Brand Seagate , Model ST20000NM002H SATA 6Gb/s, Capacity 20TB, Standard Model- Seagate Instant Secure Erase (ISE) 1 ST20000NM002H FEATURES: Helium Sealed-Drive Design Yes, Conventional Magnetic Recording (CMR) Yes, Protection Information (T10 DIF) Super Parity Yes, Low Halogen Yes, PowerChoiceTM Idle Power Technology Yes, PowerBalanceTM Power/Performance Technology Yes, Hot-Plug Support1 Yes, Cache, Multisegmented (MB) 512, Organic Solderability Preservative Yes, RSA 3072 Firmware Verification (SD and D) Yes, RELIABILITY/DATA INTEGRITY Mean Time Between Failures (MTBF, hours) 2500000hr, Reliability Rating at Full 247 Operation (AFR) 0.35%, Nonrecoverable Read Errors per Bits Read