Re: disk fails in raid5 but not in raid0

2001-03-20 Thread Mike Black
I'll post the same thing to this list that I sent to the original poster -- seems many people aren't aware of the limitation on how many devices you can put on an ultra-wide and the impact on max cable length: From http://www.ramelectronics.net/html/scsi_help.html If five devices are used (four

Re: disk fails in raid5 but not in raid0

2001-03-20 Thread Per Jessen
On Tue, 20 Mar 2001 07:06:04 +1100 (EST), Neil Brown wrote: [snip] Any suggestions ? I would like to confirm whether or whether not the drive has a problem. Try re-arranging the drives on the scsi chain. If the questionable one is currently furthest from the host-adapter, make it closest.

disk fails in raid5 but not in raid0

2001-03-19 Thread Per Jessen
Hi, I have a RAID setup, 3 Compaq 4Gb drives running of an Adaptec2940UW. Kernel 2.2.18 with RAID-patches etc. I have been trying out various options, doing some stress-testing etc., and I have now arrived at the following situation that I cannot explain: when running the 3 drives in a RAID5

Re: disk fails in raid5 but not in raid0

2001-03-19 Thread Neil Brown
On Monday March 19, [EMAIL PROTECTED] wrote: Hi, I have a RAID setup, 3 Compaq 4Gb drives running of an Adaptec2940UW. Kernel 2.2.18 with RAID-patches etc. I have been trying out various options, doing some stress-testing etc., and I have now arrived at the following situation that I

Re: disk fails in raid5 but not in raid0

2001-03-19 Thread Max TenEyck Woodbury
Per Jessen wrote: I have a RAID setup, 3 Compaq 4Gb drives running of an Adaptec2940UW. Kernel 2.2.18 with RAID-patches etc. I have been trying out various options, doing some stress-testing etc., and I have now arrived at the following situation that I cannot explain: when running the