Must all drives in a SATA 3 drive RAID 5 array be indentical in size/mfr/pns??

For instance I have 2 80G Seagate drives and add a 120G Western Digital and then create a RAID 5 array. Will it work? If not, what issues will pop up? Thanks!

Update:

Please document your sources. Thanks!

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  • 1 decade ago
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    Speed has to match. The array won't work if the speed of the hard drives isn't the same. Another thing is the connecter. 2 sata hard drives won't work with one ide 133 hard drive. Even if all of your hard drives match in speed, the connectors you attach them to will slow them down proportionatly.

    The size doesn't matter as much, but it is still important if you are going to be putting more than 80 gb onto the array. For instance, since you will have 2 80gb hard drives and 1 120gb hard drive, you have to keep your disk usage under 80gb.

    Source(s): Many years of computers
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  • 1 decade ago

    I'm pretty sure the speed needs to match. As far as the size, it's not required. When the controller builds the array, it determines the size of each drive, does the striping based on the smallest one. So if you have one small drive, that's how big of use the rest are going to us. Left-over space will be empty.

    I'm fairly sure the same goes for speed. The slowest drive will determine overall speed.

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  • 1 decade ago

    if u really want a raid u allready have the answers, but u know what raid means 4 ur data. u will have data on both of ur hdd. if u lost one u lost more that u will desire. speed is nt everything

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  • 4 years ago

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  • 1 decade ago

    On the latest sata chipsets ......dont need to be identical.

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