Why disk size is differnet (less) from n4f

[Kerem TASLIEL]

I just installed nas4free 10.02 and freenas 9.3.1 on ESXi 5.1 to try deduplication and standart ZFS partition


1.) gave them both 10x8GB virtual disks
2.) and made 2 pool with 5 disk x 8 GB for each
3.) and made both are ZFS Zraid 1
4.) and made 1st pool deduplication enabled for both

and I use share and connect as network drive to my windows,
now I have 4 drivers as in picture

but there is some thing wrong in my oppinion or am I doing something wrong
for FreeNas : 5 disk x 8GB = 24GB
for Nas4Free 5 disk x 8GB = 30,7GB

and also n4f dedup didn't work I'll check today but it is not my biggest consern for now;

 

[gpsguy]

One issue that you'll see with small test disks like this, is that FreeNAS creates a 2GB swap partition on each disk. You should size your memory, such that it wouldn't need to use swap. Having the partition is useful, should you need to replace a disk down the road and the size isn't exactly the same as the original disk.

Please read the documentation and some of the stickies (or do a forum search) on deduplication, before you put it in production. The general rule of thumb, is 5GB of RAM per 1TB of disk space to be deduplicated.

 

[Kerem TASLIEL]

gpsguy thanks for reply,
I was using Promise ns4600 for storing my movies/serials etc... and now I will just make DIY home nas with 8 x 3TB disks instead of expensive solutions like QNAP, Synology etc...
I read a lot about deduplication, and I'll not use this NAS for production in any way & I already know movies already has kind a dedup with x264 or x265 codes.

I'm planning to use my old q8300 CPU with 8 GB memory on Asus P5Q Pro board. with good ThermalTake case&psu to put these drivers on. and I just want to see how deduplication works on ZFS. honestly it was working very well with document and picture files on Windows 8.1 (with code files from W2012R2).

But I didn't know about this 2GB cache, it's good to know it :) I feel relaxed, becuase I like mostly FreeNAS but when I think I would loose %25 of 20TB :) I was thinking maybe n4f would be better.

 

[SweetAndLow]

There is aa 100% chance that you should not be using dedup and it will not work for what you want.

 

[JDCynical]

I'm planning to use my old q8300 CPU with 8 GB memory on Asus P5Q Pro board.

No ECC, desktop board, FSB CPU...

You aren't planning on using this kit for 'production' I hope, but just a testing system, right?

 

[Kerem TASLIEL]

Justin, I promise I'll use at home and just for fun, Watching movies/serials over Android TV as I said :)

 

[pirateghost]

Justin, I promise I'll use at home and just for fun, Watching movies/serials over Android TV as I said :)

That's "production".

Just because it's a home server doesn't mean it's not production