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post #11 of 19
This is for sure (iSCSI disk for the purpose of games), in no way shape or form, a worth while purchase if you do not already have these items. That being said, I believe this is certainly possible with risk. I stored my VMs from my older esxi 5.5 server on my old freenas server using an iSCSI disk. One of those VMs was a gaming VM but admittedly, I only ever played League and TF2. I had a 1gbps connection on the freenas server, the esxi host, and on the thin client I streamed everything to. Seemed ok to me for the two previous games. I would imagine only having an application that lives there as opposed to the entire OS disk + application would fare better. You'll definitely want to check compatibility for the network cards. DAC setups can be pretty cheap on ebay, as long as copper is used at the correct rated length, there is no speed difference vs the same length optical connections (go for whats cheaper).

EDIT: I redid my power calculation, you *might* save a few dollars or loose a few dollars vs buying an SSD. Either way, my vote is buy another SSD for games.
Edited by Mr.N00bLaR - 8/27/17 at 10:44pm
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post #12 of 19
I don't think is worth it, that setup for a freenas is overkill, why don't just put those 4 drives in your main computer?

if you want to have a Movie library you can always just share a partition over the wire to your TV's


but in the other hand if you want to have shared data over the net, you can always set up the freenas but not so overkill to save power and always have in line...
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post #13 of 19
Thread Starter 
Quote:
Originally Posted by cdoublejj View Post

Quote:
Originally Posted by xioros View Post

So I take it the protocol overhead is acceptable?
Cheers. I'll be using either 2 dual 10Gb Intel RJ45 NICs or a single Mellanox ConnectX 2 with a direct link. Both should support the protocols.

what do you mean by protocol overhead?

also i have heard jumbo frames can affect other things, so we might assume on this particular network this nas will be all that's on it and or that most things don't care/ or are not adversely affected by jumbo frames?

I was worried that all the protocol layers might have a significant impact on the client performance of the array.

Quote:
Originally Posted by Mr.N00bLaR View Post

This is for sure (iSCSI disk for the purpose of games), in no way shape or form, a worth while purchase if you do not already have these items. That being said, I believe this is certainly possible with risk. I stored my VMs from my older esxi 5.5 server on my old freenas server using an iSCSI disk. One of those VMs was a gaming VM but admittedly, I only ever played League and TF2. I had a 1gbps connection on the freenas server, the esxi host, and on the thin client I streamed everything to. Seemed ok to me for the two previous games. I would imagine only having an application that lives there as opposed to the entire OS disk + application would fare better. You'll definitely want to check compatibility for the network cards. DAC setups can be pretty cheap on ebay, as long as copper is used at the correct rated length, there is no speed difference vs the same length optical connections (go for whats cheaper).

EDIT: I redid my power calculation, you *might* save a few dollars or loose a few dollars vs buying an SSD. Either way, my vote is buy another SSD for games.

Quote:
Originally Posted by christoph View Post

I don't think is worth it, that setup for a freenas is overkill, why don't just put those 4 drives in your main computer?

if you want to have a Movie library you can always just share a partition over the wire to your TV's


but in the other hand if you want to have shared data over the net, you can always set up the freenas but not so overkill to save power and always have in line...

I think you misunderstood, I'm building a FreeNAS server regardless to replace my DS214se. It will hold more than just this iSCSI array and the 10 (or 20 GBit) connection is because I have a couple of NFS shares that I need more than 1GBit of performance on.

I'm aware of the SFP+ solution - but I already have one X540-T2 (picked it up for €20), so I might as well invest in a second one (~€200) instead of buying a complete SFP+ setup (€75-100). They also give me the future compatibility with 10GBit Ethernet (RJ45) equipment.

As for more SSD storage, possibly - but that would just be an extra cost. I'm going with 4x WD Black in RAIDZ regardless (+ a 256 GB SSD as ARC2L cache). If I need to throw in 2 TB more of SSD storage in my main system, it'll just add to the cost and probably won't even be put to full use. Nocking up nearly €700 for storage that I'll barely use seems like a real waste to me - especially because it's only going to drop in price.


As for why I don't mount them in my main system: it's a eyecandy build that also aims for maximum performance. I'll be running a single M.2 SSD (which allows me to disable to onboard SATA) for all of my important and performance sensitive storage. The iSCSI & NFS would be used for storing larger data sets that aren't performance critical. A lot of that storage would have to accessible to to other users as well (NFS), but a portion of it would just be me and preferably with a more native file system control (iSCSI).

I also want to avoid performance bottlenecks on my network, which is why I chose a dedicated line between the server and my main system - and because 1Gbit doesn't suffice, I went with 10 (or even 20 in teaming). I could possibly have gone with a 4x 1GBit card for a lot less, but I figured it wasn't worth the extra mess (setup, compatibility and extra cables).

From what I've read, 10GBit also allows for better random reads/writes on NFS. Not sure if the same is also true for iSCSI, but I figured it wouldn't hurt.
 
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post #14 of 19
then it's not "just for storage"

you clearly have some needs for this setup being the "eyecandy" the weakest one but not totally unworthy

having a setup like this is always nice to have maybe not worth the money but if you have the money then the idea is actually good
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post #15 of 19
Thread Starter 
Quote:
Originally Posted by christoph View Post

then it's not "just for storage"

you clearly have some needs for this setup being the "eyecandy" the weakest one but not totally unworthy

having a setup like this is always nice to have maybe not worth the money but if you have the money then the idea is actually good

Maybe. But noise is also a factor. My rig will run a 560 + 280 at very low fan speeds and I don't need a crackling hard drive to disrupt my silence the way my WD Black 3TB does now rolleyes.gif My NAS would be further away and noise isolated.

Like I said, I need the NAS either way - and moving my slow storage to the NAS completely for a relatively small (if any) cost doesn't seem that far fetched. Either way, expect a build log between this and 3 months thumb.gif
 
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post #16 of 19
so do you mean like the information the protocol stuffs in the headers of the packets or am i in over my head and out of my element here?
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post #17 of 19
Thread Starter 
Quote:
Originally Posted by cdoublejj View Post

so do you mean like the information the protocol stuffs in the headers of the packets or am i in over my head and out of my element here?

I think so? biggrin.gif I'm not that experienced with networks, protocols etc - IIRC the compute workload and abstraction layers required to transport and all the data over the network, also take a bite out of your performance. I had no idea of how much though, and from what I've read here, it shouldn't be a problem thumb.gif
 
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post #18 of 19
Quote:
Originally Posted by xioros View Post

I think so? biggrin.gif I'm not that experienced with networks, protocols etc - IIRC the compute workload and abstraction layers required to transport and all the data over the network, also take a bite out of your performance. I had no idea of how much though, and from what I've read here, it shouldn't be a problem thumb.gif

i think it's been a while since i watch a video on layers and what not. i assumed a packet wasa packet and that that switches and routers moved them equally. i get that wrapping the info up in to a packet could require some CPU resources. or if anyone has any videos or reading i should look in to, i'd be glad to be corrected.
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post #19 of 19
Quote:
Originally Posted by xioros View Post

So I take it the protocol overhead is acceptable?
Cheers. I'll be using either 2 dual 10Gb Intel RJ45 NICs or a single Mellanox ConnectX 2 with a direct link. Both should support the protocols.

In enterprise environments, iSCSI SANs typically have their own dedicated network switch, which in turn may or may not have specific optimisations for the iSCSI protocol. For a home environment on 10GigE, especially with dedicated connections between the iSCSI box and whatever is mounting the iSCSI LUN, any protocol overhead will be irrelevant.
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