XFileSharing Pro - raid 6
- PilgrimX182
- Posts: 2186
- Joined: Mar 22, 2006 1:39 pm
According to our last research I only can recommend RAID10.
Read this article for some info: http://www.cyberciti.biz/tips/raid5-vs- ... mance.html
Read this article for some info: http://www.cyberciti.biz/tips/raid5-vs- ... mance.html
I am currently using raid10, but it gives half disk size. So was looking for an alternative, i guess; i will stick with raid10 for now.PilgrimX182 wrote:According to our last research I only can recommend RAID10.
Read this article for some info: http://www.cyberciti.biz/tips/raid5-vs- ... mance.html
Re: raid 6
Pilgrim's link is correct as far as the facts go, and is a good intro for newbies.
Besides being a Perl expert, I am also a storage engineer.
Some observations:
- RAID5 is obsolete, use RAID6 if possible
- RAID5 and RAID6 may take too long to rebuild (weeks), so test your rebuild rate before going into production. Rebuild speed is controller and array dependent.
- either use drives inside your cpu case, or buy external arrays that cost more than USD$4,000 each. There is no cheap external array that actually works. The most cost-effective mass storage today is a 2U server with 6 or 8 drives.
- Tiered storage is very important. Ramdisk and SSD are essential in high IO applications. You cannot send a high volume of reads and writes to a storage array and expect good overall performance.
mrperl
Besides being a Perl expert, I am also a storage engineer.
Some observations:
- RAID5 is obsolete, use RAID6 if possible
- RAID5 and RAID6 may take too long to rebuild (weeks), so test your rebuild rate before going into production. Rebuild speed is controller and array dependent.
- either use drives inside your cpu case, or buy external arrays that cost more than USD$4,000 each. There is no cheap external array that actually works. The most cost-effective mass storage today is a 2U server with 6 or 8 drives.
- Tiered storage is very important. Ramdisk and SSD are essential in high IO applications. You cannot send a high volume of reads and writes to a storage array and expect good overall performance.
mrperl
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- Posts: 94
- Joined: Jan 18, 2009 4:29 am
- PilgrimX182
- Posts: 2186
- Joined: Mar 22, 2006 1:39 pm