Cabling a minimum cluster configuration

What about the existing fibre channel loop?

The existing fibre channel loop on your filers is the Channel A loop in a minimum cluster configuration.

For an F630 filer

The cabling for the minimum configuration should be as shown in the following figure.

For an F740 and an F760 filer

The cabling for the minimum configuration should be as shown in the following figure.

In a maximum configuration, this is one of the Channel A loops in your cluster.

How to terminate the Channel B loop in a minimum configuration

To terminate the Channel B connections of the disk shelves in your minimum cluster configuration, follow these steps.


Step	Action
1	Place a terminator on the LRC Output/Terminator connector of the Channel B LRC card. Caution: Do NOT complete the Channel B loop to the partner filer. If you complete the Channel B loop to the partner filer and reboot, the filers try to take ownership of both sets of disks and cause permanent damage to your file systems.
2	Repeat Step 2 for the partner filer. (The Channel A cabling that you did previously is also shown.)
	For an F630 filer The result is as shown in the following figure.
	For an F740 and an F760 filer The result is as shown in the following figure.

3	Proceed to "How to connect the filers in a minimum configuration."

How to connect the filers in a minimum configuration

To connect the filers, follow these steps.


Step	Action
1	Run a `cf status` command on each filer. The resulting output should be as follows: cluster monitor not initialized. Interconnect is down.
2	Using the 4m cluster interconnect cable, connect the X port of the cluster interconnect adapter on one filer to the X port on the partner filer. Perform a `cf status` on each filer. The resulting output should be as follows: cluster monitor not initialized. Y link is down. Note: The cluster interconnect adapter has two ports; the X port is above the Y port. Caution: Verify that you connected the cable to the Y port. Connecting to the wrong port disables the takeover feature.
3	Using the 4m cluster interconnect cable, connect the Y port of the cluster interconnect adapter on one filer to the Y port on the partner filer. Perform a `cf status` on each filer. The resulting output should be as follows: cluster monitor not initialized. Note: The cluster interconnect adapter has two ports; the Y port is below the X port. Caution: Verify that you connected the cable to the Y port. Connecting to the wrong port disables the takeover feature.
4	At the consoles of each filer, enter `halt` to shut down the system.
5	Connect the filer to the Channel B LRC card on disk shelf 0 of the partner filer by Connecting the HSSDC end of the FC-AL filer-to-shelf cable to the FC-AL adapter labeled Channel B on the filer Connecting the DB-9 end of the FC-AL filer-to-shelf cable to the Input connector of the LRC card labeled Channel B on disk shelf 0 of the partner filer Note: Apply a label on each end of the filer-to-shelf cable.
6	Repeat Step 5 for the partner filer. Note: These figures only show how to complete the Channel B loop to the partner filer; they do not show the cabling between the cluster interconnect adapters in both filers. The cabling between the cluster interconnect adapters is not shown in these figures to reduce the possible confusion resulting from the number of cables involved.
6	For an F630 filer The following figure illustrates the completed cabling for the Channel B loops in a minimum configuration.
7	For an F740 and an F760 filer The following figure illustrates the completed cabling for the Channel B loops in a minimum configuration.
7
8	At the console of each filer, enter `boot` to run the filers.

Part No. 210-02327
File: cluster3.htm
Last updated: 02/22/99 13:18:57