cm@jet.uucp (colin manning) (04/23/91)
Having recently obtained a 486 EISA machine with a 1740 EISA SCSI controller, I was informed by the sales people that ISC 2.2.1 and SCO Unix 3.2.2 do not have drivers that use this card in its fastest 'EISA/enhanced' mode. They say that these Unix's drive the 1740 in its '1540 compatibility mode', which they say would be about 5% slower than a dedicated 1740 driver, were one to exist. They also inform me that with a SCSI-2 drive coupled with the 1740 (which handles SCSI-2 I think), that you DONT get any performance improvement over SCSI-1. Is this correct ? Also, if your SCSI drive handles synchronous transfers, will you get higher performance with something like a 1740 under ISC or SCO ? Many thanks in advance. -- - Colin Manning, cm%jet.uucp@ukc.ac.uk (world) OR cm@jet.uucp (UK only) - Disclaimer: Please note that the above is a personal view and should not be construed as an official comment from the JET project.