Just a small question regarding minimum memory requirements

[Soloam]

Hello, a lot is talked about the minimum memory requirements of FreeNas, the main guideline beeing, 8 Gigs minimum and 1 Gig for Terabyte of HDD.

My question is regarding the RAID, for example:

- 4x 2TB of HDD in zRaid2 will give 8TB of HDD and 4TB of data! Does this mean that I need 8Gb min of RAM or 4Gb of RAM?

To this I still have to had the 8 Gb of system RAM correct? So the final memory to this system would be 12Gb (8+4) or 16Gb (8+8). Correct?

Can any one clarify this?

Thank You

 

[INCSlayer]

The minimum is 8GB of RAM period
Then ofc the numbers go up if you have more storage and higher usage needs


Sent from my Nexus 5 using Tapatalk

 

[darkwarrior]

hi there,
seeing the small poolsize you should have enough with 8GB, but you should consider going up to 16GB of RAM if you hit any performance limitation that you are not happy with.
Seeing the price of RAM nowadays it's a kind of a no-brainer to go directly with 16GB... ;)

 

[wblock]

Disk space and RAM do not combine, there is no point to adding them. RAM requirements are not fixed to the amount of disk space, but more with usage.

Start with at least 8GB of RAM, regardless of disk space. As @darkwarrior points out, current RAM prices make 16GB reasonable.

 

[Soloam]

At the moment I have 16Gb and my setup is with:

- 4 x WDRed 2TB RAIDz2 (Main Storage)
- 1x WDGreen 1TB (External Backups)
- 1x WDGreen 1TB (Trash Files)

I was considering going up to 32Gb!

Thank you

 

[darkwarrior]

At the moment I have 16Gb and my setup is with:

- 4 x WDRed 2TB RAIDz2 (Main Storage)
- 1x WDGreen 1TB (External Backups)
- 1x WDGreen 1TB (Trash Files)

I was considering going up to 32Gb!

Thank you

Hi,
Having more memory is always better.
But seeing that you have only 6 disks, you are not considering any Enterprise workload and you are not considering investing into 10Gbit Network equipment you should have more than enough with 16GB of RAM.
In the end that is your call :D

 

[Soloam]

Thank you all for the enlightening!

Best Regards

 

[pirateghost]

I run 2-10 disk RaidZ2 across a total of 20-3tb disks. All on 32gb ram.