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# citrix-vads
Slackbot
08/22/2023, 5:34 PMThis message was deleted.
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Steve Noel
08/22/2023, 6:13 PMsame thing happens if you boot from ISO?
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Daniel Madsen
08/22/2023, 6:14 PMBDM is iso or am I mistaken, in my abbreviations? 🙂
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Steve Noel
08/22/2023, 6:15 PMBDM is actually a partition on the VM
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Daniel Madsen
08/22/2023, 6:15 PMI've always referred BDM to using ISO. We are only booting from ISO. I'll edit the post
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Steve Noel
08/22/2023, 6:22 PMand that screenshot is where it just gets stuck and sit there?
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Daniel Madsen
08/22/2023, 6:22 PMYup
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Steve Noel
08/22/2023, 6:22 PMany FW b/t the VDA and PVS Server? Any relevant event logs on the PVS Server?
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Daniel Madsen
08/22/2023, 6:25 PMWe moved one of the PVS servers, to the VDA vlan and changed the streaming IP. Created a new boot iso, with the single PVS server, just to eliminate that possibility of missing ports in the FW.
Nothing out of the ordinary in the logs.
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Steve Noel
08/22/2023, 6:33 PMyou see the logs on the PVS server to see that it's talking, or switching servers at all?
Steve Noel
08/22/2023, 6:36 PMis it always stuck on that screen connecting to the same PVS server?
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Daniel Madsen
08/22/2023, 7:15 PMIts stuck on both of them.
I’ll look through the logs tomorrow, and give a shout, if I find anything out of the ordinary. Thanks for the help so far
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Steve Noel
08/22/2023, 8:15 PMjust confirming older versions or older vdisks don't work as well?
Steve Noel
08/22/2023, 8:15 PMlike, it's not something image related
Steve Noel
08/22/2023, 8:16 PMif you goto the target device and the last tab and enable more logging, does any of that show up in event viewer on the server?
Steve Noel
08/22/2023, 8:16 PMboth pvs servers have been rebooted?
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jvitech
08/22/2023, 8:28 PMI had once a sneaky issue because the PVS subnet was misconfigured so depending of the client IP it couldn't reach the PVS server. Double check your network conf
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Daniel Madsen
09/14/2023, 7:55 AMHi guys. Sorry for the suuuuper late answer. So we ended up with, formatting D, from ReFS to NTFS. Copy vhdx's to the drive and now, it seems, everything is working fine and restart times are off the chart. We didn't find any, this-is-whats-wrong and may never find it.
How is your experience with NTFS vs. ReFS in a PVS setup?
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Dima
09/14/2023, 3:03 PMusing refs on new PVS servers. no boot issues so far. But cant say boot is blazing fast....
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Jonathan Pitre
09/14/2023, 5:55 PMReFS is definately faster for larger files.
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Mike Streetz (O_P)
09/14/2023, 6:39 PMI keep hearing people say refs is not good if there’s a lot of connections to the server, so for PVS I guess it really depends how many machines you have talking to the server
Mike Streetz (O_P)
09/14/2023, 6:40 PMfor FSLogix for example it seems to fall apart over 500 users/connections
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Jonathan Pitre
09/14/2023, 6:41 PMall version of ReFS or older OS ? we need some benchmarks
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Mike Streetz (O_P)
09/14/2023, 6:42 PMon server 2019
Mike Streetz (O_P)
09/14/2023, 6:42 PMfrom what I was hearing
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Jonathan Pitre
09/14/2023, 6:43 PMwas there any major change to ReFS between 2019 and 2022?
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Mike Streetz (O_P)
09/14/2023, 6:43 PMI’v never tried it with more than 500 so I can’t say if that holds true
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Jonathan Pitre
09/14/2023, 6:45 PMand was that with a Vmware PVSCSI dedicated controller?
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Mike Streetz (O_P)
09/14/2023, 6:47 PMdon’t know
Mike Streetz (O_P)
09/14/2023, 6:47 PMI don’t have first hand experience of refs not working well
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Dima
09/14/2023, 6:48 PM500 per PVS server is a lot of users...
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Mike Streetz (O_P)
09/14/2023, 6:48 PMyeah, I’ve seen it though…
Mike Streetz (O_P)
09/14/2023, 6:49 PMI would not recommend it
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Dima
09/14/2023, 6:49 PMi bet. would be a good problem to have 🙂
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Daniel Madsen
09/14/2023, 8:36 PMThere's something like 22 or 23 VDI's per PVS server. So it really shouldn't impact, whether it's NTFS or ReFS. We, the consulting firm I work for, is suspect VMware SRM(Site Recovery Manager) to cause the issue, but can't prove it. Unfortunately.
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langsbr
09/20/2023, 5:07 PMWe updated all of our PVS data disks to ReFS about a year ago. Everything is faster. Vdisk merge is seconds which is nice. We targeted about 600 Vms per PVS server (all single session) and never had an issue. Sometimes it could get to 800ish and still no problem.
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Mike Streetz (O_P)
09/20/2023, 7:04 PMwow, that’s good data to know
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langsbr
09/20/2023, 10:11 PMWe also moved from bare metal physical servers with 2x10GB LACP to virtual machines on Nutanix and saw a MUCH improved PVS VM boot times. We had a large number of PVS pods as well - 50K machines across 6 or 7 PVS environments. If you are doing PVS on Nutanix, definitely use the ISO boot - it gives you so much better granularity over PXE.
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