fredex@cg-atla.UUCP (Fred Smith) (11/28/89)
Does anybody out there know anything about the specs on the Maxtor XT-1140 harrd diskdrive? I know it is good sized and relatively fast, but I don't know if it is ST506 or SCSI or what, or how many surfaces/cylinders, whether write precomp is needed, etc. If anybody has this information would you please post or mailto me?? Thanks! Fred Smith uunet!samsung!cg-atla!fredex
rogers@SRC.Honeywell.COM (Brynn Rogers) (11/29/89)
In article <8091@cg-atla.UUCP> fredex@cg-atla.UUCP (Fred Smith) writes: >Does anybody out there know anything about the specs on the Maxtor XT-1140 >harrd diskdrive? I know it is good sized and relatively fast, but I don't >know if it is ST506 or SCSI or what, or how many surfaces/cylinders, >whether write precomp is needed, etc. >Fred Smith >uunet!samsung!cg-atla!fredex a Maxtor xt-1140 is ST506 compatible and it's specs are: model cylinders heads precomp Lzone formatted space xt-1140 918 15 none 1023 120 Meg MFM, 180 Meg RLL xt-1240 1024 15 none 1023 138 Meg MFM, 204 Meg RLL xt-2190 1224 15 none 1223 160 Meg MFM, 240 Meg RLL Often you can get a 1140 to format as a 1240 for a few extra megs. I have never heard of a Maxtor that did not work RLL reliably. My 1140 is formatted RLL as a 1240 giving me 204 Meg. I have heard that you can get a 1140 to format as a 2190, but I tried with mine and was unable to get it to work. If I really needed the 36 more megabytes, I may have tried harder. Average access times are all about 26-28 ms, with the bigger drives being a tad slower. With a WD1006-VSR2 1:1 interleave RLL controller I get a 550 Kbytes/sec transfer rate. With the WD1003-MM? 2:1 MFM controller I had for a while (And now I don't trust that board in a computer with an IO bus faster than 8 Mhz) I got 150 Kbytes/sec. I have never had a disk crash since changeing to RLL (3 months ago), while I had them weekly with the MFM controller. I now am pretty certain that the WD1003 controller was the culprit, because when I took it out of my 10 Mhz DTK AT clone (with a 10 Mhz IO bus) and put it into a clone that has a 12 Mhz IO bus, the controller did not work at all. I suspect that the WD1003 would work fine with the 8Mhz bus it was designed for. Note that the WD1006 (MFM or RLL) series is rated to work on a 16Mhz IO bus, and seems to take care of all bus speed problems associated with some clones. Brynn Brynn Rogers Honeywell S&RC rogers@src.honeywell.com home 612 874-7737