raid 6

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ankurs
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raid 6

#1 Postby ankurs » Jul 16, 2010 6:06 am

anyone here using hardware raid 6 ? how is the performance

ankurs
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#2 Postby ankurs » Jul 19, 2010 10:12 am

hmm seems no1 is using raid6 ; what do you guys use ? raid10 or just raid5

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PilgrimX182
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#3 Postby PilgrimX182 » Jul 19, 2010 11:11 am

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

ankurs
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#4 Postby ankurs » Jul 19, 2010 11:43 am

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


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.

mrperl
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Re: raid 6

#5 Postby mrperl » Aug 23, 2010 7:31 am

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- RAID5 is obsolete, use RAID6 if possible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

sherayusuf3
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#6 Postby sherayusuf3 » Sep 01, 2010 2:00 pm

i just using raid1 for my storage, cause my file sharing is free, maybe i will use raid 10 for premium account,.. thnks for sharing

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PilgrimX182
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#7 Postby PilgrimX182 » Sep 03, 2010 6:31 am

If Raid1 (Raid10) is too costly, then Raid6 could be the solution, but only starting from 6 HDDs in one raid.

Raid 5 is DO NOT USE :)

And avoid Promise raid controllers :)


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