Jump to content
Welcome to our new Citrix community!
  • 0

User Layer HA


Andrew Rosenau

Question

10 answers to this question

Recommended Posts

  • 0

I don't know any way to get real HA with user layers.  Once the user layer is attached to the desktop if it is disconnected for any reason the user will have to logout/reboot and log on again.  If the user layer were corrupted its likely that whatever technology you use for the storage will not know that so it will take a recovery process to get the user layers back.

 

So backups become critical but backing up user layers is challenging because they are locked by the user.  A backup/recovery strategy will depend on the storage architecture you choose.  I have heard from customers using file server clusters like Scale Out File Server that a VSS backup is working well for them on the file server.  This provides the ability to backup even if users have not logged out.  Also SAN/NAS backups should work as they do the backups underneath the file system using something like NDMP.

 

So backups are important, as is using a clustered file system so that if a node fails the user layer will keep running.

 

I have covered most of this here:

https://www.citrix.com/products/citrix-virtual-apps-and-desktops/resources/understanding-elastic-layering.html

and here

https://www.citrix.com/products/citrix-virtual-apps-and-desktops/resources/app-layering-4x-availability-recovery-guide.html

 

 

Good Luck,

Rob

Link to comment
  • 0
8 hours ago, Rob Zylowski1709158051 said:

Once the user layer is attached to the desktop if it is disconnected for any reason the user will have to logout/reboot and log on again. 

 

So my primary focus for HA is for zero downtime maintenance of the file servers. (Windows updates, etc) So my thought was to use server 2016/2019 scale out file server on vmware and then use RDM for the user layer disks. But are you saying even if I did this if I rebooted one of the file servers users would lose connection to their user disk and then have to log out and back in to regain connection?

Link to comment
  • 0
1 hour ago, Rob Zylowski1709158051 said:

User layers are vhd’s mounted by windows desktops from the share. Do you mean you want to make the sofs clustered disks using an rdm?

 

Yes I'm trying to make the share where the VHD's would be stored highly available. Is there a better way to do this other than sofs and rdm?

Link to comment

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...