Hi all
We are thinking of changing our current Microsoft DPM backup system for Nakivo and I have many doubts about the storage configuration and the technology used by nakivo.
the idea is to have a server with ssd disks with a storage of 40TB to make copies to disk, all the disks will be SSD Enterprise.
To save space, we are interested in making full syntentic copies of our VMs, at this point is where my doubts begin after the experience with Microsoft DPM
- What file system does Nakivo use for full synthetic backups?
- It is necessary to have ReFS to be able to perform full synthetic backups? (Do you use nakivo refs for block cloning?)
- There is some guidance for the implementation of the file system underlying the Nakivo repository. I mean things like interleave size, block size, file system. Our idea is to set up the server with Windows using Storage Spaces to be able to expand the pool if needed.
My experience indicates that without an efficient storage configuration, random write backup speed drops dramatically.
The Competitor forum is full of posts with performance issues and the cause is undoubtedly poorly configured storage.
Refs uses a large amount of memory for the deletion of large files such as a purge of old backups. I have seen it use up to 80GB of RAM just to perform the purge and this is due to storage performance.
ReFs uncontrolled metadata restructuring tasks and cache utilization also bring down performance.
Thank you very much for clarifying my initial doubts, surely after receiving your answer I will have new questions.
Regards
Jorge Martin
