bit-tech.net — Have you been interested in RAID, but wondered what it's all about? Do you have one, and think your RAID array is helping your speeds? This article from bit-tech.net takes a look at how RAID works, they types, and demystifies some of the real performance benefits.
Jun 11, 2007 View in Crawl 4
rambleJun 12, 2007
Why not? RAID 5 is great for database applications. Dpending on the importance RAID 6 may be better.
resta6Jun 13, 2007
so which raid is best for a server with a lot of read/writing going on?
blackoperJun 13, 2007
One thing I have to disagree with in the article is that Linux kernels seem to have no problem keeping up with hardware controllers at least with raid 5 and video/tv/archive/fileserver use with only a handful of concurrent connections. Speeds were roughly the same and very little overhead. I have two raid 5's and a raid 0 array on my server. 12 active drives with two hotspares.Also I'd put a dedicated openfiler server with raid 5 going through pci-express interfaces (port multipliers, etc) up against a much more expensive hardware/commercial solution all day long.
blackoperJun 13, 2007
raid 0 that is raid 1'd for data protection, or a very good raid 5 solution. I'd have both use 15K rpm drives, preferably of the scsi u320 variety or fiber channel if it's enterprise/business class data. If I had to use a sata solution I'd get the sata 2 raptors.
rastarJun 13, 2007
A better review with actual benchmarks<a class="user" href="http://www.anandtech.com/showdoc.aspx?i=2101&p=10">http://www.anandtech.com/showdoc.aspx?i=2101&p=10</a>
waffelsJun 18, 2007
i've always been to lazy to go and find outjz for myself what the pros and cons of using raid exactly were....now i know, very good article, concise and comprehensive !thanks