10Gb setup on iMac Pro

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eziggy3
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10Gb setup on iMac Pro

Unread post by eziggy3 » Tue Aug 07, 2018 9:42 am

Just Got a new iMac pro and want to take advantage of the 10Gb NIC. I purchased an Intel X540-T2 NIC for my DS1817+ and a Netgear GS110MX switch with 2 10Gb ports.

I plan to use the 10Gb NIC on the NAS connected to one of the 10Gb NICs on the switch and the the iMac Pro to the other 10Gb NIC. Is that all it takes to get things up and running?

Any settings in DSM (other than the network Interface) that need to be changed?

Squozen
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Re: 10Gb setup on iMac Pro

Unread post by Squozen » Tue Aug 07, 2018 2:36 pm

Nope, that's it. I read this as you connecting the iMac to the switch, and not to the Synology, let me know if I've misunderstood you.

eziggy3
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Re: 10Gb setup on iMac Pro

Unread post by eziggy3 » Tue Aug 07, 2018 3:01 pm

That's correct. Connecting everything to the switch.

In my research about the 10Gb setup I see that some people are making changes to SMB or AFP settings, but I'm not sure why that would make a difference if I'm just changing to a faster interface... thus my question.

mervincm
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Re: 10Gb setup on iMac Pro

Unread post by mervincm » Tue Aug 07, 2018 4:14 pm

People willing to invest in 10gbE NICs are interested in maximizing performance, tweaking protocols is just another way to boost performance, especially on a mac.
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eziggy3
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Re: 10Gb setup on iMac Pro

Unread post by eziggy3 » Wed Aug 08, 2018 1:28 am

Squozen wrote:
Tue Aug 07, 2018 2:36 pm
Nope, that's it. I read this as you connecting the iMac to the switch, and not to the Synology, let me know if I've misunderstood you.
What if I want to do a direct connection?

Squozen
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Re: 10Gb setup on iMac Pro

Unread post by Squozen » Wed Aug 08, 2018 9:37 am

You can do it but you'd have to use wifi for the Mac to get a connection to anything else on your network, and you'd be using a different IP address to reach the Synology from the Mac as you would for any other device on the network. I recommend against it.

mervincm
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Re: 10Gb setup on iMac Pro

Unread post by mervincm » Thu Aug 09, 2018 1:46 am

eziggy3 wrote:
Wed Aug 08, 2018 1:28 am
Squozen wrote:
Tue Aug 07, 2018 2:36 pm
Nope, that's it. I read this as you connecting the iMac to the switch, and not to the Synology, let me know if I've misunderstood you.
What if I want to do a direct connection?
Direct connections are doable but a more complicated setup. I started with a configuration like this, but soon moved to a switch based configuration for simplicity.

There are many switches available that give you a couple ports of 10G (1 for NAS, 1 for PC) and 12-24 ports of 1gig for the rest of your gear. Microtik has one for 139$ list price (CSS-326-24g-2s+RM) I used a similar (older) model for a couple years exactly like this.

You would need at least 1 of these for your rj45 based mac, but its only 65$ (S+RJ10)
1815+ (factory patched board) 4GB 5x6TB WD RED

eziggy3
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Re: 10Gb setup on iMac Pro

Unread post by eziggy3 » Thu Aug 09, 2018 7:51 am

Thanks for the information

Bob Zelin
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Re: 10Gb setup on iMac Pro

Unread post by Bob Zelin » Thu Aug 09, 2018 8:32 pm

Hi eziggy3 -
you are being given some inaccurate information.

If you are running any MacOS above 10.11.6 (and I know that your iMac Pro is probably running some version of 10.13 High Sierra), you must disable SMB signing, or your SMB speeds will be slow. How slow ? A 10G connection that should be getting 800 - 900 MB/sec will only be about 140 MB/sec (a 1G connection is 100 MB/sec). You have a 10G port on your iMac Pro and you have a 10G port with the Intel X550-T2 card - you must disable SMB signing. I will give you a quick overview of this, but you can now find countless articles via a Google search on how to disable SMB signing on a Mac.
You open terminal, and type this in (you need to have some knowledge of the vi text editor) -
sudo vi /etc.nsmb.conf
you click on the small letter i to get into insert mode
you type this in
[default]
signing_required=no
to save this, you hit "esc" and type this in
:wq!
you have now saved this file. Reboot your Mac. Now SMB signing is disabled.
you should setup a static IP address for your 10G port on both your Synology and your Mac 10G port.
for example - the Synology should be 192.168.2.3, and the Mac should be 192.168.2.4.
If you enable jumbo frames (MTU 9000) your data transmission will even be faster.

I don't know why you have the little Netgear GS100MX. This is an 8 port switch with 2 10G uplink ports.
If you want to have multiple clients connect via 10G, you should have purchased an all 10G switch like the
QNAP QSW-1208-8C or Netgear XS708T. The only possible configuration I can think of for this switch for you is to
put the iMac Pro 10G port into one of the 2 10G ports, the Synology 10G port into the other port, and now you can connect additional computers to the Synology (at the static IP address) at only 1G speeds - not 10G speeds.

Please let me know if you have any further questions.

Bob Zelin
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Squozen
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Re: 10Gb setup on iMac Pro

Unread post by Squozen » Fri Aug 10, 2018 11:53 am

With respect, Bob, the OP asked about networking and we responded accordingly. They didn't ask about SMB or we would have given the same information you have.

Bob Zelin
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Re: 10Gb setup on iMac Pro

Unread post by Bob Zelin » Fri Aug 10, 2018 1:34 pm

sorry Squozen !

Bob Zelin
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eziggy3
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Re: 10Gb setup on iMac Pro

Unread post by eziggy3 » Sat Aug 11, 2018 3:09 am

Bob Zelin wrote:
Thu Aug 09, 2018 8:32 pm
Hi eziggy3 -
you are being given some inaccurate information.

If you are running any MacOS above 10.11.6 (and I know that your iMac Pro is probably running some version of 10.13 High Sierra), you must disable SMB signing, or your SMB speeds will be slow. How slow ? A 10G connection that should be getting 800 - 900 MB/sec will only be about 140 MB/sec (a 1G connection is 100 MB/sec). You have a 10G port on your iMac Pro and you have a 10G port with the Intel X550-T2 card - you must disable SMB signing. I will give you a quick overview of this, but you can now find countless articles via a Google search on how to disable SMB signing on a Mac.
You open terminal, and type this in (you need to have some knowledge of the vi text editor) -
sudo vi /etc.nsmb.conf
you click on the small letter i to get into insert mode
you type this in
[default]
signing_required=no
to save this, you hit "esc" and type this in
:wq!
you have now saved this file. Reboot your Mac. Now SMB signing is disabled.
you should setup a static IP address for your 10G port on both your Synology and your Mac 10G port.
for example - the Synology should be 192.168.2.3, and the Mac should be 192.168.2.4.
If you enable jumbo frames (MTU 9000) your data transmission will even be faster.

I don't know why you have the little Netgear GS100MX. This is an 8 port switch with 2 10G uplink ports.
If you want to have multiple clients connect via 10G, you should have purchased an all 10G switch like the
QNAP QSW-1208-8C or Netgear XS708T. The only possible configuration I can think of for this switch for you is to
put the iMac Pro 10G port into one of the 2 10G ports, the Synology 10G port into the other port, and now you can connect additional computers to the Synology (at the static IP address) at only 1G speeds - not 10G speeds.

Please let me know if you have any further questions.

Bob Zelin
Great info. Thanks. I Did decide to go with the Netgear XS505M to give me more options. It has 5 ports which is fine.

eziggy3
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Re: 10Gb setup on iMac Pro

Unread post by eziggy3 » Sun Aug 12, 2018 3:09 am

Bob Zelin wrote:
Thu Aug 09, 2018 8:32 pm

you have now saved this file. Reboot your Mac. Now SMB signing is disabled.
you should setup a static IP address for your 10G port on both your Synology and your Mac 10G port.
for example - the Synology should be 192.168.2.3, and the Mac should be 192.168.2.4.
If you enable jumbo frames (MTU 9000) your data transmission will even be faster.

Bob Zelin
So it seems I got everything running. I’m getting close to 400 MBs on the speed test. Consistently high 300s. Was hoping for more. I increased the MTU on the NAS, But no noticeable change. When I tried to increase the MTU on the iMac pro things went south. Speed went down to single digit range and I had trouble accessing the DSM, even from my other iMac. When I switched the setting back to automatic and rebooted everything went back to 300-400 range. Seems like increasing the connection by a factor of 10 would give more than just a 3 x the speed.

Bob Zelin
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Re: 10Gb setup on iMac Pro

Unread post by Bob Zelin » Sun Aug 12, 2018 7:26 pm

Hi eziggy3 -
well, what can I say. You spend a lot of money for the iMac Pro - you spend a lot of money for the Synology.
At some point, if you can't figure things out, you need to hire someone to help you. That's the way it goes.
This stuff is not plug and play - not from Synology, not from QNAP, not from anyone.

Bob Zelin
Bob Zelin
bobzelin@icloud.com

eziggy3
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Re: 10Gb setup on iMac Pro

Unread post by eziggy3 » Sun Aug 12, 2018 9:35 pm

Bob Zelin wrote:
Sun Aug 12, 2018 7:26 pm
Hi eziggy3 -
well, what can I say. You spend a lot of money for the iMac Pro - you spend a lot of money for the Synology.
At some point, if you can't figure things out, you need to hire someone to help you. That's the way it goes.
This stuff is not plug and play - not from Synology, not from QNAP, not from anyone.

Bob Zelin
Well half the fun is trying to figure it all out. It's not like I NEED the iMac, Synology or the speed. Just trying to see if I can get all to work together. I'm always learning. Appreciate the assistance.

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