Article ID: 3510, created on Dec 20, 2007, last review on Apr 16, 2012

  • Applies to:
  • Virtuozzo for Windows 3.5.1 SP1


VE backup fails with the following error:

#2502 SWAHaulControlOperator with id 'swabackup_serializer' stage 'MakeImageBack up' failed : Error:458756; Write error;


This issue was fixed in Virtuozzo update 35154. Please run Virtuozzo Update Wizard and install Virtuozzo updates up to VZU35154


Once update is installed but the issue still takes place please do the following:

1. Check if there is enough disk space on backup location

2. Try to change MaxWiteSize value in the registry:


MaxWriteSize REG_DWORD 0x8000  (or 0x4000, or 0x1000)

DWORD, size in bytes,  (0 for unlimited or >= 0x1000 for limit)

Recommended values: 0x8000, if it does not help, than 0x4000 , then 0x1000

The lower value might decrease performance (backup speed), but it will increase backup success rate.

1348db476c8a5844ffbef8d503db9c15 965b49118115a610e93635d21c5694a8 d02f9caf3e11b191a38179103495106f 2897d76d56d2010f4e3a28f864d69223

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