Barracuda 7200.11 SATA models with firmware SD04 or SD14

A small number of Barracuda 7200.11 drives with firmware versions SD04 or SD14 may show and utilize only part of the available cache.  Please follow these steps to ensure that your system recognizes the full cache.

  1. Click here to be moved to the bottom of this page in order to determine your drive model number electronically.

    Below are the Barracuda 7200.11 model numbers.  If the orange digit is any number other than those shown, Seagate recommends that you update the firmware on your drive:

    Model numbers

    1000 GB (1 TB)

    750 GB

    500 GB


  2. If the drive bears one of the model numbers above then no action is required. If you do have an incorrect model number, please download SeaTools to determine your serial number.

  3. Once you have your serial number contact Seagate Support to receive the AD14 firmware update.

  • Firmware updates to disk drives should be approached with a measure of caution.  All important data should be fully backed up before performing the update.
  • If you choose not to update, the drive will have a slightly slower data transfer rate due to under utilizing the full cache buffer on the disk drive.

More information:

The product label will state the correct physical cache size. (i.e. ST31000340AS) however, the drive will functionally operate with the incorrect cache size value.  This incorrect value will be passed from the drive, via "Identify Drive" command to the system BIOS, which in turn will now recognize the incorrect cache size.

Seagate has since rectified the issue and would like to assure its customers that all its Barracuda 7200.11 hard drives have been correctly built to the cache size as specified on the product label. We would also like to reassure our customers that the performance and reliability of our Barracuda 7200.11 hard drives have not been compromised.

If the drive model number is reported correctly in the operating system (such as in Windows Disk Management), then no action is needed.  The drive is working normally. 

Identify your hard drive's model number:

Use Windows Device Manager to determine the model number as reported by your drive.

  1. Right click on My Computer and select Properties, select the Hardware tab, select Device Manager.

  2. Expand the Disk Drives tree and see the drive model numbers.  Seagate drive model numbers begin with ST3...

Use your System Setup (BIOS) to determine the model number as reported by your drive.

  1. RAID environments may not display disk drive model numbers in the Device Manager.  In these cases, you can usually view a System Setup screen with information about the disk drives.

How to determine the firmware level on your drive.

  1. Visually inspect the label.
    The label on the drive has a several small bar codes.  The fourth line says Firmware: followed by a 4-digit code.  This is the firmware revision from the factory.

  2. Or run SeaTools for Windows.
    (See Document ID: 202435 for a tutorial.)
    SeaTools for Windows requires Microsoft .NET Framework 2.0 or above.