WD AV-25 WD2500BUCT 250 GB Hard Drive, 2.5" Internal, SATA (SATA/300)

Key Features and Benefits:

• 24 x 7 reliability
  These drives are designed to last in always-on streaming digital audio/video environments such as DVR/PVR, digital video surveillance and other demanding multimedia applications.
• Advanced format technology
  Leading edge technology delivers improved video quality and AV performance through enhanced error correction capability.
• SilkStream technology
  Optimized for smooth, continuous digital video playback of up to five simultaneous HD streams. SilkStream is compatible with the ATA streaming command set so AV customers can use standard streaming management and error recovery options.
• Ultra-cool operation
  A cool drives is a more reliable drive. WD continues to develop new and innovative ways to keep drives cool while they are operating.
• Quiet
  Noise levels have been minimized to less than one sone - virtually below the threshold of human hearing.
• Low power consumption
  The drive draws less than 2 Watts while operating and a mere 4.75 Watts during spin up.
• 1 million hours MTTF (MTBF)
  Best-in-class reliability for small-form factor AV storage.
• Preemptive Wear Leveling (PWL)
  The drive arm frequently sweeps across the disk to reduce uneven wear on the drive surface common to audio video streaming applications.