different logical block size or protection information added). The primary goal of a format is the configuration of the disk at the end of a format (e.g. ![]() Sg_format (from sg3-utils package) formats, resizes or modifies protection information of a SCSI disk. However since it is relative new and optional, not all SCSI drives support SANITIZE command Sanitize is more likely to be implemented on modern disks (including SSDs) than FORMAT UNIT’s security initialization feature and in some cases much faster. Sg_sanitize (from sg3-utils package) removes all user data from disk with SCSI SANITIZE command. Hdparm works well with SATA drives, but it can brick a USB drive if it doesn’t support SAT (SCSI-ATA Command Translation). Hdparm can be used to issue ATA instruction of Secure Erase or enhanced secure erase to a disk. Scrub supports almost all drives including SATA, SAS, USB and so on. ![]() Scrub iteratively writes patterns on files or disk devices to make retrieving the data more difficult. ![]() Below table includes description for different tools. If “tool” is not specified in payload, “scrub” is used as default. RackHD currently supports disk secure erase with four tools: scrub, hdparm, sg_sanitize, sg_format.
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