Hi guys,We currently have two PS6100s set up in a group and have volumes which are tiered between the two SANs.
From my understanding, I thought that if I restart an Equallogic member (via the GUI), the secondary controller should take over so that existing iSCSI connections are maintained and operation remains uninterrupted.
However in my case when I restart a member, I notice warning and error messages like the following:
But after about a minute or two everything comes back online and is operating fine.
I just wanted to know if this was normal behaviour of the Equallogics.
When you restart a controller, it does failover, however, you can't maintain iSCSI connections during that time. They are dropped and the initiators will have to log back into the array.
The Controller issues are because you issued the restart and CM0 was the active CM. If you do it again, CM1 will be active. While that CM is rebooting it's not available to the new primary CM but it knows that there should be a passive CM.
Re: Duplicate IP. Are the switch ports set to 'portfast'? That message means that both arrays tried to be the group lead for a moment as a result of the member you restarted was the group lead at the time.
Re: Connection login timeout. are you running ESXi v5? If so there's a new tech report on how to configure iSCSI and ESXi v5.0. on the Equallogic Website. www.equallogic.com/.../DownloadAsset.aspx
The other warnings are just letting you know that until the restart finishes and the passive CM comes back you're not fully redundant.
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