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August 10th, 2017 05:00
NAS Unity Failover
I have a unity 300 with total of 8 x 10G copper interface (4 per SP). I have two network segments: intranet and internet.
I plan to configure the following:
SPA P0, P1 are created as LACP trunk and connect to intranet VLAN
SPA P2, P3 are created as LACP trunk and connect to internet VLAN
For failover, I am going to cabling SPB interface to be exactly the same VLAN as per SPA
SPB P0, P1 are created as LACP trunk and connect to intranet VLAN
SPB P2, P3 are created as LACP trunk and connect to internet VLAN
I have two departments: Marketing and engineering and they will have their own dedicated NAS server. Both departments require connectivity to intranet and internet segment.
I am going to create a nas server in SPA for Marketing department with two interface: internet and intranet
For load balancing I am going to create a nas server in SPB for engineering department with two interface: internet and intranet.
In this scenario, when SPA failed. Can I say that the marketing department will failover to SPB and leverage the same interface for intranet and internet connectivity since i follow the same cabling design as per SPA.
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maniemc
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August 10th, 2017 05:00
As long as you physically cable/configure LACP at switches same as SPA/SPB, Any failover of one SP will bring the interface config to peer SP automatically, so it will work as you expected.
Just one point to note, Unity will not do automatic SP failover for port/link down on network (unity administrator can set the SP in service mode for failover).
wanaka
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August 10th, 2017 05:00
yes so in that case SPB interface will have multiple IP engineering and marketing at the time of SPA failover.
maniemc
169 Posts
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August 10th, 2017 06:00
Correct, SP will have multiple IP address of NAS (or even iscsi) during that time,
ThomDaleyPPI
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108 Posts
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August 10th, 2017 06:00
Chris is correct see page 20 from below:
https://elabnavigator.emc.com/vault/pdf/EMC_Unity_ESSM.pdf?key=1502083121149
wanaka
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August 10th, 2017 06:00
I was thinking of create separate NAS for different protocol but also aware that I can have one NAS server to support both CIFS and NFS. The only advantage I can see here I can bring down individual NAS without any impact to either CIFS or NFS user. Is there limit on number of nas server we can create in unity 300
DELL_ChrisHolloway
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125 Posts
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August 10th, 2017 06:00
Maximum of 90 NAS servers on the 300.