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04-15-2014, 07:12 PM #1Web Hosting Evangelist
- Join Date
- Feb 2004
- Posts
- 491
best practice to wipe a disk array before returning server?
What is the current best practice to wipe a soft raid mdadm disk array before returning it to the host?
Don't trust them to do it right before recycling the hardware.
is hdparm --secure-erase possible on a running system, to affect each individual drive in the soft raid?
I know the dd /dev/zero trick used to be the most popular
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04-16-2014, 12:46 AM #2Web Hosting Master
- Join Date
- Oct 2007
- Posts
- 2,349
Hi,
hdparm --security-erase is faster than dd and puts less load on the system
Alternatively, you can also use "mdadm --zero-superblock devicepath" and then verify it by "mdadm -E devicepath"
However, the security of hdparm --secure-erase, it depends on what nature of the RAID is on your disk. Is the RAID a part of OS installation, then doing so will not be possible. You got to have the server in single user mode to do this, as doing so will wipe out the current OS too and if those drives are not part of the active OS installation, then you can have the unmount and clean it.www.24x7servermanagement.com
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