On Dec 1, 2006, at 10:17 PM, Ian Collins wrote:
Chad Leigh -- Shire.Net LLC wrote:So you trust your important data to a single drive? I doubt it. But IOn Dec 1, 2006, at 4:34 PM, Dana H. Myers wrote:Chad Leigh -- Shire.Net LLC wrote:And this is different from any other storage system, how? (ie, JBODcontrollers and disks can also have subtle bugs that corrupt data)Of course, but there isn't the expectation of data reliability with aJBOD that there is with some RAID configurations.There is not? People buy disk drives and expect them to corrupt their data? I expect the drives I buy to work fine (knowing that there could be bugs etc in them, the same as with my RAID systems).bet you do trust your data to a hardware RAID array.
Yes, but not because I expect a single drive to be more error prone (versus total failure). Total drive failure on a single disk loses all your data. But we are not talking total failure, we are talking errors that corrupt data. I buy individual drives with the expectation that they are designed to be error free and are error free for the most part and I do not expect a RAID array to be more robust in this regard (after all, the RAID is made up of a bunch of single drives).
Some people on this list think that the RAID arrays are more likely to corrupt your data than JBOD (both with ZFS on top, for example, a ZFS mirror of 2 raid arrays or a JBOD mirror or raidz). There is no proof of this or even reasonable hypothetical explanation for this that I have seen presented.
Chad
Ian
--- Chad Leigh -- Shire.Net LLC Your Web App and Email hosting provider chad at shire.net
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