/Storage/Seat disk exhaustion alert has been triggered on vCenter.

Products

• VMware vCenter Server

Issue/Introduction

1.  On Vcenter appliance /storage/seat partition is reaching its capacity limit.

2. vCenter for storage utilization, we observed that the /storage/seat partition is over 75% usage indicating  approaching critical levels.

Environment

VMware Vcenter 7.X
VMware Vcenter 8.X

Cause

In the vCenter Appliance Management Interface (VAMI), we verified that Hard Disk 8 is allocated to the SEAT partition.

The /storage/seat partition is responsible for storing historical events, alarms, and tasks within vCenter. Over time, as the vCenter database continues to log data, storage consumption gradually increases.

If this partition reaches full capacity, it can lead to performance degradation or even potential service disruptions within vCenter.

Resolution

• Please follow the recommended steps below to resolve the issue.

  Step 1: Pre-Maintenance Precautions

  1. Since vCenter is in Enhanced Linked Mode, take an offline snapshot of the linked vCenter instance (not the problematic vCenter).
  2. This is necessary because extending a disk is not possible if a snapshot exists on the affected vCenter.

  Step 2: Disk Expansion

  • Access the ESXi Host where the problematic vCenter VM resides.
  • Gracefully power off the affected vCenter appliance.
  • Extend Hard Disk 8 from 10GB to 15GB through the ESXi UI 
  • Select the virtual machine and go to actions> Edit settings
  • On the Hardware tab, select the virtual hard disk(hard disk 8) to expand.
  • Set the new size for the virtual disk.
  • Click OK.
  • Commit the disk expansion successfully.
  • Power on the vCenter appliance.

  Step 3: Partition Expansion :

     After the virtual disk is increased, return to the SSH session and run this command to automatically expand any logical volumes for which the physical volumes are increased:
  
          /usr/lib/applmgmt/support/scripts/autogrow.sh
         Reference KB :Increasing the disk space for the vCenter Server Appliance in vSphere 6.5, 6.7, 7.0 and 8.0