Raid 10 with 2 Hot Spare or Raid 50?

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Draken8er

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Nov 29, 2013
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Hey!
I am new to this forum page, hoping someone here can help me with my issue.

I have a Dell PowerEdge 1900, It has 6 500GB SAS drives running at 7.2k RPMS. I'm wondering what would be better for redundancy and performance. I am thinking of running a RAID 10 with 2 hot spare drives or running a RAID 50 array. Please let me know what you think would be better for performance and redundancy. I am planning on using this server as a web server to host my website. I want the best redundancy i could get with 6 drives. But i also want something that could write at a decent speed also. Please let me know what you think would be best. Or what other RAID array you would recommend? On the server is shows I could run a RAID 0, RAID 1, RAID 5, RAID 10 and RAID 50.
Thanks!
 
Solution
popatim
Well raid 10 would certainly write at decent speeds but with 2 hot spares out of 6 drives total you will have 1TB of available space total with raid10.

Raid 5 would give higher read speeds but lower writes even with 5 drives in the raid and 1 Hot.

I think your best bet, out of the options given, is raid50, reads and write would be a bit higher than the raid 5 but the write would be a bit slower than the raid10. Purchase a spare disk for when one fails.


Considered a 3 array raid 10 and no hot spares? ie - raid0 together the three pairs of raid1's. again purchase a spare drive and store it nearby.
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popatim

popatim

Titan
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Dec 2, 2009
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Well raid 10 would certainly write at decent speeds but with 2 hot spares out of 6 drives total you will have 1TB of available space total with raid10.

Raid 5 would give higher read speeds but lower writes even with 5 drives in the raid and 1 Hot.

I think your best bet, out of the options given, is raid50, reads and write would be a bit higher than the raid 5 but the write would be a bit slower than the raid10. Purchase a spare disk for when one fails.


Considered a 3 array raid 10 and no hot spares? ie - raid0 together the three pairs of raid1's. again purchase a spare drive and store it nearby.
 
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