HGST LS21 for model number(s) HUH721008AL5200, HUH721008AL4200, HUH721010AL5200 and HUH721010AL4200.

This update will not run if any of the following conditions exist
1. Any Virtual Disk that is not optimal.
2. A RAID container that is performing a Background Initialization or Consistency Check.
3. A Rebuild, Resync, or copyback function is taking place.
4. A RAID set that is Partially Degraded or in a Degraded state.

This update will run on drives remaining in a RAID set that is in a Offline state.

There is an architectural constraint with Dell DUP HDD firmware update utility, related to system memory utilization, which is typically encountered on systems with minimal system memory, memory-intensive configurations, multiple RAID controllers, or memory-intensive applications. This issue is typically reported as - The operation was not successful because the device buffer write has failed. And will result in an aborted attempt to update firmware on the identified HDD. Error codes associated with this failure mode include 8009 and 8017. Once an error is detected, the update session is aborted. There is no data integrity or data availability risk associated with this issue. Subsequent attempts to update the HDD firmware may succeed, particularly if system resources are freed up.

Dell Update Package instructions for Windows Dup:

1. Click the "Download Now" link to download the file.
2. When the File Download window appears, click "Save" to save the file to your hard drive.
Installation
1. Browse to the location where you downloaded the file and double-click the new file.
2. Read over the release information presented in the dialog window.
3. Download and install any prerequisites identified in the dialog window before proceeding.
5. Click the Install button.
6. Follow the remaining prompts to perform the update.

Dell Update Package instructions for Linux DUP (RHEL/SLES/Ubuntu):

1. Click the "Download Now" link to download the file.
2. When the File Download window appears, click "Save" to save the file to your hard drive.
Installation
1. Browse to the location where you downloaded the file and run the update by executing
"./ SAS_Firmware__LN__A00.BIN " from the shell.
2. Read over the release information presented in the dialog window.
3. Download and install any prerequisites identified in the dialog window before proceeding.
5. Click the Install button.
6. Follow the remaining prompts to perform the update.

GnuPG Signature of Dell Update Package Instructions:

Download the latest GnuPG Signature of Dell Update Package from support.dell.com.

1. Browse to the location where you downloaded the file.
2. Read over the release information presented in the dialog window.
Installation
1. Import the Dell public key. (You only need to do this once on your system.)
2. Verify the Dell Update Package by using its signature file, SAS_Firmware__LN__A00.BIN.sign.