User's Guide

Quantum Scalar Intelligent Libraries SCSI Reference Guide Guide 39
Disconnect-Reconnect Page (02h)
The Disconnect-Reconnect mode page is only supported by the Controller logical unit, and describes the
interconnect tenancy characteristics of the Fibre Channel interface. An interconnect tenancy is a period of
time during which a SCSI device owns or may access the interface. This page is not available on the SCSI
interface.
Parameters Savable (PS) - This page is not savable, and this field is set to zero.
Page Code - This field identifies the Disconnect-Reconnect mode page and returns 02h.
Parameter List Length - This field is set to 0Eh (14).
Buffer Full Ratio – This field indicates how full the buffer will be (during read operations) prior to requesting
an interconnect tenancy. A value of 0 is returned to indicate that requests for an interconnect tenancy are
consistent with the Disconnect Time Limit field.
Buffer Empty Ratio – This field indicates how empty the buffer will be (during write operations) prior to
requesting an interconnect tenancy (request for the initiator to send data). A value of 0 is returned to indicate
that requests for an interconnect tenancy are consistent with the Disconnect Time Limit field.
Bus Inactivity Limit – This field indicates the maximum time limit allowed for maintaining an interconnect
tenancy without any data or information transfer. A value of 0 is returned to indicate that there is no bus
inactivity limit.
Disconnect Time Limit – This field indicates the minimum wait time between interconnect tenancies. A
value of 0 is returned to indicate that there is no disconnect time limit.
Table 37 Disconnect-Reconnect Page (02h)
Bit
Byte
76543210
0 PS Rsvd Page Code (02h)
1 Parameter List Length = 0Eh
2 Buffer Full Ratio
3 Buffer Empty Ratio
4
Bus Inactivity Limit
5
6
Disconnect Time Limit
7
8
Connect Time Limit
9
10
Maximum Burst Size
11
12 EMDP Fair Arbitration DIMM DTDC
13 Reserved
14
First Burst Size
15