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Gopiichand
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Storage allocation

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i am learner so i want to know,if  50 gb storage request coming from windows server at first time.i want to apply RAID5 for the server.raid 5 needs maximum 3 disks.so i think one disk is enough for storage allocation.how the data stores in the disks?

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tomarnamki
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Re: Storage allocation

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RAID 5 needs a minimum of 3 disks. Considering a 3 disk RAID 5 configuration .....

RAID 5 stripes data across 2 disks in the RAID set and writes parity on the third disk. Parity is distributed across the 3 disks.

Full stripes are built into the write cache (write coalescing) and a parity is calculated for an entire stripe, provided there is enough sequential data in the cache to fill a stripe. Both data (stripe) and parity are written to the disks in a single operation (no write penalty).

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tomarnamki
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Re: Storage allocation

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RAID 5 needs a minimum of 3 disks. Considering a 3 disk RAID 5 configuration .....

RAID 5 stripes data across 2 disks in the RAID set and writes parity on the third disk. Parity is distributed across the 3 disks.

Full stripes are built into the write cache (write coalescing) and a parity is calculated for an entire stripe, provided there is enough sequential data in the cache to fill a stripe. Both data (stripe) and parity are written to the disks in a single operation (no write penalty).