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High Availability with Unique VM Resources

I understand what I'm about to request an answer on is poor practice, however, I'm mostly curious if it could be done without issue.

My purpose for running high availability is primarily to eliminate downtime when patching. The UTM Master is set as Preferred, as it uses a local HDD Datastore (so that I can update the Synology NAS without interrupting the Network), while the UTM Slave uses a NFS Datastore.

Considering that, I'm curious if I could lower the RAM Allocation of the UTM Slave to something different than what the UTM Master uses without causing UTM complaints? Currently I'm allocating 4 GB for each with my usage roughly being half that and I'm wondering if it would be a problem to lower the UTM Slave to 2 GB or slightly above, effectively closing the headroom gap for something that is only enabled during Up2Date or emergencies, freeing memory for other Virtual Machines.

Cheers,
Kyle

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0 Scott_Klassen over 9 years ago

Give it a shot. Best case, during switch over performance will drop. Better solution, if possible, upgrade the motherboard to one that supports 64GB+ RAM. [:)]

__________________
ACE v8/SCA v9.3

...still have a v5 install disk in a box somewhere.

http://xkcd.com
http://www.tedgoff.com/mb
http://www.projectcartoon.com/cartoon/1
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0 scorpionking over 9 years ago
This will work. I had a similar setup (1 physical with 8GB and 1 virtual (Hyper-V) with 4GB RAM) until I changed recently to 2 virtual UTMs.
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Sophos user, admin and reseller.
Private Setup:

XG: HPE DL20 Gen9 (Core i3-7300, 8GB RAM, 120GB SSD) | XG 18.0 (Home License) with: Web Protection, Site-to-Site-VPN (IPSec, RED-Tunnel), Remote Access (SSL, HTML5)

UTM: 2 vCPUs, 2GB RAM, 50GB vHDD, 2 vNICs on vServer (KVM) | UTM 9.7 (Home License) with: Email Protection, Webserver Protection, RED-Tunnel (server)
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0 DarkKnight93 over 9 years ago

can confirm this too, 3GB and 8GB on 2 different esxi Hosts running - no HA Failover issues or other problems
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0 DaMaN841 over 9 years ago in reply to DarkKnight93

Awesome. Thank you!

64 GB is definitely a better solution, however, not in the cards at the moment [:)]

Cheers,
Kyle
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0 Scott_Klassen over 9 years ago

64 GB is definitely a better solution, however, not in the cards at the moment
...unless you win the lottery. I know that feeling. [;)]

__________________
ACE v8/SCA v9.3

...still have a v5 install disk in a box somewhere.

http://xkcd.com
http://www.tedgoff.com/mb
http://www.projectcartoon.com/cartoon/1
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