If you are buying "Used" or "Pull" DAMOS 800GB drives (common in the secondary market), ensure they have been low-level formatted to 512-byte sectors. Some enterprise drives come formatted for 520 or 528 bytes (used by NetApp or EMC) and will not work in standard servers.
Option 1: The "Ultimate Resource" (Professional/Forum Style) damos 800gb
Essential for finding hidden switches (ASR, Lambda, DTC) that standard map packs often miss. If you are buying "Used" or "Pull" DAMOS