Both drives have been tested for no bad sectors or redirected sectors.
WESTERN DIGITAL PURPLE SURVEILLANCE 10 TB WD101PURZ SATA 6Gb/s
Western Digital WD101KRYZ 10 TB Gold Enterprise Hard Disk Drive - fully tested
WESTERN DIGITAL WD800B008-RNN EXTERNAL HARD DRIVE 80GB +2 Western Digital WD5000
Western Digital WD Blue WD5000AZLX 500 GB 3.5" SATA III Hard Drive
Western Digital WD Blue WD5000AAKX 500 GB SATA III 3.5 in Hard Drive
Western Digital WD Purple 2TB Hard Drive HDD for DVR NVR Security Camera CCTV
