Are the dangers of power failure / unclean shutdown only at hardware level or is write-back dangerous in unclean shutdowns / poweroffs at VM level too Write-back cache is dangerous when all hosts are unexpectedly shut down at the same time. At the VM level, unexpected shutdowns always have potentia...

I did my setup in that way ... only IPv4 on iSCSI and Sync NICs. If you are going in hyperconverged (storage and VMs on same machine), it would be necessary for shared links ... in a dedicated link, all that stuff can be removed: "MS Network Client", "File and Printing Share", &q...

Hi Treo, Just to be clear your suggestion is to either go back to Server 2016 and use TCP Chimney (which according to Microsoft is deprecated even for Server 2016) or use RDMA?? That's correct, TCP Chimney was deprecated on Windows Server 2016, disabled by default, but you still can enable it. In my...

Hi,

I faced the same situation, maybe it helps:

https://forums.starwindsoftware.com/vie ... deprecated

Wow, it's surprised me! I didn't hear any news about it ... Was there some official announcement? Actually, I don't use LSFS, but I intend to use async replication in the near future. I suppose that now the way to perform async replication wil be by Flat images + LWC, right? Or is it not supported t...

Hi

There currently is no native deduplication and compression in StarWind VSAN. Log Structured File System (LSFS) is not supported anymore.

Is that true? LSFS is not supported anymore?

Thank you Michael

Do I need to request a new license in order to upgrade from build 12767 to the latest one?

Hi folks, Yesterday (March 12, 2020) I had my first production issue using StarWind vSAN Free. I'm using vSAN servers (build 12767) on Hyper-V 2012 R2 FailoverCluster (2 storage and 3 computing servers separated) All of sudden all my CSVs were paused, some VMs restarted and just one CSV have present...

Which tool do you use for monitoring?
I use PRTG and I managed to write a quite simple powershell script to return each device's status (not the link status). Not bad, because I have other sensors to monitor network connectivity, free storage space, cpu, etc...

If I am not mistaken, dedup is configured to be performed once in 24 hours, usually during non-production hours namely because of its IOPS hungry nature Yep, but I meant the performance penalty on a already deduplicated volume, not during the dedup job execution. A VM running on .vhdx placed on a d...

Learning from my own mistakes ... So, almost solved this issue I don't know why, but all VMs cloned from that specific .vhdx showed the same performance issue . I created a new .vhdx file and installed a fresh Windows on it, and now it's much better: I had the same issue again, and I finally realize...

You may check if the host is the owner of this CSV; When a host writes on other CSV, a little performance penalty is expected due metadata transfers besides the iSCSI, especially when you use ResFS istead NTFS on CSVs. If you confirm it, it's likely that your cluster network is the bottleneck. Regards

Hi, It was finaly explained: I lost the entire disk partition where Starwind data was placed, so the OS and Service started but no .img file could not be found. Absolutely no Starwind's fault, except by the strange "Not licensed" message. PS: It was a test environment, no production data w...

Hi, My Lab environment (free license) had an unexpected power failure that shuteddown both Starwind's servers. I have simulated it many times before, so I'm pretty sure that I can manage to put them in sync again, but I didn't expect to see a "Not licensed" message like this. poweroutage.P...

I spent some time reading about the Hyper-V IO balancer. I had already seen something about configuring the IOBalance registry keys on Hyper-V, but there was many variations from post to post, and no updated official documentation from Microsoft ... I tried some of them, but with no effect, and at t...