Re: RAID5 on athlon64 machines

2006-02-12 Thread soralx
Theoretically the sequential write rate should be same or higher than the sequential read rate. Given an N+1 disk Seq write rate for the whole RAID5 array will always be lower than the write rate for it's single disk. You compute max data rates by considering the most optimistic

Re: RAID5 on athlon64 machines

2006-02-12 Thread David Taylor
On Sun, 12 Feb 2006, [EMAIL PROTECTED] wrote: [missing attribution] You compute max data rates by considering the most optimistic scenario, which is large sequetial writes. For *this* situation write rate will be higher than a single disk's. How can the RAID5 write rate be higher for

Re: RAID5 on athlon64 machines

2006-02-12 Thread soralx
On Sun, 12 Feb 2006, [EMAIL PROTECTED] wrote: [missing attribution] You compute max data rates by considering the most optimistic scenario, which is large sequetial writes. For *this* situation write rate will be higher than a single disk's. How can the RAID5 write rate be higher

Re: RAID5 on athlon64 machines

2006-02-12 Thread Bakul Shah
You compute max data rates by considering the most optimistic scenario, which is large sequetial writes. For *this* situation write rate will be higher than a single disk's. How can the RAID5 write rate be higher for the whole array if not only it needs to write the data to all if its

RAID5 on athlon64 machines

2006-02-11 Thread Bakul Shah
I built an Asus A8N SLI Deluxe based system and installed FreeBSD-6.1-BETA1 on it. This works well enough. Now I am looking for a decent RAID5 solution. This motherboard has two SATA RAID controllers. But one does only RAID1. The other supports RAID5 but seems to require s/w assistance from

Re: RAID5 on athlon64 machines

2006-02-11 Thread soralx
Theoretically the sequential write rate should be same or higher than the sequential read rate. Given an N+1 disk Seq write rate for the whole RAID5 array will always be lower than the write rate for it's single disk. See 'http://en.wikipedia.org/wiki/RAID#RAID_5' Traditional RAID5 A1

Re: RAID5 on athlon64 machines

2006-02-11 Thread Bakul Shah
Theoretically the sequential write rate should be same or higher than the sequential read rate. Given an N+1 disk Seq write rate for the whole RAID5 array will always be lower than the write rate for it's single disk. You compute max data rates by considering the most optimistic