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  1. #1

    Which Raid type do you prefer for cloud hosting

    I use RAID10 for my dedicated servers and it works fine. When going into the cloud, do you still recommend RAID10 or is there better solution for maximum redundancy and data storage security ?
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  2. #2
    Raid 10 offers the best performance and excellent redundancy. I could see some use cases going for raid 6 for added redundancy at the expense of poor performance. Raid 5 is generally a bad option unless storage is at a huge premium and you don't mind the lousy performance.
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  3. #3
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    Raid5 has its uses especially in high performance SSD environments
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  4. #4
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    I would never go for Raid 5 especially for vps/cloud.

    Stick to Raid 10.

    Specially 4 U
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  5. #5
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    Raid 50 is another option.

    With modern high end arrays even raid5 is very performant.

    Don't forget that raid10 will be a bit faster but at the cost of HALF your storage raw capacity

    If performance at all cost is higher priority than cost effectiveness then it's the way to go.
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  6. #6
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    We use a triple mirrored setup offered by the Storage Spaces stack for our scale out file servers.

    Sure the write performance is going to suffer, but read IOPs are considerably faster since the stack stripes reads across the mirrored volumes.
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  7. #7
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    raid is old school now, take a look at ceph, glusterfs, parallels nfs, amazon s3, cloud base storage replicate object/data chunks to multiple server to speed up replication, improve parallels performance, improve redundancy and speed up data rebuilt time.

    Raid is just too slow in cloud environment.
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  8. #8
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    Quote Originally Posted by PittLoh View Post
    raid is old school now, take a look at ceph, glusterfs, parallels nfs, amazon s3, cloud base storage replicate object/data chunks to multiple server to speed up replication, improve parallels performance, improve redundancy and speed up data rebuilt time.

    Raid is just too slow in cloud environment.

    and don't forget ZFS!
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  9. #9
    If you are using your on dedicated hardware for your Cloud Environment I would definitely stay away from RAID 5. RAID 10 is the simple solution. As someone previously mentioned Ceph storage is now being supported and utilized. That being said you have to have at least a 3 server(3 Hypervisor) solution. No RAID is needed and you can use local storage on the Hypervisors cutting out the SAN.
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  10. #10
    Ceph storage is good option.
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  11. #11
    We've been having good luck with LizardFS in our private cloud, it's a fork of MooseFS. Not affiliated, just a happy user.
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  12. #12
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    I prefer to stick to heroic 20 man raids.

    :-)

    (raid10 btw, always, unless it's for backups, raid6)
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  13. #13
    If you plan to have more write operations, choose RAID10.
    However, if there will be more read operations, use RAID5.
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