Benchmarking hardware RAID vs. Linux kernel software RAID
Posted by: Anonymous
[ip: 192.88.212.43]
on July 15, 2008 02:46 PM
I appreciate the work you did, but I have to mention that I was dissappointed that you used such a high-end configuration to test and used raw disk tests instead of application based performance. While your setup is impressive, it is not typical of most Linux users experience. I would like to see the test done with a less expensive RAID card (Yes I know the difference may be subtle, but most users aren't spending $800 on a RAID card), with only 3 drives for RAID 5 and only 2 drives for RAID 1, which is more than likely what the common Linux user is looking at.
Keep in mind that RAID is not just for fileservers these days, plenty of hosts are using it for their webserver, or database server. I would like to see real world performance implications when running say, software raid vs. hardware raid on a database server, where the extra CPU usage from the software raid array is no longer negligible.
Regardless of this, thank you for the excellent article on a touchy subject. I know many admins on either side of the fence, and your article seemed fair and unbiased.
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Benchmarking hardware RAID vs. Linux kernel software RAID
Posted by: Anonymous [ip: 192.88.212.43] on July 15, 2008 02:46 PMKeep in mind that RAID is not just for fileservers these days, plenty of hosts are using it for their webserver, or database server. I would like to see real world performance implications when running say, software raid vs. hardware raid on a database server, where the extra CPU usage from the software raid array is no longer negligible.
Regardless of this, thank you for the excellent article on a touchy subject. I know many admins on either side of the fence, and your article seemed fair and unbiased.
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