Bunch of SAS disk and want to wipe all of them
Solution 1:
You need a SAS HBA. Then use sg_sanitize from sg3_utils package. Examples:
Simple erase:
sg_sanitize --block /dev/sdX
Overwrite with given pattern:
sg_sanitize --overwrite --pattern=rand.img /dev/sdX
If you only have a RAID controller, than you can create a RAID volume and just fill it with zeroes or some random pattern (see scrub).