5/20/2023 0 Comments Free killdisk usb bootSSDs will need to use the ATA Secure Erase command since the wear-levelling systems cannot guarantee you overwrite every sector (the sectors are moved around by the controller). To go even more basic or paranoid, a suitable wipe on HDDs can be accomplished by dd'ing /dev/zero onto the block device from a live environment. I DBAN'd six disks at once on a PowerEdge. Keep the disks somewhere secure until they can be wiped. If you're intending to re-use some of the drives, set them to one side and use a tool such as DBAN, which can automatically wipe all disks attached to a chassis with a lot of SATA connectors. * EDIT: added 10% calculation for new drives, as per /u/catwiesel notice. Still half a year, but at least this is something cheap. more, much more time, from 15 minutes (drive is not even spinning up) to multiple hours (for a TB drives) per drive.īallpark estimate will be around half a year, and that if you will build a proper process.Īnother option is to sort the drives by capacity (why the fuck you will need a 40Gb, 15y/o drive in 2019?) which will leave a small subset of the drives, set a decommed desktop with a bunch of USB docks, run some diagnostic software on it, somehow make people to stuff the drives every morning and evening. Assuming there would be nuances, 1 month of work, 160 hours/month * $12 = $1920. $12-14, suppose he would do at least 8 in parallel, 1000 / 8 = 125 takes / 8 work day hours = 15.625 days. Time to wipe = from 1 hour? (need advice on it, the last time I did this it was when the drives were < 100Gb).ġ man-hour at. New drives are quite cheap, sorting, testing, wiping will probably be more expensive and then you still have a years old drive and not a new one.ġ000 drives * $50 (price of a 256Gb SSD or a ~2Tb HDD) = $50000ġ00 drives (at best, this will cover the replacement for another two-three years) * $50 = $5000 *
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