximum Burst Size
specifies the maximum amount of data that the drive will transfer dur-
ing a data phase before disconnecting from the bus, assuming it was
given the disconnect privilege. This value is expressed in increments of
data sectors (that is, a value of 1 indicates 512 bytes, a value of 2 in-
dicates 1024 bytes). The default value of 0 indicates that there is no
limit on the amount of data transferred per connection.