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vsan painfully slow on CSV
Posted: Thu Jul 11, 2019 1:58 pm
by tgreaves
We are using vsan in a 2 node windows failover cluster.. We have a cluster shared volume as well as slices for sql server data.. The sql server slices are working great but the csv slice is painfully slow..
What would cause this? Let me know what other information is needed to help us..
Re: vsan painfully slow on CSV
Posted: Thu Jul 11, 2019 5:09 pm
by Boris (staff)
Can you share:
- basic network configuration of the links used for StarWind VSAN;
- Microsoft iSCSI Initiator configuration for CSV, including the way portals are discovered and the way targets are connected, MPIO policy used;
- whether it's the CSV that is slow or VHDX files located there;
- if VHDX files are meant, name their type (dynamic vs. fixed).
Re: vsan painfully slow on CSV
Posted: Thu Jul 11, 2019 5:40 pm
by tgreaves
Basic network: Both lan connection and sync channel are 10GB fibre.. The heartbeat is 1gb crossover..
Discovery is local machine, then remote machine.. MPIO is failover, local machine active, then remote machine..
I tested all of the slices including the hdd array where all of the starwind .img files are.. All are full speed except for the CSV in c:\ClusterStorage folder
Re: vsan painfully slow on CSV
Posted: Fri Jul 12, 2019 10:08 am
by Oleg(staff)
Could you please share information about Microsoft iSCSI Initiator configuration for CSV, including the way portals are discovered and the way targets are connected, MPIO policy used?
Re: vsan painfully slow on CSV
Posted: Fri Jul 12, 2019 10:32 am
by tgreaves
Already did, see above..
Re: vsan painfully slow on CSV
Posted: Fri Jul 12, 2019 11:58 am
by Oleg(staff)
Could you please send screenshots?
Re: vsan painfully slow on CSV
Posted: Fri Jul 12, 2019 6:08 pm
by tgreaves
Which panels in iscsicpl do you want screenshots of exactly?
Re: vsan painfully slow on CSV
Posted: Mon Jul 15, 2019 9:39 am
by Oleg(staff)
Discovery and favourite targets.
Also, what OS are you using, 2012 R2, 2016, 2019?