BugZero | VMware vCenter BugID b5cb670cd36b - vSphere Storage DRS might stop load balancing due ...

VMware vCenter - Defect ID: b5cb670cd36b

vSphere Storage DRS might stop load balancing due to an I/O reservation computation issue

VMware vCenter - Defect ID: b5cb670cd36b

vSphere Storage DRS might stop load balancing due to an I/O reservation computation issue

Last updated on December 22nd, 2025

BugZero Risk Score
0.0 Coming soon

Overall: N/A

Severity: N/A

Community: N/A

Lifecycle: N/A

What is the BugZero Risk Score?

VMware vCenter Integration

Learn more about where this data comes from

VMware vCenter Integration

Learn more

Bug Scrub Advisor

Streamline upgrades with automated vendor bug scrubs

Bug Scrub Advisor

Learn more

BugZero Enterprise

Wish you caught this bug sooner? Get proactive today.

BugZero Enterprise

Learn more

Bug Details

Status: Resolved
Impact Category: Virtual Machine Management Issues
Workaround Available:
Views: 1

Description

Disclaimer

A custom bug ID has been generated as the vendor did not provide one: b5cb670cd36b

Overview

In rare cases, vSphere Storage DRS might stop load balancing due to an I/O reservation computation issue. For example, if some VMs in a storage cluster have storage I/O reservations, vSphere Storage DRS might fail to balance the storage cluster and throw an error such as The available storage IOPs capacity is not sufficient for the operation . This issue is resolved in this release. The manual workaround is to set the vSphere Storage DRS advanced option EnforceIOReservations to 0 .

Bug URLs

https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere/8-0/release-notes/vcenter-server-update-and-patch-release-notes/vsphere-vcenter-server-80b-release-notes.html

Change history

2025-11-05 changed to Resolved

Top VMware vCenter Defects

Defect ID: PR-3026630
You see error messages when try to stage vSphere Lifecycle Manager Images on ESXi hosts of version earlier than 8.0
Defect ID: f24a2d043b60
A remediation task by using vSphere Lifecycle Manager might intermittently fail on ESXi hosts with DPUs
Defect ID: PR-3434710
After upgrading to vSphere 8.0 Update 3, Single Sign-On (SSO) users in Azure Active Directory groups get a "namespaces is forbidden" error when using kubectl
Defect ID: PR-3565605
The syslog configuration for the Workspace ONE Access service points to a wrong directory referring the former name VMware Identity Manager
Defect ID: PR-3417930
A fresh install of vCenter by using the CLI installer might fail due to a rare race condition

Ready to prevent the next vendor outage?

Get a demo

VMware vCenter - Defect ID: b5cb670cd36b

vSphere Storage DRS might stop load balancing due to an I/O reservation computation issue

VMware vCenter - Defect ID: b5cb670cd36b

vSphere Storage DRS might stop load balancing due to an I/O reservation computation issue

Last updated on December 22nd, 2025

BugZero Risk Score0.0 Coming soon

Bug Details

Disclaimer

Overview

Bug URLs

Links

Top VMware vCenter Defects

Ready to prevent the next vendor outage?

BugZero Risk Score
0.0 Coming soon