Dell EMC Unity: Filesystem offline with error "substituteMappingInIndBlk: incorrect BMD weight" (Dell EMC Correctable)

Summary: Filesystem offline with error "substituteMappingInIndBlk: incorrect BMD weight" SymptomCode: neo14:600f4

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



A customers Unity Array may call home and report a filesystem offline condition.
Customer's production services may be impacted as a result.

Clarify Id: 
Vendor: 
DeviceType: Unity
Model: 
SerialNumber: 
EmbedLevel: 1
InternalMaxSize: 0
Ucode_Ver: 
IP_Address: Not Available
ConnectNum: UDoctorKH01.40

SymptomCode: neo14:600f4
Category: status
Severity: Critical
Status: Failed
Component: Health
FirstTime: 
LastTime: 
CDATA:
Device: spa
<CustomerContactInfo>
<CustomerInfo>
<admin>
<admin_email>
<admin_name>
<admin_number>
</admin>
<company>
<company_address>
</company_address>
<company_name>
</company>
</CustomerInfo>
</CustomerContactInfo>



Description:
File system XXXXXX is offline.

Cause

The issue is Filesystem goes offline with freeing free block error, this is the meta space of the lower deck file system.

Resolution

Please contact Dell EMC Customer Service And request immediate recovery assistance if your Filesystem is offline.

Permanent Fix:
  • The issue is fixed in 5.0.2.0.5.009 code. After recovery please upgrade to 5.0.2.0.5.009 or later to have the fix and prevent reoccurrence.
Workaround:
  • There is no workaround for this problem.

    Affected Products

    Dell EMC Unity Family

    Products

    Dell EMC Unity Family
    Article Properties
    Article Number: 000063263
    Article Type: Solution
    Last Modified: 18 Apr 2026
    Version:  4
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