Parallel to my veeam-case (Case # 02031171) I opened a case with HP. I got following statement of a level-2 engineer related to "Random backup failures on Veeam Backups with the following error: OSCLT_ERR_SERVER_OFFLINE. Err: -1404:"
HP: "The backup failures seen are a known issue that is fixed in 3.15.1 , so the recommendation is to upgrade the device firmware to the latest – 3.15.1 ." ...what we did last week. And it worked.
Kai - how often are you getting the OSCLT error? I seem to get it maybe once every other week.