2.2.1 Design Details
The design of the SAN provides the following benefits:
-
Has no single point of failure
-
Minimum of 2 paths from each component to SAN fabric
-
Minimum performance impact to I/O subsystem with single device failures
-
Leverages multi-path to maximize throughput on I/O
-
Uses standard configurations
-
Provides ase of maintenance
The SAN consists of 2 independent fabrics in a mesh topology. All storage and hosts connect to both fabrics. Each fabric is made up of 3 switches connected through ISL's to form a mesh configuration, as shown in the following figure.
Figure 2–2 Storage Area Network (SAN) Design
The following table lists the domain and ISL ports for each switch in the two SAN fabrics.
Table 2–2 Switch Details for Each SAN Fabric|
Fabric Name |
Switch Name |
Domain ID |
Switch Location |
ISL Ports |
|---|---|---|---|---|
|
SAN A |
fs-amer-01 |
11 |
rack-amer-03 |
0, 1, 2, 3 |
|
SAN A |
fs-amer-03 |
13 |
rack-amer-03 |
0, 1, 2, 3 |
|
SAN A |
fs-amer-05 |
15 |
rack-amer-03 |
0, 1, 2, 3 |
|
SAN B |
fs-amer-02 |
12 |
rack-amer-04 |
0, 1, 2, 3 |
|
SAN B |
fs-amer-04 |
14 |
rack-amer-04 |
0, 1, 2, 3 |
|
SAN B |
fs-amer-06 |
16 |
rack-amer-04 |
0, 1, 2, 3 |
2.2.1.1 Zones Considerations
-
McData 4500 switches only support one zoneset to configure and activate any point.
-
All zones in a fabric configured based on the world-wide names (WWN) of the nodes and storage system.
-
Default zones in fabric are disabled and all ports not in use are disabled in order to avoid.
-
There are separate zones for each cluster, backup and management network.
-
All ports connecting to tape drives will have RSCN (Registered Change Notification) disabled in order to avoid the interruptions to backups.
-
All configuration are backed up periodically and all changes to SAN configurations will need careful evaluation and review.
2.2.1.2 Port Numbers
The following table describes the port assignments for hosts and storage arrays.
Table 2–3 Port Numbers for Connections to SAN|
SAN A |
SAN B |
|||||
|---|---|---|---|---|---|---|
|
Host Name |
fs-amer-01 |
fs-amer-03 |
fs-amer-05 |
fs-amer-02 |
fs-amer-04 |
fs-amer-06 |
|
ISL's |
ports 0,1,2,3 |
ports 0,1,2,3 |
ports 0,1,2,3 |
ports 0,1,2,3 |
ports 0,1,2,3 |
ports 0,1,2,3 |
|
phys-bedge1–1 |
port 4 slot 2 |
port 5 slot 4–1 |
port 4 slot 4–0 |
port 5 slot 5 | ||
|
phys-bedge2–1 |
port 4 slot 2 |
port 5 slot 4–1 |
port 4 slot 4–0 |
port 5 slot 5 |
||
|
phys-bedge3–1 |
port 5 slot 4–1 |
port 4 slot 2 |
port 5 slot 5 |
port 4 slot 4–0 |
||
|
phys-bedge4–1 |
port 6 slot 2 |
port 7 slot 4–1 |
port 6 slot 4–0 |
port 7 slot 5 | ||
|
phys-bedge5–1 |
port 6 slot 2 |
port 7 slot 4–1 |
port 6 slot 4–0 |
port 7 slot 5 |
||
|
phys-bedge1–2 |
port 7 slot 4–1 |
port 6 slot 2 |
port 7 slot 5 |
port 6 slot 4–0 |
||
|
phys-bedge2–2 |
port 8 slot 2 |
port 9 slot 4–1 |
port 8 slot 4–0 |
port 9 slot 5 | ||
|
phys-bedge3–2 |
port 8 slot 2 |
port 9 slot 4–1 |
port 8 slot 4–0 |
port 9 slot 5 |
||
|
phys-bedge4–2 |
port 9 slot 4–1 |
port 8 slot 2 |
port 9 slot 5 |
port 8 slot 4–0 |
||
|
phys-bedge4–2 |
port 10 slot 2 |
port 11 slot 4–1 |
port 10 slot 4–0 |
port 11 slot 5 | ||
|
amer-minnow-01 |
port 22 chl 0 |
port 23 chl 1 |
port 20 chl 5 |
port 21 chl 4 | ||
|
amer-minnow-03 |
port 22 chl 0 |
port 23 chl 1 |
port 20 chl 5 |
port 21 chl 4 |
||
|
amer-minnow-05 |
port 23 chl 1 |
port 22 chl 0 |
port 21 chl 4 |
port 20 chl 5 |
||
|
amer-minnow-02 |
port 20 chl 0 |
port 21 chl 1 |
port 22 chl 5 |
port 23 chl 4 | ||
|
amer-minnow-04 |
port 20 chl 0 |
port 21 chl 1 |
port 22 chl 5 |
port 23 chl 4 |
||
|
amer-minnow-06 |
port 21 chl 1 |
port 20 chl 0 |
port 23 chl 4 |
port 22 chl 5 |
||
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