Windows | 2008 R2 | x86, x64 | Supported ATTO | MPIO/DSM, |
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| HBAs(future) | ATTO) |
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Windows | Windows 7 | x86 | Supported ATTO | ATTO |
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| HBAs |
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Windows | Vista | x86 | Supported ATTO | ATTO |
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| HBAs |
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Windows | XP | x86 | Supported ATTO | ATTO |
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| HBAs |
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Mixed |
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| As appropriate above | As |
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| appropriate |
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| above |
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SOLUTION RESTRICTIONS AND RECOMMENDATIONS
There are several important aspects to the configuring of the SAN that must be understood. The first is that the SAN design is architected to avoid logical drive failover in the storage subsystem. This is accomplished by employing a meshed fabric where each HBA on the server can see both controllers on the storage subsystem. The second aspect has to deal with access to the shared logical drives. There are three types of data to store on the shared logical drives; Metadata, Journal, and Data. All systems (MDCs and Clients) must be able to see the Data LUNs. The MDCs must also be able to both see the Metadata and Journal LUNs. It is important that the clients do not have access to the Metadata or Journal LUNs. When configuring the storage partitioning within the storage subsystem, the methodology is as follows:
•All HBAs in the MDCs will be defined within a single host definition (called MDCs?). This host definition will have the Metadata and Journal LUNs directly mapped to this host definition.
•All Clients have their own host definitions. If desired, all clients that have the same OS can have their HBAs combined within a single host definition.
•All Clients and the MDCs will be assigned to a single host group (called StorNext?). All of the Data LUNs will be assigned to that host group.
| HBAs | Connections | Zone |
MDC | Single or | Up to four | All ports see Controller A and Controller B on |
| multiple (typical) |
| DSxxxx |
MDC - Limit number of defined paths to optimize initialization time. There are few MDCs in | |||
comparison to clients, so this choice should not be as restrictive as below. This is not a hard | |||
requirement, but is recommended. |
| ||
Most configurations consist of two MDCs for high availability. Both MDCs must have the | |||
same configuration; OS, HBAs, Driver Levels, etc | |||
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Client | Single (typical) | Up to two | All ports see Controller A and Controller B on |
| or multiple |
| DSxxxx |
Client – | Limit number of defined paths to four to optimize initialization time. This is not a hard | ||
requirement, but is recommended. |
| ||
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Digital Media Storage Solution Installation Guide | 15 | ||
© Copyright 2010, IBM Corporation. All rights reserved. |
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