| Sun StorageTek 6540 Array Hardware Installation Guide |     |
| Sun StorageTek 6540 Array Hardware Installation Guide | |
| C H A P T E R 3 |
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This chapter describes Sun StorageTek 6540 Array cable connections for hosts. It contains the following sections:
The management host directly manages Sun StorageTek 6540 Arrays over an out-of-band network. This section describes how to set up a connection between the Ethernet port of a controller (FIGURE 3-1) and the management host.
FIGURE 3-1 Ethernet Ports for Controller A and
Controller B
Note - Before you begin, ensure that the two required Ethernet cables are available. These requirements are outlined in the Sun StorageTek 6540 Array Site Preparation Guide. |
There are three ways to establish a connection between the management host and Ethernet port 1 of an array controller:
To attach the Ethernet ports to the local area network (LAN) of the management host:
1. Locate the Ethernet port 1 for Controller A and Controller B at the back of the controller tray (FIGURE 3-1).
2. Connect an Ethernet cable to Ethernet port 1 of each controller.
3. Connect the other end of each Ethernet cable to the LAN on which your management host resides (preferably on the same subnet).
To attach the Ethernet ports and the management port Ethernet interface to an Ethernet hub on a private subnet:
1. Locate Ethernet port 1 on Controller A and Controller B at the back of the controller tray (FIGURE 3-1).
2. Connect an Ethernet cable to Ethernet port 1 of each controller.
3. Connect the other end of each Ethernet cable to an Ethernet hub.
4. Connect an Ethernet port on the management host to the Ethernet hub.
Use this method to establish temporary IP connectivity between the management host and the controller’s Ethernet ports.
To attach the Ethernet ports directly to the management host using a cross-over cable, follow these steps for each controller, as necessary:
1. Locate Ethernet port 1 on either Controller A or Controller B at the back of the controller tray (FIGURE 3-1).
2. Obtain and connect an Ethernet cross-over cable to Ethernet port 1 of the controller.
3. Connect the other end of the Ethernet cross-over cable directly to your management host Ethernet port.
You can connect data hosts to access the Sun StorageTek 6540 Array through Fibre Channel (FC) switches to the array or directly to the array.
The Sun StorageTek 6540 Array has eight host connections, four per controller. To maintain redundancy, connect two data paths from each host, one to each controller.
| Note - If you have the Sun StorageTek Data Replication feature, and it is enabled, then Host port 4 is reserved for remote replication; otherwise, Host port 4 is available for use. |
You can connect the array to data hosts through external FC switches.
Before you connect data hosts, check that the following prerequisites have been met:
1. Locate the data host ports (Small Form-factor Pluggable [SFP] transceivers) at the back of the controller tray (FIGURE 3-2).
FIGURE 3-2 Data Host Ports
2. Connect each fiber-optic cable to the data host ports of Controller A and Controller B.
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Caution - Fiber-optic cables are fragile. Do not bend, twist, fold, pinch, or step on the fiber-optic cables. Doing so can degrade performance or cause data loss. |
3. Connect the other end of each cable to the external switch as shown in the graphics that follow.
FIGURE 3-3 shows the data hosts connected through switches with single connections.
FIGURE 3-4 shows the data hosts connected through switches with cross-connections.
| Note - The configuration in FIGURE 3-4 is not supported for use in a Sun Cluster environment. |
FIGURE 3-3 Cabling
Switches With Single Connections
FIGURE 3-4
Cabling Switches With Cross-Connections
4. Connect the cables from the switch to the HBAs for each data host.
A direct point-to-point connection is a physical connection in which the data host HBAs are cabled directly to the array’s host ports.
Before you connect data hosts directly to the array, check that the following prerequisites have been met:
1. Locate the data host ports at the back of the controller tray (FIGURE 3-2).
2. Connect a fiber-optic cable to each data host port on Controller A and Controller B that you intend to use.
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Caution - Fiber-optic cables are fragile. Do not bend, twist, fold, pinch, or step on the fiber-optic cables. Doing so can degrade performance or cause data loss. |
3. Connect the other end of each fiber-optic cable to a data host HBA.
FIGURE 3-5 shows an example of a direct host connection of two data hosts with dual HBAs.
FIGURE 3-6 shows an example of a direct host connection of three data hosts with dual HBAs.
FIGURE 3-5 Direct Connection to Two Hosts With
Dual HBAs
FIGURE 3-6 Direct Connection to Three Hosts
With Dual HBAs
After you have connected the management host and data hosts, you should verify the link rate of the trays and power on the arrays, as described in Chapter 4.
| Sun StorageTek 6540 Array Hardware Installation Guide | 819-6461-13 | |