Christian Spoo wrote: > Hi, > > I need to set up a RAID box of about 470GB disk space accessible via > GBit LAN. > > The whole thing should have good performance but must be reliable as > well. Which RAID mode would you recommend, 5, 0+1 or maybe any other? > How about the time needed for rebuilding such arrays in case of disk > failure? > > > Thanks in advance, > > Christian Spoo > I work with about 10 systems that have RAID5 all have between 300GB and 1.5TB of space.
The slowest old systems with 3 or 4 disks IDE 200GB can rebuild raid5 at about 25MB/sec. Newer faster systems with 3 or 4 SATA 500GB disks can rebuild raid5 at about 60MB/sec. The RAID5 storage servers can always saturate a 100mbps LAN connection in my case. Doing a copy over a gbit LAN, of large multimedia files from one RAID5 to another RAID5 server over NFSv3, I see about 30MB/sec max. Sorry i don't have exact benchmarks to show you, only what I recall seeing in the last few months. For your needs, assuming you have to buy new disks, 2x 500GB disks in RAID1 and your done. -- -- Karl Hiramoto http://karl.hiramoto.org/ -- [email protected] mailing list
