Although the performance is important the more critical feature is to "guarantee complete dd for the disk".
Alan From: Oleg Gelbukh [mailto:ogelb...@mirantis.com] Sent: January-16-14 5:21 AM To: OpenStack Development Mailing List (not for usage questions) Subject: Re: [openstack-dev] [ironic] Disk Eraser On Wed, Jan 15, 2014 at 10:25 PM, Alan Kavanagh <alan.kavan...@ericsson.com<mailto:alan.kavan...@ericsson.com>> wrote: Cheers Guys So what would you recommend Oleg. Yes its for linux system. Alan, Approach proposed below (/dev/zero) is probably better as it allows to perform at around 60MB/s. Another approach that I've seen flying around is to generate random string and use it's hashes for dd. There are some one-liners out there which do that with openssl, just one example: openssl enc -aes-256-ctr -pass pass:"$(dd if=/dev/urandom bs=128 count=1 2>/dev/null | base64)" -nosalt < /dev/zero > randomfile.bin Hope this helps. -- Best regards, Oleg Gelbukh /Alan From: Oleg Gelbukh [mailto:ogelb...@mirantis.com<mailto:ogelb...@mirantis.com>] Sent: January-15-14 10:30 AM To: OpenStack Development Mailing List (not for usage questions) Subject: Re: [openstack-dev] [ironic] Disk Eraser On Wed, Jan 15, 2014 at 6:42 PM, Alexei Kornienko <alexei.kornie...@gmail.com<mailto:alexei.kornie...@gmail.com>> wrote: If you are working on linux system following can help you: dd if=/dev/urandom of=/dev/sda bs=4k I would not recommend that as /dev/urandom is real slow (10-15 MB/s). -- Best regards, Oleg Gelbukh :) Best Regards, On 01/15/2014 04:31 PM, Alan Kavanagh wrote: Hi fellow OpenStackers Does anyone have any recommendations on open source tools for disk erasure/data destruction software. I have so far looked at DBAN and disk scrubber and was wondering if ironic team have some better recommendations? BR Alan _______________________________________________ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org<mailto:OpenStack-dev@lists.openstack.org> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev _______________________________________________ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org<mailto:OpenStack-dev@lists.openstack.org> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev _______________________________________________ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org<mailto:OpenStack-dev@lists.openstack.org> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
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