![]() We also noticed that scans to several seconds to finish now. This time Host 2 also lost connections to the LUNs as evidenced when we did a scan. I disconnected Host 3 immediately from the Cluster because Servers were starting to gray out and get marked as inaccessable. Host 3 immediately lost all LUNS when I did a Scan. I then deleted that LUN and created another. I then created a new LUN and attached it to the cluster. The onsite CE rebooted both the SP's and all the hosts could again see all the LUNS. The Senior Engineer could not find a problem. ![]() The CE came in and gathered logs and sent them to a senior Engineer. We requested a EMC CE be onsite the next morning and EMC obliged. Each could prove that it was not their problem. They all pointed at each other as the cause. ![]() We got VMware, Cisco and EMC support on the phone. The LUNs that had been on Host 1 was still visible but they disappeared on Host 2. We then tried to create a new LUN and attach it to Host 1 and 2. We moved Host 3 out of the Cluster and tried to attach a new LUN to it. When it came in we installed the new card and configured it in the Cisco and the VNX. We thought it might be a bad HBA card and ordered a replacement. That was when we noticed that servers were being migrated automatically to host 1 and 2. ![]() We added it to Host 2 and vCenter came back up. We shut down the vCenter Server and removed it from inventory. We logged in as root on each individual Host and still could not see the LUNS on host 3. We then noticed that servers became "inaccessible" that were located on Host 3. We could no longer get into vCenter because vCenter was on a LUN on Host 3. We checked events and noticed that the LUNS were disconnecting and then reconnecting constantly every 6 to 7 seconds. We then noticed that the servers started moving extremely slow. On Host 3 all the LUNS disappeared even the new LUN immediately when we asked to do a refresh of storage. We created a new 3TB LUN and attached it to the Hosts.On Host 1 and 2 we could see the new LUN. Then we needed to add an additional LUN and attach it to the Hosts. We moved over 85 VM's to this infrastructure and everything was great. We also enabled encryption on the VNX as well as Dedupe. We created 5 - 3 TB LUNS on the VNX and attached them to the Hosts. Here is the problem: We put in this new infrastructure and tested and everything looked great. The Appliance resides inside the Cluster on a datastore. We use Vcenter 6 Appliance to manage VMware. We use Cisco 16GB Fibre Channel switches which have redundant links to a new EMC VNX5200 and to each host. The Servers have 256 Gb RAM and we boot VMware 5.5U3 from spinning disk. ![]() We have put in a new VMWare 5.5 Infrastructure with 3 new Dell R530 Servers with Qlogic 2662 Dual Port FC cards. ![]()
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December 2022
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