Revit slow read/write via QNAP NAS

[ro]

Hi world,

Migrated from Server 2012 to QNAP TS453E with 4TBSSDs. Read/write of Revit files is slow. Files are not workshared and purged, 122MB size files.

NAS read/writes fast outside of the Revit environment.

Any tips to speed up would be greatly appreciated.

[DarrenP]

might be because of this: https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/Support-for-non-Mi...

[ro]

Thanks @DarrenP . I've followed

https://docs.qnap.com/operating-system/qes/2.2.x/en-us/GUID-0CF439D0-DF31-4AF5-9030-ED3BCA292D71.htm... and that doesn't appear to be the issue.

Any other ideas?

[TripleM-Dev.net]

Hi,

I think it's more about the latency of connection/drives, a Revit model is actually a database and I think it saves in smaller fileparts and not as one large continuous file like when you copy a file in windows explorer. I don't think it can be compared like that.

You might consider making the model workshared, and place the local model locally, saving happens than to the system itself (full file) and the Syncing only copies the changes to the central model, this would speed things up.

[jimmyjamesjimmy2]

From my understanding, when saving a file Revit uses a "Write Through". This means that the "save" will not finish until the entire file has been written to disk. This bypasses any write cache that Windows might utilize. You'd expect this to be an issue for very large files, but what about files under 200MB?

Hmm, if this is more about the latency of connection/drives, then we should be able to rule that out. I can see that you're connected by network cable to the NAS and the NAS is using SSD hard drives. Are you using any raid, say raid10? What is the latency to the NAS if you do a ping test? How long does it take to copy a 100mb or 1GB file to and from the NAS?

[ro]

Hi World,

This issue appears to be network related, not to the NAS. I'll update when this thread when I know more.

[ro · Accepted solution]

Hi World,

A network element seemed to be causing the issue. The solution has been to modernise some old equipment using 2.5Gb components. This has resolved the issue.

NAS working fine.