Need SCSI guru's advice

JingYen

Member
Apr 27, 2002
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I recently purchased a Compaq 72.8 GB 10K rpm drive (part # 176494-b21) that is capable of Ultra160. I have a 39160 in my box, and it syncs another IBM 10K rpm (DDYS-T36950N) drive that I have at 160 mb/s perfectly. Now, the Compaq drive is SCA, and I purchased an adapter to 68 pin that 'claims' to be capable of Ultra3 (160 mb/s), but so far, I've noticed that the drive peaks at 40 mb/s.

Further, if I put both of my 10K rpms on the same channel, they both bottleneck at 40 mb/s. I also tried switching cables, thinking that my cable had gone bad, but still, it peaks at 40 mb/s.

Is it common to have a converter that doesn't support u160, or do I have a faulty drive? Thanks in advance.
 

bozo1

Diamond Member
May 21, 2001
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Is it common to have a converter that doesn't support u160
Yes. I've come across many that 'claim' to support u160 but don't. You might also want to check and make sure the drive isn't jumpered for SE mode.