Hot-swapping a FibreBridge 6500N bridge with a FibreBridge 7600N bridge

You can hot-swap a FibreBridge 6500N bridge with a FibreBridge 7600N bridge to replace a failed bridge or upgrade your bridge in a fabric-attached or a bridge-attached MetroCluster configuration.

1. Do one of the following:
   • If the failed bridge is in a fabric-attached MetroCluster configuration, disable the switch port that connects to the bridge FC port.
   • If the failed bridge is in a stretch MetroCluster configuration, use either one of the available FC ports.
2. From the ONTAP cluster prompt, remove the bridge undergoing maintenance from health monitoring:
   1. Remove the bridge:storage bridge remove -name bridge-name
   2. View the list of monitored bridges and confirm that the removed bridge is not present:storage bridge show
3. Properly ground yourself.
4. Turn off the power switch of the bridge.
5. Disconnect the cables connected from the shelf to the FibreBridge 6500N bridge ports and power cables.

   You should make note of the ports that each cable was connected to.
6. Remove the FibreBridge 6500N bridge that you need to replace from the rack.
7. Install the new FibreBridge 7600N bridge into the rack.
8. Reconnect the power cord and, if necessary, the shielded Ethernet cable.

   Attention

   Do not reconnect the SAS or FC cables at this time.
9. If configuring for in-band management, connect a cable from FibreBridge RS-232 serial port to the serial (COM) port on a personal computer.

   The serial connection will be used for initial configuration, and then in-band management via ONTAP and the FC ports can be used to monitor and manage the bridge.
10. If configuring for IP management, connect the Ethernet management 1 port on each bridge to your network by using an Ethernet cable.

    In systems running ONTAP 9.5 or later, in-band management can be used to access the bridge via the FC ports rather than the Ethernet port.

    The Ethernet management 1 port enables you to quickly download the bridge firmware (using ATTO ExpressNAV or FTP management interfaces) and to retrieve core files and extract logs.

11. If configuring for IP management, configure the Ethernet management 1 port for each bridge by following the procedure in section 2.0 of the ATTO FibreBridge Installation and Operation Manual for your bridge model.

    In systems running ONTAP 9.5 or later, in-band management can be used to access the bridge via the FC ports rather than the Ethernet port.

    When running QuickNAV to configure an Ethernet management port, only the Ethernet management port that is connected by the Ethernet cable is configured. For example, if you also wanted to configure the Ethernet management 2 port, you would need to connect the Ethernet cable to port 2 and run QuickNAV.

12. Configure the bridge.

    If you retrieved the configuration information from the old bridge, use the information to configure the new bridge.

    Be sure to make note of the user name and password that you designate.

    The ATTO FibreBridge Installation and Operation Manual for your bridge model has the most current information on available commands and how to use them.

    Note

    Do not configure time synchronization on ATTO FibreBridge 7600N or 7500N. The time synchronization for ATTO FibreBridge 7600N or 7500N is set to the cluster time after the bridge is discovered by ONTAP. It is also synchronized periodically once a day. The time zone used is GMT and is not changeable.
    1. If configuring for IP management, configure the IP settings of the bridge.

       To set the IP address without the QuickNAV utility, you need to have a serial connection to the FibreBridge.

       If using the CLI, you must run the following commands:set ipaddress mp1 ip-address set ipsubnetmask mp1 subnet-mask set ipgateway mp1 x.x.x.x set ipdhcp mp1 disabled set ethernetspeed mp1 1000

    2. Configure the bridge name.

       The bridges should each have a unique name within the MetroCluster configuration.

       Example bridge names for one stack group on each site:

       • bridge_A_1a

       • bridge_A_1b

       • bridge_B_1a

       • bridge_B_1b

       If using the CLI, you must run the following command:set bridgename bridgename

    3. If running ONTAP 9.4, enable SNMP on the bridge: set SNMP enabled

       If running ONTAP 9.5 or later, ONTAP will use in-band monitoring via the FC connection to the bridge, so you should leave SNMP disabled.

13. Configure the bridge FC ports.
    1. Configure the data rate/speed of the bridge FC ports.

       The supported FC data rate depends on your model bridge.

       • The FibreBridge 7600 bridge supports up to 32, 16, or 8 Gbps.

       • The FibreBridge 6500 bridge supports up to 8, 4, or 2 Gbps.

       Note

       The FCDataRate speed you select is limited to the maximum speed supported by both the bridge and the switch to which the bridge port connects. Cabling distances must not exceed the limitations of the SFPs and other hardware.

       If using the CLI, you must run the following command: set FCDataRate port-number port-speed

    2. If you are configuring a FibreBridge 7500N or 6500N bridge, configure the connection mode that the port uses to ptp.
       Note

       The FCConnMode setting is not required when configuring a FibreBridge 7600N bridge.

       If using the CLI, you must run the following command: set FCConnMode port-number ptp

    3. If you are configuring a FibreBridge 7600N or 7500N bridge, you must configure or disable the FC2 port.

       • If you are using the second port, you must repeat the previous substeps for the FC2 port.

       • If you are not using the second port, then you must disable the port:

         FCPortDisable port-number
    4. If you are configuring a FibreBridge 7600N or 7500N bridge, disable the unused SAS ports: SASPortDisable sas-port
       Note

       SAS ports A through D are enabled by default. You must disable the SAS ports that are not being used. If only SAS port A is used, then SAS ports B, C, and D must be disabled.
14. Secure access to the bridge and save the bridge's configuration.
    1. From the controller prompt check the status of the bridges: storage bridge show

       The output shows which bridge is not secured.

    2. Check the status of the unsecured bridge's ports: info
       The output shows the status of Ethernet ports MP1 and MP2.
    3. If Ethernet port MP1 is enabled, run the following command: set EthernetPort mp1 disabled
       Note

       If Ethernet port MP2 is also enabled, repeat the previous substep for port MP2.
    4. Save the bridge's configuration.
       You must run the following commands: SaveConfigurationFirmwareRestart
       You are prompted to restart the bridge.
15. Turn on Health Monitoring for the FibreBridge 7600N bridge.
16. Update the FibreBridge firmware on each bridge.

    If the new bridge is the same type as the partner bridge upgrade to the same firmware as the partner bridge. If the new bridge is a different type to the partner bridge, upgrade to the latest firmware supported by the bridge and version of ONTAP. See the section Updating firmware on a FibreBridge bridge.

17. Reconnect the SAS and FC cables to the SAS A and Fibre Channel 1 ports on the new bridge.

    The SAS port must be cabled to the same shelf port that the FibreBridge 6500N bridge had been connected to.

    The FC port must be cabled to the same switch or controller port that the FibreBridge 6500N bridge had been connected to.

    Note

    Do not force a connector into a port. The mini-SAS cables are keyed; when oriented correctly into a SAS port, the SAS cable clicks into place and the disk shelf SAS port LNK LED illuminates green. For disk shelves, you insert a SAS cable connector with the pull tab oriented down (on the underside of the connector). For controllers, the orientation of SAS ports can vary depending on the platform model; therefore, the correct orientation of the SAS cable connector varies.
18. Verify that the bridge can see all of the disk drives and disk shelves it is connected to.

    If you are using the...	Then...
    ATTO ExpressNAV GUI	In a supported web browser, enter the IP address of the bridge in the browser box. You are brought to the ATTO FibreBridge homepage, which has a link. Click the link, and then enter your user name and the password that you designated when you configured the bridge. The ATTO FibreBridge status page appears with a menu to the left. Click Advanced in the menu. Enter the following command and then click Submit to see the list of disks visible to the bridge: sastargets
    Serial port connection	Display the list of disks visible to the bridge: sastargets

    Example

    The output shows the devices (disks and disk shelves) that the bridge is connected to. Output lines are sequentially numbered so that you can quickly count the devices. For example, the following output shows that 10 disks are connected:

    Tgt VendorID ProductID        Type        SerialNumber
      0 LENOVO   X410_S15K6288A15 DISK        3QP1CLE300009940UHJV
      1 LENOVO   X410_S15K6288A15 DISK        3QP1ELF600009940V1BV
      2 LENOVO   X410_S15K6288A15 DISK        3QP1G3EW00009940U2M0
      3 LENOVO   X410_S15K6288A15 DISK        3QP1EWMP00009940U1X5
      4 LENOVO   X410_S15K6288A15 DISK        3QP1FZLE00009940G8YU
      5 LENOVO   X410_S15K6288A15 DISK        3QP1FZLF00009940TZKZ
      6 LENOVO   X410_S15K6288A15 DISK        3QP1CEB400009939MGXL
      7 LENOVO   X410_S15K6288A15 DISK        3QP1G7A900009939FNTT
      8 LENOVO   X410_S15K6288A15 DISK        3QP1FY0T00009940G8PA
      9 LENOVO   X410_S15K6288A15 DISK        3QP1FXW600009940VERQ
    

    Note

    If the text response truncated appears at the beginning of the output, you can use Telnet to access the bridge and enter the same command to see all of the output.
19. Verify that the command output shows that the bridge is connected to all of the necessary disks and disk shelves in the stack.

    If the output is...	Then...
    Correct	Repeat Step 18 for each remaining bridge.
    Not correct	Check for loose SAS cables or correct the SAS cabling by repeating Step 17. Repeat Step 18.

20. Reenable the FC switch port that connects to the bridge.
21. Verify that all controllers have access through the new bridge to the disk shelves (that the system is cabled for Multipath HA), at the system console of both controllers: run local sysconfig

    Note

    It might take up to a minute for the system to complete discovery.

    For example, the following output shows that the system is cabled for Multipath HA:

    Lenovo Release 9.6P5: Fri Dec 13 13:23:47 EST 2019
    System ID: 1231231231 (node_A_1); partner ID: 4564564564 (node_A_2) 
    System Serial Number: 700000123123 (node_A_1); partner Serial Number: 700000456456 (node_A_2) 
    System Rev: A4 
    System Storage Configuration: Multi-Path HA
    System ACP Connectivity: Inband Active 
    

    If the command output indicates that the configuration is mixed-path or single-path HA, you must correct the SAS and FC cabling because not all disk drives are accessible through the new bridge.

    Attention

    When the system is not cabled as Multipath HA, restarting a bridge might cause loss of access to the disk drives and result in a multi-disk panic.
22. From the ONTAP cluster prompt, add the bridge to health monitoring:
    1. Add the bridge, using the command for your version of ONTAP:

       ONTAP version	Command
       9.5 and later	storage bridge add -address 0.0.0.0 -managed-by in-band -name bridge-name
       9.4	storage bridge add -address bridge-ip-address -name bridge-name

    2. Verify that the bridge has been added and is properly configured: storage bridge show

       It might take as long as 15 minutes to reflect all data because of the polling interval. The ONTAP health monitor can contact and monitor the bridge if the value in the Status column is ok, and other information, such as the worldwide name (WWN), is displayed.

       Example

       The following example shows that the FC-to-SAS bridges are configured:

       controller_A_1::> storage bridge show
       
       Bridge              Symbolic Name Is Monitored  Monitor Status  Vendor Model                Bridge WWN
       ------------------  ------------- ------------  --------------  ------ -----------------    ----------
       ATTO_10.10.20.10  atto01        true          ok              Atto   FibreBridge 7600N   20000010867038c0     
       ATTO_10.10.20.11  atto02        true          ok              Atto   FibreBridge 7600N   20000010867033c0
       ATTO_10.10.20.12  atto03        true          ok              Atto   FibreBridge 7600N   20000010867030c0
       ATTO_10.10.20.13  atto04        true          ok              Atto   FibreBridge 7600N   2000001086703b80
       
       4 entries were displayed
       
        controller_A_1::>
       
       
23. Verify the operation of the MetroCluster configuration in ONTAP:
    1. Check whether the system is multipathed: node run -node node-name sysconfig -a
    2. Check for any health alerts on both clusters: system health alert show
    3. Confirm the MetroCluster configuration and that the operational mode is normal: metrocluster show
    4. Perform a MetroCluster check: metrocluster check run
    5. Display the results of the MetroCluster check:metrocluster check show
    6. Check for any health alerts on the switches (if present): storage switch show
24. Return the failed part to Lenovo as described in the RMA instructions shipped with the kit.

    Contact technical support at Lenovo Support if you need the RMA number or additional help with the replacement procedure.