Need Suggestions for Automated Backup

[Matthew Carpenter]

----- Original Message ----- 
From: "Net Llama!" <netllama at linux-sxs.org>
To: <linux-users at linux-sxs.org>
Sent: Tuesday, December 02, 2003 10:50 AM
Subject: Re: Need Suggestions for Automated Backup


> Its worth noting that RAID5 is generally alot slower than RAID0 or RAID1.

That's not been my experience.  Using hardware RAID at least, RAID1 is much
slower than RAID5.  RAID0 doesn't count since it is only used for speed and
doesn't provide data-protection.  In that way, RAID0 is a misnomer.
RAID1 is a mirror, so the data is being written and read much like a
standalone drive, assuming you have a separate controller for each drive.
If both drives are on the same controller RAID1 is even worse.  RAID5
spreads the data out so reads are (can be) much quicker than a RAID1 as
multiple tracks can be read at virtually the same time.  Writing is similar.

I'm not sure how SW RAID5 compares to SW RAID1.