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Security Hard Drives

Security Certified HDD

Lorex Digital Video Recorders (DVR) and Integrated systems ship with internal hard disk drives (HDD). Lorex uses security certified HDDs from Seagate that have been specifically designed for use in the security market. These hard drives are not standard HDDs that you might use in standard personal computers.

What does "security certified" mean?

Security certified hard drives are especially designed to meet the demands of a security environment, including constant operation and simultaneous recording and playback from various streams. Security certified HDDs deliver high quality performance, efficiency, and reliability.


  • 24/7 Duty Cycle
    Security certified hard drives undergo strict testing to ensure operation 24-hours a day, 7 days a week. Standard PC hard drives are only tested for 8/5 operation. With a security certified hard drive, you have the peace of mind that your hard drive will stand up to the rigorous demands of 24/7 operation.
  • High Temperature Tolerance
    Up to 70° C case temperature tolerance. The improved slimmer case helps to increase airflow which helps keep your system cooler.
  • Firmware
    The firmware in the drives is designed to record video streams from multiple sources. The drives are able to deliver high resolution video streaming and recording simultaneously, ensuring the highest functionality of your security system.
  • Sequential Writing
    Standard PC drives write data to any location on the disk. Security hard drives are designed to write data to the disk sequentially. Sequential writing /file transfers produces less mechanical movement and more efficient operation.


  • SATA interface
    All drives feature a SATA interface for high transfer rates and lower power consumption.
  • Less power consumption
    The hard disk requires less spin than common desktop PC hard drives. This results in more efficient power supplies that run cooler and require less power (60% faster from power-on to ready, 29% lower operating power), which extends the life of the drive and saves you money.


  • Acoustics
    Reduced vibration in security certified HDDs allows for "Bedroom quiet" operation. The hard drives are quiet enough to be used in a bedroom, baby’s room, or other silent environments.
  • Flexibility
    If your security needs require extensive data mirroring and backup, security certified drives are also optimized for HDD array environments (RAID/JBOD).


  • Greater durability
    Security certified drives have an MTBF rating (Mean Time Between Failure) of >1 million hours and an annualized failure rate of less than 1%. That means the drives have a mean operating time longer than standard PC drives, and less than 1% of security drives will fail in one year.
  • Large Cache
    A higher cache allows for faster writes and requires less mechanical movement, which extends the life of the hard drive.
  • 5-Year Warranty
    Industry leading limited 5-year end-user warranty.


Security and PC hard drives are usually identified as SATA or PATA. SATA and PATA refer to the type of interface the hard drive employs to transfer data and draw power.

SATA Drives

SATA stands for Serial Advanced Technology Attachment. SATA drives use easy to connect data and power cables with increased data transfer rates. SATA drives have supplanted older PATA drives throughout the computer and security industry.

Advantages over PATA

The biggest advantage of SATA drives is the high rate of data transfer. Early SATA drives had transfer rates of only 110 MB/sec.—a marginal increase over PATA. Modern SATA drives can transfer data up to 140 MB/sec.
Other advantages of SATA:

  • SATA drives use a 7-pin data cable and power cable
  • The cables are easy to connect and can only connect one way
  • SATA drives consume far less power than PATA drives
  • Narrower cable width (7 pins wide) and up to 1 meter in length

PATA Drives

PATA stands for Parallel Advanced Technology Attachment. These drives are also known as ATA drives, IDE, or EIDE drives. They were renamed to PATA drives with the introduction of SATA drives.

PATA was the standard interface for computer hard drives until the emergence of the SATA interface in 2003. PATA drives used wide, bulky cables that restricted airflow around the drive.

Disadvantages of PATA compared to SATA:

  • Bulky cables ("Ribbon cables," usually 40 pins wide)
  • Slower data transfer rates than SATA: 100 MB/sec.
  • Higher power consumption (minimum 5V)
  • Use jumpers to set the operating mode (master, slave)

Last Updated: 4/17/2012