HP StorageWorks Scalable File Share - Manual (Page 16)

Figure 1-2 Server Pairs
Figure 1-2 shows typical wiring for server pairs.
1.3.1.1 Server Memory Requirements
The Lustre Operations Manual section 3.1.6 discusses memory requirements for SFS servers. These
should be regarded as minimum memory requirements. Additional memory greatly increases
the performance of the system. HP requires a minimum of 4 GB for MGS and MDS servers, and
minimum memory for OSS servers according to the following guidelines, based on the number
of OSTs connected to the OSS server pair, at a rate of 2 GB per OST:
• 8 GB:
— 2x [MSA2000fc + 1xJBOD] = 4xOSTs per OSS pair = 2xOST per OSS
• 16GB:
— 4x [MSA2000fc + 1xJBOD] = 8xOSTs per OSS pair = 4xOST per OSS
— 2x [MSA2000fc + 3xJBOD] = 8xOSTs per OSS pair = 4xOST per OSS
• 32 GB:
— 4x [MSA2000fc + 3xJBOD] = 16xOSTs per OSS pair = 8xOST per OSS
More memory for the servers increases performance and is recommended when budgets allow.
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