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Theo

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Extend my raid?

I have a Raid 5 with 4 160 gb hd's. The size limits are in sight, so it is time to switch to larger disks. But how? I'd prefer to replace the 160 gb disks one by one bij 1 tb disks (of course allow each of them to mount). Is that a good idea?

Thanks

TR
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btassure
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What is running the RAID? Hardware or software?
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Theo

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Yes you're right. It is a Promise raid card. Hardware.
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Thanks. I must say that the Raid has functioned without flaws for 5 years, but I remember that people warned me even then for these kind of raids. Well I just needed to hear this, so thanks. I'll buy a regular hardware raid (for Sata cause SAS I cannot afford).
You could still get an SAS controller, they are backward compatible to SATA drives. Also, an absolute must is to get enterprise class disks.
Do a full bare-metal backup, build the new raid on replacement disks & restore.
Any other technique risks 100% data loss.  Murphy's laws and all of that.  Remember, these disks are old, and they may not survive the stress of 8 full rebuilds.

Besides, by doing it this way, if for some reason the restore doesn't work, you still have your original data.