I read How to prepare your hard disks
and How to prepare a Hard Disk whilst installed in a Synology NAS
and the procedures described seem overly complex to me.
Mapping bad sectors before use is critical, but preventing forensic data recovery is optional. You can use a drive-wiping program to accomplish both at the same time, but not by filling every sector with zeros. You have to use a pattern set specifically designed for that purpose
which could require three, seven, or even more passes over the entire surface of the disk to secure it against recovery.
I just ordered the DS209j and 2 x WD10EADS for a RAID 1 setup. When it's delivered, I'm going to be in the situation where I have to prepare the drives using the NAS itself. In my case, I don't need to wipe the drive but I do
need to map the bad sectors.
Why can't I use mkfs.ext3 to prepare the drives instead?
from mkfs.ext3(8) - Linux man page
:mkfs -c : Check the device for bad blocks before creating the file system. If this option is specified twice, then a slower, read-write test is used instead of a fast read-only test.
If the NAS uses the -cc option to format the drives, then I need do nothing because the bad sectors will be mapped during the initial setup.
If it doesn't, manually formatting the drives using -cc would be the fastest and easiest way to get the bad blocks taken care of, and I could wipe the drive after I have an idea of how long each pass will take.
Has anyone done this, or can anyone provide ideas or advice, or is there something I've overlooked?
Thanks in advance!