The Western Digital Caviar Green WD15EADS is a 1.5 TB hard disk. MSRP $199.00.

  • WD15EADS-00P8B0
  • SATA 3Gb/s
  • 32 MB RAM buffer
  • 110 MBps
  • S.M.A.R.T.
  • 1 error per 1015
  • 4096 bytes per sector
  • perpendicular media recording
  • 3.5″ desktop hard disk
  • 4″ by 1″ standard hard disk format
  • 6W seek power maximum
  • 15 seconds drive ready

Low power spin-up – WD Caviar Green drives consume less current during startup allowing lower peak loads. Advanced power technology – Electronic components deliver best-in-class low power consumption for reduced power requirements and increased reliability.

The new Advanced Format for the WD Green lineup support 4K sectors. The change is necessary to improve the error correction employed. Windows 7 supports the new advanced format with 4K sectors. Windows Vista SP2 also supports the 4K sectors.

The larger number of sectors on a track was unwieldy which 4K affords better block sizes for Solomon-Reed recovery code with embedded processors. Faster embedded processors can handle the advanced recovery effectively.

The WD WD15EADS is best as a secondary data disk in a JBOD type setup. The disk is not suitable for use in a file server or a NAS

A lot of reported problems are related to using Windows XP which does not support the 4K sector format. Vista users also reported serious performance issues. Windows 7 handles the disk more effectively.