PowerEdge: Toshiba MG08 and MG09 Firmware Issue Causes Drive Unresponsiveness

Summary: Dell PowerEdge Toshiba MG08 and MG09 hard drives may encounter uninterruptible Background Media Scanning (BMS), causing I/O errors, or timeouts.

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
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Symptoms

Observed Drive Errors Across Multiple PowerEdge Installations.

  • Background Media Scanning (BMS) becoming uninterruptible, leading to drive unresponsiveness.
  • I/O errors observed during normal operation.
  • Host‑initiated timeouts, including a 12‑second timeout value

 

Cause

Firmware Issue Leading to Uninterruptible Background Media Scanning (BMS)

The root cause is a defect in the Toshiba MG08/ MG09 firmware that allows the BMS routine to become uninterruptible. When BMS resumes after an idle period, subsequent host media‑access commands are no longer able to suspend the scan, causing the drive to remain busy until the system‑wide 12‑second timeout expires.

 

    Affected Firmware Revisions

    Product Firmware
    MG08 Air SAS EL01
    MG08 Air SATA GE01
    MG09 SAS EM05 and earlier
    MG09 SATA GF07 and earlier

    Resolution

    Update firmware on Toshiba MG08 and MG09 drives at the earliest available opportunity to avoid impact to data. 

    Caution: Perform firmware updates during a scheduled maintenance window. Ensure that all data is fully backed up, as a power loss during the update can render the drive inoperable.

    Importance:
    Urgent:
    Dell Technologies highly recommends applying this important update as soon as possible. The update contains critical issue fixes and changes to improve the functionality, reliability, and stability of your Dell system. It may also include security fixes and other feature enhancements.

    The minimum firmware versions in which this issue is resolved are listed below: 

     

    Family Drive Part Number Capacity Fixed FW P/N

    Fixed FW Revision

    FW Release Date
    MG08 Air SAS  NJWMG 8 TB F95CX EL02 October 20, 2025
    MG08 Air SATA T5XR5 8 TB 65CDF GE02 October 20, 2025
    MG09 SAS 0N96X 12 TB 20Y02 EM06 December 02, 2025
    MG09 SAS MXC46 16 TB 20Y02 EM06 December 02, 2025
    MG09 SAS HKR0D 18 TB 20Y02 EM06 December 02, 2025
    MG09 SATA 5C2XG 12 TB KMTGF GF08 December 02, 2025
    MG09 SATA WNXKJ 16 TB KMTGF GF08 December 02, 2025
    MG09 SATA MN6V8 18 TB KMTGF GF08 December 02, 2025

     

    Affected Products

    Dell EMC XC Core XC450, Dell EMC XC Core XC750, Dell EMC XC Core XC750xa, Dell XC6320 Hyper-converged Appliance, Dell XC Core XC760, Dell XC Core XC760xa, Storage Spaces Direct R640 Ready Node, Storage Spaces Direct R740xd Ready Node , Storage Spaces Direct R740xd2 Ready node, OEMR XL R470, OEMR XL R570, OEMR R210II, OEMR R210, OEMR R220, OEMR R230, OEMR R240, OEMR R260, OEMR XE R260, OEMR R320, OEMR R330, OEMR R340, OEMR R350, OEMR XE R350, OEMR R360, OEMR XE R360, OEMR R430, OEMR R440, OEMR R450, OEMR R520, OEMR R530, OEMR R540, OEMR R550, OEMR R5500, OEMR R630, OEMR R640, OEMR XL R640, OEMR R6415, OEMR R6515, OEMR R6525, OEMR R660, OEMR XL R660, OEMR R660xs, OEMR R6615, OEMR R6625, OEMR R720, OEMR R720xd, OEMR R730, OEMR R730xd, OEMR R740, OEMR XL R740, OEMR R740xd, OEMR XL R740xd, OEMR R740xd2, OEMR R7415, OEMR R7425, OEMR R750, OEMR R750xa, OEMR R750xs, OEMR R7515, OEMR R7525, OEMR R760, OEMR R760xa, OEMR R760XD2, OEMR XL R760, OEMR R760xs, OEMR R7615, OEMR R7625, OEMR T130, OEMR T150, OEMR T330, OEMR T340, OEMR T350, OEMR T360, OEMR T430, OEMR T440, OEMR T550, OEMR T560, OEMR T630, OEMR T640, OEMR XL T640, OEMR XL R210, OEMR XL R210II, OEMR XL R220, OEMR XL R230, OEMR XL R240, OEMR XL R330, OEMR XL R340, OEMR XL R520, OEMR XL R630, OEMR XL R660xs, OEMR XL R6615, OEMR XL R6625, OEMR XL R6715, OEMR XL R6725, OEMR XL R720, OEMR XL R720xd, OEMR XL R730, OEMR XL R730XD, OEMR XL R760xs, OEMR XL R7615, OEMR XL R7625, OEMR XL R7715, OEMR XL R7725, Poweredge C4140, PowerEdge c6320, PowerEdge c6320p, PowerEdge C6400, PowerEdge C6420, PowerEdge C6525, PowerEdge HS5610, PowerEdge HS5620, PowerEdge R210, PowerEdge R210 II, PowerEdge R220, PowerEdge R230, PowerEdge R240, PowerEdge R260, PowerEdge R320, PowerEdge R330, PowerEdge R340, PowerEdge R350, PowerEdge R360, PowerEdge R415, PowerEdge R420XR, PowerEdge R430, PowerEdge R440, PowerEdge R450, PowerEdge R470, PowerEdge R515, PowerEdge R520, PowerEdge R530, PowerEdge R530xd, PowerEdge R540, PowerEdge R550, PowerEdge R570, PowerEdge R630, PowerEdge R640, PowerEdge R6415, PowerEdge R6515, PowerEdge R6525, PowerEdge R660, PowerEdge R660xs, PowerEdge R6615, PowerEdge R6625, PowerEdge R6715, PowerEdge R6725, PowerEdge R720, PowerEdge R720XD, PowerEdge R730, PowerEdge R730xd, PowerEdge R740, PowerEdge R740XD, PowerEdge R740XD2, PowerEdge R7415, PowerEdge R7425, PowerEdge R750, PowerEdge R750XA, PowerEdge R750xs, PowerEdge R7515, PowerEdge R7525, PowerEdge R760, PowerEdge R760XA, PowerEdge R760xd2, PowerEdge R760xs, PowerEdge R7615, PowerEdge R7625, PowerEdge R7715, PowerEdge R7725, PowerEdge R7725xd, PowerEdge T110, PowerEdge T110 II, PowerEdge T130, PowerEdge T150, PowerEdge T160, PowerEdge T330, PowerEdge T340, PowerEdge T360, PowerEdge T430, PowerEdge T440, PowerEdge T550, PowerEdge T560, PowerEdge T630, PowerEdge T640, PowerFlex appliance R6525, PowerFlex appliance R660, PowerFlex appliance R6625, Powerflex appliance R750, PowerFlex appliance R760, PowerFlex appliance R7625, PowerFlex custom node R6525, PowerFlex custom node R660, PowerFlex custom node R6625, PowerFlex custom node R750, PowerFlex custom node R760, PowerFlex custom node R7625, VxFlex Ready Node R640, VxFlex Ready Node R740xd, Dell EMC vSAN C6420 Ready Node, Dell EMC vSAN R440 Ready Node, Dell EMC vSAN R640 Ready Node, Dell EMC vSAN R6415 Ready Node, Dell EMC vSAN R6515 Ready Node, vSAN Ready Node R660, Dell vSAN R6615 Ready Node, Dell vSAN R6715 Ready Node, Dell EMC vSAN R740 Ready Node, Dell EMC vSAN R740xd Ready Node, Dell EMC vSAN R750 Ready Node, Dell EMC vSAN R7515 Ready Node, Dell EMC vSAN R760 Ready Node, Dell vSAN R7615 Ready Node, Dell vSAN Ready Node R7625, Dell vSAN R7715 Ready Node, Dell vSAN R7725 Ready Node, Dell EMC vSAN T350 Ready Node, PowerFlex appliance R640, PowerFlex appliance R740XD, PowerFlex appliance R7525, VxRail S570 VCF, VxRail S670, Dell EMC XC Core XC7525 ...
    Article Properties
    Article Number: 000381662
    Article Type: Solution
    Last Modified: 28 Oct 2025
    Version:  1
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