Product manual

Byte 5 The maximum prefetch multiplier field always contains the
same value as byte 9 of the Caching page. The initiator
cannot directly change this byte.
Byte 6 The
minimum prefetch field always contains the same value
as byte 7 of the Caching page. The initiator cannot directly
change this byte.
Byte 7 The
minimum prefetch multiplier field always contains the
same value as byte 7 of the Caching page. The initiator
cannot directly change this byte.
Byte 8–15 Reserved.
ST3655 Family SCSI Drives Product Manual, Rev. A 111