Krausse Martin
Guest
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 Posted:
Fri Oct 07, 2005 8:15 am Post subject:
General Question to RAID 5 |
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Hello, I'm a new user of this newsgroup.
How can tell me, how a RAID 5 knows, that a hard disk drive is
or goes failure? Because, to recover Data with parity checksum, you
must know, what number of hdd is failure!
I don't find any useful information in the www.
Does a RAID System checks the SMART Informations of a HDD
or does he reads out ERROR Register?
Thanks
Martin Krausse |
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Anton Rang
Guest
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| Posted:
Mon Oct 10, 2005 4:16 pm Post subject:
Re: General Question to RAID 5 |
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Krausse Martin <krausse_martin@freenet.de> writes:
| Quote: | How can tell me, how a RAID 5 knows, that a hard disk drive is
or goes failure? Because, to recover Data with parity checksum, you
must know, what number of hdd is failure!
I don't find any useful information in the www.
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Try searching for the original RAID papers.
| Quote: | Does a RAID System checks the SMART Informations of a HDD
or does he reads out ERROR Register?
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No, it just tries to read from all the data disks needed for a given
transaction, and if one fails, treats that disk as failed. (It may
try to repair the stripe before assuming total failure.)
-- Anton |
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