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ankurs
Joined: 10 Mar 2009
Posts: 515
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 Posted: Jul 16, 2010 6:06 am Post subject: raid 6 |
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| anyone here using hardware raid 6 ? how is the performance |
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ankurs
Joined: 10 Mar 2009
Posts: 515
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| Posted: Jul 19, 2010 10:12 am Post subject: |
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| hmm seems no1 is using raid6 ; what do you guys use ? raid10 or just raid5 |
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PilgrimX182
Joined: 22 Mar 2006
Posts: 2109
Location: UFO Lab
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ankurs
Joined: 10 Mar 2009
Posts: 515
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| Posted: Jul 19, 2010 11:43 am Post subject: |
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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. |
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mrperl
Joined: 06 Mar 2010
Posts: 65
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| Posted: Aug 23, 2010 7:31 am Post subject: Re: raid 6 |
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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- RAID5 is obsolete, use RAID6 if possible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 |
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sherayusuf3
Joined: 18 Jan 2009
Posts: 88
Location: Jakarta Indonesia
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| Posted: Sep 01, 2010 2:00 pm Post subject: |
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| 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
Joined: 22 Mar 2006
Posts: 2109
Location: UFO Lab
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| Posted: Sep 03, 2010 6:31 am Post subject: |
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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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