topic Re: EVA data erasure tools/commands in Disk Enclosures

EVA data erasure tools/commands

Lyndon Handy — Fri, 29 Sep 2006 16:50:51 GMT

We need to erase/shred all data on an EVA 5000 before it gets returned at end-of-lease. What tools/commands can be executed on the HSV110 controller or from CV EVA that will perform this function?
The erasure/shredding process needs to be certified for this purpose, ie. with DoD.

Obviously the best method would be to run a utility on the EVA controller itself, rather than have 30+ hosts all running their respective erasure processes against their LUNs.

thanks in advance.

Re: EVA data erasure tools/commands

Peter Mattei — Sat, 30 Sep 2006 10:54:49 GMT

There is no certified EVA based method to erase data.
Initializing the EVA will delete all mapping information. It will be almost impossible to reconstruct data contents since the blocks on the individual disk only contain small parts of LUNs.

But... data does not get erased that way!

So the only way will be overwriting the LUNs several times with different patterns using a certified software!

Cheers
Peter

Re: EVA data erasure tools/commands

chris callihan — Mon, 02 Oct 2006 12:15:13 GMT

if you are going to go host based, there is a FREE windows utility called ERASURE,
http://www.heidi.ie/eraser/
that includes the DoD 5220-22.M method
once production is complete, just take a spare server or two and mount all the volumes you need to wipe (i would would do a couple of LUNs at a time)

there is also a FREE linux utility, WIPE,
http://wipe.sourceforge.net/
but i do not think it has the DoD method

Re: EVA data erasure tools/commands

Novonil Choudhuri — Mon, 25 Jun 2007 23:50:23 GMT

Hi You can always write a small shell script something like this and run on all the VDISKs after presenting them to a perticular host.

for i in $i
>do
>dd if=/dev/zero of=/dev/dsk/c1t2di bs=1024
>done

You have to change the variables for c,t, and d for different controllers and targets.

dd command will erase all your data.