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3 disks configured RAID 0 over 10 disks configured in RAID 5 (self replicating SAN) - Mailing list pgsql-admin

From Rene Romero Benavides
Subject 3 disks configured RAID 0 over 10 disks configured in RAID 5 (self replicating SAN)
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Msg-id CANaGW0_n86g5WAV4zEabYoSkg1GSdXT6CpYqtBsN2NMr==rG8g@mail.gmail.com
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Responses Re: 3 disks configured RAID 0 over 10 disks configured in RAID 5 (self replicating SAN)  (Scott Marlowe <scott.marlowe@gmail.com>)
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Thanks for your attention.
What would you choose for a postgresql installation: 3 disks configured with RAID 0 (in a self replicating SAN) over 10 disks configured with RAID 5 (also in a self replicating SAN) , we have space constraints that prohibit us from choosing RAID 1+0.
I've been persuaded to choose RAID 5, because writes and parity computation will be spread over 10 disks compensating write overhead providing a better level of data security. 

Do you think it was a good decision? Any comment will be appreciated. Have a good day.

--
El genio es 1% inspiración y 99% transpiración.
Thomas Alva Edison
http://pglearn.blogspot.mx/

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