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Forum Discussion
How to securely wipe your ReadyNAS
Hi there, Since I saw a lot of people here on the forum asking the same question; how can I securely erase, delete, wipe my hard disk before selling, RMA etc and all the suggestions led to one gene...
RAIDar has secure erase built in (certainly with sparc platforms, and I think the others). It requires 4.1.7 or later firmware. Note sure if it uses 35-pass Gutmann or some other over-writing method.
Note that the 35-pass Gutmann method referenced in the wiki link is no longer viewed as the best method. Simple scrubbing with random data is really about the best you can do with over-writing on a modern disk. You can theoretically do better with a degausser, however that makes the disk unusable.
Since 2001, most ATA/SATA drives have included secure erase commands. There is a freeware utility you can download, though it requires a DOS boot disk to use it. (http://www.zdnet.com/blog/storage/how-t ... -drive/129 , and http://cmrr.ucsd.edu/people/Hughes/SecureErase.shtml). It runs quite a bit faster than normal over-write software, and is more secure.
Note that the 35-pass Gutmann method referenced in the wiki link is no longer viewed as the best method. Simple scrubbing with random data is really about the best you can do with over-writing on a modern disk. You can theoretically do better with a degausser, however that makes the disk unusable.
Since 2001, most ATA/SATA drives have included secure erase commands. There is a freeware utility you can download, though it requires a DOS boot disk to use it. (http://www.zdnet.com/blog/storage/how-t ... -drive/129 , and http://cmrr.ucsd.edu/people/Hughes/SecureErase.shtml). It runs quite a bit faster than normal over-write software, and is more secure.
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