I'm having a frustrating issue with our Azure Virtual Desktop (AVD) host pool where the profile containers keep filling up and failing to dismount properly. The profile disks are sized at 40GiB, and it seems like this is linked to the disks reaching capacity. Here are a few details about our setup: we have OneDrive files on demand enabled, Cached Exchange set to keep files for 6 months, and shared mailbox caching has been disabled. However, despite these settings, the disks fill up completely, leading to app crashes and slow user performance.
Upon scanning the profile disk, particularly OneDrive and the Downloads folder, it appears that they only account for about 20GB. The AppData folder seems to hold around 20GB, which is concerning. Here are three main points I want to explore:
1. I'm noticing that the Outlook OST files are taking up around 10-15GB. Should I consider disabling Cached Exchange mode since we're already using Azure?
2. There's also a sizable .edb file located in AppDataRoamingMicrosoftSearch.. that can grow to 5-7GB. Has anyone else experienced this?
3. Web browser caches also consume a significant amount of space. I know regular cache clearing is necessary, but I wanted to mention it.
Any suggestions or tools to help diagnose or address this situation would be greatly appreciated as I'm really at my wits' end!
2 Answers
Lowering the Cached Exchange mode to three months could help. Alternatively, consider setting up different group policies for users; the major space users could benefit from a reduced cache period or going online only.
You might want to check if VHDDiskCompaction is enabled. One issue with FSLogix is that the profile disks can grow but don’t shrink automatically. You can read up on disk compaction on Microsoft’s site for more details. It might help manage your space better!
I thought compaction was enabled by default, but I also see disks shrink temporarily after deleting files. They just don't maintain that smaller size.
We actually have compaction enabled, and it only reduces the disk size by a few MB at best. The VHDX usage is still around 50% which is frustrating.
That sounds like a good plan. I'd be inclined to go online only if I'm confident it will work well since we're using Azure.