Storage Networking

Can someone explain to me (like I'm five) what I LUN is and what a logical unit is? I've read explanations in the DCICN OCG (Official Cert Guide) book and resources on line, but it's just not clicking what these really are. It seems like a LUN can be...

I'm experiencing an issue on a single VLAN (Vlan80) where if i have any type of deny before 'permit ip any any' the latency jumps from 1ms to ~150ms for a ping and the network goes to a crawl.interface Vlan80 description Work Network 172.16.80.0/20 i...

Hi All,I am facing issues with Tacacs authentication on Nexus4001L switch. I have configured AAA and tacacs server details on Nexus4001l switch side but tacacs authentication is not working. AAA server is configured with correct details but due to so...

Hello,Can someone clarify the following about HyperFlex HX220c node1/ What is the purpose of the housekeeping drive ( also refered to as System/log drive) ?2/ On what drive ESXi is installed ( housekeeping, capacity..) ?3/ On what drive DPC VM is ins...

I am trying to run a Hyperflex command to get some info I was able to run some commands on the Web CLI but I need to run these 2 commands. How do I login to the controller or springpath and get the info? cat /var/log/springpath/diskslotmap-v2.txtsysm...

Hi AllI've had a google but I can't find the answer to this....I normally use device-aliases which map a friendly name to one wwpn.Is it possible for the device-alias to contain MORE THAN ONE wwpn? for exampleFabricA/zone A_1->server_hbaA->storage_po...

Hi, Trying to setup an F port port-channel to a upstream Nexus UCS and following the documentation I need to apply the rate-mode shared to the interfaces that will participate in the port-channel, however when I run the configuration command in inter...

stcli cluser info returns incomplete node information, I also have one computer only node that was added with a FQDN instead of the address and it doesn't show up in hyperflex connection as a node, but works fine.   dnsServers:nodeIPSettings:10.1.100...

My storage engineers are seeing latency they are attributing to the network 20-30ms to from Dell/VMWare ESX servers - as seen in the Dell management utility. Dell blames the network and says the problem is that Flow Control is not enabled.  When I we...

I have been tasked with setting up a new fairly traditional UCS environment with MDS9148s.  Initially it appeared to be a green-field site with only UCS, 2 x 9148s and a new storage array,  possibly a handful of new bare-metal servers.Here's the curv...