Seagate IronWolf 12TB 3.5" 5900 RPM SATA Hard Drive

Seagate IronWolf 12TB 3.5-inch mechanical hard drive, 5900 RPM, SATA III 6Gb/s. NAS CMR class drive designed for 24/7 NAS operation with vibration compensation. Seller note: mechanical drives are graded on SMART data — always report power-on hours, reallocated sector count and whether the drive is CMR or SMR, as buyers building NAS arrays will not accept SMR drives. Pack hard drives in anti-static bags with rigid foam; shock damage in transit is the most common cause of returns.