I built a storage server to run the Bacula storage daemon on. My plan
was to boot of a usb key then to use the four 2TB sata disks that are in
the server as a softraid raid 5 volume. The server in question is a dell
poweredge R310, i3 CPU 540 @ 3.07GHz with OBSD 5.0 amd64.
I put the OS onto the usb key but the softraid 5 volume seemed realy
slow. Sftping files over the local network to the servers softraid
volume was taking ages. So as I was short of time I just rebuilt the
server installing OBSD into one of the sata disks wd0
Later I connect to the server and made a raid5 volume on the remaining
three disks but the speed was really slow to I tried a raid1 on two of
the disks and that works fine speed wise.
I've tried to get some stats to figure out what's going on
raid 5 (wd1, wd2,wd3) Time for newfs command to complete = 1 min 14 secs
raid 5 (wd1, wd2,wd3) Time to copy 2.3G file from wd0 onto the softraid5
disk = 5 mins ish
raid 1 (wd1, wd2) = 1.8TB Time for newfs command to complete = 4 secs
raid 1 (wd1, wd2) copy 2.3G Time to copy 2.3G file from wd0 onto
softraid disk = 25 secs
As this point I though I'd try raid0 but the server went and hung for
some reason.
#bioctl -d sd0
#bioctl -c 0 -l /dev/wd2a,/dev/wd3a softraid0 < It hung on this
command.... Won't know what happed till I get to the datacenter.
Idealy I wanted one large disk but if can't get a quick raid5 working I
will just use two softraid raid 1 disks and work around it. Does anyone
have any suggestions ?
Thanks
Keith
