John R Pierce wrote:
On 5/31/2017 8:04 AM, m.roth@5-cent.us wrote:
I've got an old RAID that I attached to a box. LSI card, and the RAID has 12 drives, for a total RAID size of 9.1TB, I think. I started shred /dev/sda the Friday before last... and it's still running. Is this reasonable for it to be taking this long...?
not at all surprising, as that raid sounds like its built with older slower drives.
It's maybe from '09 or '10. I *think* they're 1TB (which would make sense, given the size of what I remember of the RAID).
I would discombobulate the raid, turn it into 12 discrete drives, and use
Well, shred's already been running for this long... <snip>
unless that volume has data that requires military level destruction, where upon the proper method is to run the drives through a grinder so they are metal filings. the old DoD multipass erasure specification is long obsolete and was never that great.
If I had realized it would run this long, I would have used DBAN.... For single drives, I do, and choose DoD 5220.22-M (seven passes), which is *way* overkill these days... but I sign my name to a certificate that gets stuck on the outside of the server, meaning I, personally, am responsible for the sanitization of the drive(s).
And I work for a US federal contractor[1][2]
mark
1. I do not speak for my employer, the US federal government agency I work at, nor, as my late wife put it, the view out my window (if I had a window). 2. I'm with the government, and I'm here to help you. (Actually, civilian sector, so yes, I am.