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Erase drives

I have an old HP ML150 server which is no longer used.  The operating system is Small Business Server 2003.
What inexpensive (or free) software can be used to erase the data on the drives?
5 Solutions
Olaf De CeusterCommented:
Delpart does a great job.
Try a boot cd from DBAN: http://sourceforge.net/projects/dban/
First break the RAID, set drives as individual.
This way you will securely wipe the whole hard drive, instead of a simple partition delete where data might still be recovered from the disk.
Cliff GaliherCommented:
How sensitive is the data? For most businesses, I don't recommend software. Most communities now have a shredding business that shreds sensitive paper documents, and most of THOSE now shred and recycle drives. Worth it. Or you can find a company that specializes in drive wiping as one of their services. I invested in a digital wipe device (can wipe areas of the drive protected by computer BIOSes so software is not as effective) to wipe drives for my clients as a value-add service if they upgrade through me.

Regardless, modern drives and recovery techniques. Software just isn't reliable for any but the most casual "who cares" data, in which case not worth the effort to wipe at all.
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I've never seen a study that says wiping a drive via software isn't effective.  The latest information I read has said that a single overwrite pass is sufficient.  However, I do acknowledge that software overwriting can miss some areas of the hard drive, such as re-allocated sectors.  Erasing a SATA drive by implementing the built-in Secure Erase function however will wipe all sectors, and this applies to SSD drives as well.  This doesn't help with SCSI or SAS drives though.  Most servers employ SAS (formerly SCSI) drives.  Any bits missed by software wiping are likely to be quite small on a functioning drive.  As such I would say that software techniques are sufficient for all but the most sensitive information.

But is is true that physically mulching the drive is the most surefire method of destroying the data.  Hardware devices that wipe a drive or degauss it are a close second.
If you rewrite disk with zeroes some enemy needs quite some money to get data back

Internal drive wipe (like HP system erase utility may or ma completely)ay not wipe dat
donpickAuthor Commented:
Thank you all for your quick responses.  I appreciate your help.
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