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CCIE DC UCS Storage

posted Jun 23, 2014, 9:34 PM by Rick McGee
Fabric Interconnects Modes

    End Host (NPV) (default and recommended)
        FCoE is performed from Server/Chassis up to FI's 
        
        FCoE is decapsulated, and FLOGI's turned into FDISC's and 
        transmitted to upstream FC switch F-Port running in NPIV
        mode 
        
        FCoE Northbound of FI's is supported in 2.1 (Del Mar)

    FC Switching Mode 
        Limited use 
        
        No zoning configuration in 2.0 - get's zoning form
        upstream switch (Zoning is support in UCS Mgr. 2.1)
        
        For UCS 2.0 upstream switch must be a MDS or Nexus 5K to 
        get zoning
    
        FC Switching is necessary for storage array direct connect

        Designed for very small scale or demo environments 

    HBA's and pWWN's 
        Presented as 2 normal HBA's to OS using standard PCIe virtualization 

        Standard OS level Multipathing software 
            PowerPath /DMP/MPIO
            No hardware failover (standard for Fibre Channel Network)

        WWN/pWWN
            Emulex and Qlogic and Burn In Addresses (BIA)

            M81KR/PALO/VIC don't have a BIA

            There are three for pWWN usages
                Derived form the BIA (Only for Emulex or Qlogic)
                Manually assign 
                From a Pool 

        VSAN's Trunking and Port Channels 
                Can have an ISL with multiple VSAN's heading northbound out of the FI to FC Fabric
                
                Cannot limit which VSAN's head northbound our of FI (they all do) in 2.0
                
                Can limit which VSAN's are allowed to transverse onto the NB switch from MDS/N5K
                trunk 
                
                Limit of 32 VSAN's per UCS system

                Port Channel can and should be used with trunking

                Can use up to 16FC interfaces in a  Port Channel 
                    Hasing algorithm uses Src, Dst, and Exch ID (OxID (originator exchange identifier) - same as 
                    N5K
                    Non Configurable 

                Both Port Channeling and Trunking work in both NPV and FC Switching modes
                    (remember FC Switching mode you need MDS or N5K F-PortChannel mode)
                        If you don't use Port-Channeling, vHBA would need to re-FLOGI
                        need to enable "feature fort-channel-trunk" on MDS

            Direct Connect FC or FCoE Storage 
                Must be in FC Switching mode
                    Remember FC and Ethernet modes are independent 

           Still must have upstream FC/FCoE switch to configure zoning (in 2.0)
                Reasoning behind the need for a MDS or N5K for zoning

            Would only use if you have to transition between FC and FCoE 
            
            Switching will be local on FI's and they do get a FC domain ID
                
Configuration 

Topology 


Click on the SAN TAB in UCS manger 
    You'll see the following 
You'll see all FC interfaces that we configured in the beginning. 

Click on SAN Cloud and then SAN Uplinks Manager

You'll notice that the Uplink mode is in end-host not Fibre Channel Switching

On MDS's make sure the configuration for the Ports are current 

show run int fc1/7-8


Check the Port-Channel settings
sho run int po2
You'll see under PO2 the switchport mode is forced to F. Also in the port-channel summary it shows the total ports equal to two and the First Port in the PO is FC1/7 

show run | in feature (to make sure the correct features are enabled)


Back in UCS Manger click on SAN Tab, click on SAN Cloud, and right click on Fabric A and click Create Port-Channel


Name the Port-Channel
 
Give it a name Po1 with an ID of 11

Choose Ports and click finish, and repeat for FI-B

Next enable Port Channel

You'll now see that all Port-Channels are up and Enabled


VSAN Creations 

You can see as with the LAN tab you have the same VSAN options where you can create VSAN's indecently on FI-A or FI-B or Common\Global for both.

You also have some pre-defined policies that get assigned to the vHBA's and you can also create your own if needed.


You can do a show flogi database to make sure the FI's have logged into the fabric correctly and you can see the WWPN form the Equipment Tab, click on FI A, Click on Physical Ports, and finally  click on Uplink FC ports

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