Re: RAID5 slowness (how to fix?)

On Mon, 24 Apr 2006 12:23:49 -0400, David Stuart wrote:

Hello,

I have recently setup a RAID-5 (software) for some data that my company
frequently uses.

Unfortunately, it is extremely slow! Backups of the data are taking
roughly 11 hours. Is there any way for me to speed this up? What should I
be looking into?

Thanks in advance,
David


Just thought that it might be worth mentioning:

I have 3 IDE drives in this raid configuration (4 drives in total). They
are all currently NOT on separate IDE channels (meaning, they are
master/slave, master/slave). I read somewhere this might not be a "Good
Thing" (tm). Could it be causing my performance degredation?

Also, I noticed just about an hour ago that (for some reason) the drives
do not seem to have DMA enabled. I have turned that on now but am unsure
as to the degree of impact this might have.


.

Relevant Pages

  • Re: Compressing huge files
    ... Would the Mac user suffer in any way with such a lashup? ... only supports internal drives. ... one compressed version of my 60 GB Vista ... of the whole image chain of backups, ...
    (comp.sys.mac.system)
  • Re: OT: Hardware speed gen. Q. ?
    ... zero difference to the schedulers that run the backups. ... that's why I have 3 internal drives. ... do you admin ANY networks? ...
    (microsoft.public.windowsxp.general)
  • Re: OT: Hardware speed gen. Q. ?
    ... I have 3 hard drives on this workstation. ... I also have 3 external drives that I create monthly backups ... than the risk of losing all internal drives to your "common ...
    (microsoft.public.windowsxp.general)
  • Re: Advice Requested : Disaster Recovery with 2 Drives (No Raid) with SQL Server 2008
    ... so we need frequent copies of the database for testing, ... Andrew J. Kelly SQL MVP ... But by placing the backups on the same drive as the data or logs you risk loosing data if one of the drives crashes since you will loose backups and either the log or data files. ...
    (microsoft.public.sqlserver.programming)
  • Re: Reminder: Back up your data
    ... Do *not* rely on these drives for backups or storage! ... There's utilities to clone drives under Windows too but I don't know ... Windows: The Windows task scheduler needs a non-blank password on the user ...
    (alt.guitar)