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March 25th, 2014 10:00

VNX5300 NAS migrate interface single device to link aggregation

Hello EMC Group,

currently our VNX5300 file component is providing shares (CIFS Server) through na interface based on single port cge-1-0.

I want to reconfigure the interface, replacing the single device by link aggregation (cge-1-0 , cge-1-1).

Is this an easy procedure?

Do I have to reconfigure shares, CIFS server, VDM, File System?

Thanks

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March 25th, 2014 11:00

not hard just need to schedule downtime. You will need to remove interface from your CIFS server, delete interface, create new device, re-assign interface to the trunk device, re-assign interface back to the CIFS server.

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March 26th, 2014 02:00

Thanks dynamox,

what about current CIFS shares, do I need to delete them before remove the interface or no need to do anything and the shares will remain after re-assign new interface back to the CIFS server?

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March 26th, 2014 04:00

ok, great!

No, we are not using Replicator.

Do you recommend link aggregation with more than these 2 devices?

We are planning to implement RecoverPoint in a few moths, any advice?

Thanks.

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March 26th, 2014 04:00

no need to mess with shares, permissions ..etc, everything will remain intact. Are you using Replicator ?

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March 26th, 2014 04:00

RecoverPoint is for block replication, it does not use network interfaces on your datamovers.

Link aggregation - what kind of switching environment do you have ? For example on Cisco Nexus switches that use vPC you can configure a trunk interface on VNX where members are connected to two separate Nexus switches. This gives you more throughput and redundancy. Are you using 10g NICs ?

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March 26th, 2014 10:00

Nexus ? If not, is the same network/VLAN available on both switches ?

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March 26th, 2014 10:00

We have 2 Cisco Switches 1Gb ports.

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March 26th, 2014 10:00

Not Nexus and yes, the same network/VLAN is available on both switches.

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March 26th, 2014 11:00

it's your call but i would do this :

  • if you only have two interfaces to work with, do not trunk. Instead connect one interface to switch 1 and connect second interface to switch 2. Then you will create an FSN (fail safe network) device, and after that you would assign interfaces to it.  Yes, this option does not give you 2 x 1g lane "highway" but you can redundancy (one interface is active and one is stadby). If one of those network switches locks up, if one of your network cables get cut, if there is a link down event ..the stanby interface connected to the other switch takes over. Super fast failover, within 2 seconds.

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March 26th, 2014 12:00

Actually, I have 4 interfaces on each DM and wanted to take advantage from it, not forgetting future needs that may arise as replication. Does this make sense to you or I should use all 4 DM ports for shares ?

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March 26th, 2014 15:00

so with 4 interfaces you could do this:

Option 1

2 interfaces connected to switch 1, create trunk0

2 interfaces connected to switch 2, create trunk1

create FSN device using trunk0 and trunk1 (trunk0 is active, trunk1 is standby). So with this config you have two 1G interfaces active. FSN will not failover until both members of a trunk are down.

Option 2

3 interfaces connected to switch 1, create trunk0

1 interfaces connected to switch 2

create FSN using trunk0 and cge4 (or whatever that NIC is). With this config you have 3 active 1G connections. If there in issue with switch 1, you failover to cge4 and run in "degraded" mode with just one 1G connection.

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March 27th, 2014 07:00

sure, take a look at these excellent documents, they cover all things networking on File VNX.

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March 27th, 2014 07:00

Thank you so much, I really appreciate your help.

I am now much better informed on this matter.

.

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