Failed to write block. Error code "665"

StarWind VTL, VTL Free, VTL Appliance

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Ardelan
Posts: 2
Joined: Wed Jan 26, 2022 7:55 am

Wed Jan 26, 2022 8:02 am

Good morning,

I am useing starwind VTL on a server 2019.

I have a VM with server 2012R2 with DPM, everything works fine except 1 (large, around 6 tb) backup to tape does not work.

After a couple of TB i get this error in DPM 30101 Data error Cyclic redudancy check 0x80070017.

At the same time the following error occurs in VTL:

UID 2068 CODE 4355 Description VTL Device VTL2: TAPE 'xxx" Failed to write block. Error code '665'

Now i am trying the following regfix on the DPM: HKLM\SOFTWARE\Microsoft\Microsoft Data Protection Manager\Agent BufferQueueSize 5 and the backup is running.

In the meanwhile i am open to other suggestions, if the bufferQueueSize regfix fails.

Kind regards
yaroslav (staff)
Staff
Posts: 2340
Joined: Mon Nov 18, 2019 11:11 am

Wed Jan 26, 2022 1:07 pm

Greetings,

Could we kindly have the logs, please? Use log collector to collect them https://knowledgebase.starwindsoftware. ... collector/. Share them with SharePoint or any other convenient tool.
Ardelan
Posts: 2
Joined: Wed Jan 26, 2022 7:55 am

Thu Jan 27, 2022 7:44 am

I have send the link to logs in a PM
yaroslav (staff)
Staff
Posts: 2340
Joined: Mon Nov 18, 2019 11:11 am

Mon Jan 31, 2022 9:37 am

Greetings,

Please consider updating VTL and VSAN to the latest build and reconnecting the tapes over iSCSI. Also make sure to split the tape in parts so that each part is 1 TB. If updating does not help, please send me the logs again and log a call with us at support@starwind.com
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