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RAID recovery

Home / Extras / ZAR 8.4 Manual / Advanced configuration / RAID reconstruction options

RAID array reconstruction options

	When detecting stripe size and member disk ordering, use (either "doublets" or "triplets").

	ZAR uses two kinds of patterns to detect RAID parameters - "doublets" and "triplets". "Doublets" are shorter and encountered more often. However, they are less reliable than longer, rarely encountered "triplets". "Doublets" tend to produce more false positives for the algorithm to cope with. Per gigabyte of typical volume, 10 to 20 "triplets" are typically found, which is quite enough to determine the array layout. The same amount of data probably contains about a hundred of "doublets", half of which are misleading. Larger the array, less the need for (and value of) "doublets". Default setting ("triplets") should be used for any array containing more than five gigabytes worth of data.

	Use NTFS MFT entries, if any.

	With this option enabled, ZAR will take into account any MFT entries found on the volume. Leave it enabled as per default settings, unless the RAID reconstruction is very slow (possible with an extremely large array, containing more than a million of files and/or directories).

	Enable RCRD bias

	This should be enabled unless the array reconstruction fails and any of the following conditions is met The filesystem on the array is NTFS formatted to FAT or vice versa (i.e. fragments for both filesystem types are on the array). The filesystem on the array is NTFS version 1.2 (volume formatted by Windows NT 4.0).

<< Image recovery options Advanced configuration S.M.A.R.T. options >>

ZAR Tip: Enjoy your cocktails in the meanwhile.

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Sounds good, but it didn't identify my camera as a drive. I use an Olympus C740UZ with an XD picture card, and Windows XP. Windows reads the camera as removeable disk E: but ZA failed to pick it up. I tried all the different processes suggested by ZA help, without success. Shame, because all the other reviews suggest it's a nice little bit of software. Try it anyway, you've got nothing to lose.

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