“VDDK Error: 1”

KB ID: 1901
Product: Veeam Backup & Replication
Version: 6.x, 7.x, 8.x, 9.x
Published:
Last Modified: 2016-12-08

Challenge

Job fails with error containing “VDDK error: 1.Unknown error”.

Cause

This issue occurs when too many performance counters are being registered on the ESXi hosts vpxa process causing the process to run out of memory.

Solution

According to VMware KB 2144799, this issue is resolved in ESXi 5.5 Patch 08 and ESXi 6.0 Patch 03

If upgrade is not an immediate option, the KB also outlines a workaround that does not persist through reboot.

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