zfs + RAM

[phier]

hello,
i was wondering if with the new versions of ZFS following rule applies: ~1TB of storage = 1GB of ram

Asking because i was wondering what RAM do i need for my NAS which will contain ~ 50TB pool.


thanks

 

[danb35]

That has always been a deliberately-loose rule of thumb. Over about 32 GB, RAM requirements depend largely on workload. What do you intend to be doing with the system?

 

[phier]

@danb35 just nas machine for home purposes ; music/movies/ data (Documents, photos); nothing intensive i hope?

 

[danb35]

Just for storing those things? Most likely 16 GB will be fine. Acting as a media server (Plex/Emby/Jellyfin)? I'd bump it up to 32 GB. I'd recommend using the largest RAM modules you can, to maximize room for expansion if/when needed.

 

[phier]

@danb35; well the machine is limited by CPU xeon max limit is 64GB ram. Basically i am running ESXi, Truenas in VM for a NAS only purposes.

Then I want to install some ubuntu VM (with remaining ram ie 64-16GB) and there setup plex and other apps.

not sure it that makes a sense?
thanks