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Technical white paper | HP RA for Red Hat Storage Server on HP ProLiant SL4540 Gen8 Server

One-, two-, and three-node HP ProLiant SL4540 Gen8 servers

HP understands that different applications and storage-related deployments require differing core-to-spindle ratios. The HP

ProLiant SL4540 Gen8 server line offers different numbers of compute nodes, with different numbers of disk spindles

supported by each compute node. While the use cases described in this document are ideal for the two-node HP server, Red

Hat Storage Server can be run on any of the configurations as shown in Figure 19.

• One-node HP ProLiant SL4540 Gen8 Server. The one-node chassis supports a single compute node and as many as 60

attached disk drives. For the largest archival, object storage, or transient data applications with less need for compute

performance scalability, the one-node HP ProLiant SL4540 Gen8 server enables maximum capacity scalability.

• Two-node HP ProLiant SL4540 Gen8 server. The two-node chassis supports more symmetrical application use cases,

where some amount of computational power is required along with scalable data storage, density, and efficiency. Each of

the two nodes in the chassis supports up to 25 drives. The large file and object store, enterprise drop box and cloud

storage, and near-line archive use cases described herein are all ideal applications for the combination of the two-node

HP ProLiant SL4540 Gen8 server and Red Hat Storage Server.

• Three-node HP ProLiant SL4540 Gen8 server. The three-node chassis provides an ideal platform for big data analytics

applications such as Hadoop. With three compute nodes, each supporting up to 20 cores and up to 15 disk drives, the

server exceeds the ideal 1:1 spindle to core ratio needed for the frequent interaction between processors and data

dictated by many big data analytics applications.

Figure 19. One-node, two-node, and three-node HP ProLiant SL4540 Gen8 servers can all run Red Hat Storage Server to meet a range of

application and capacity needs.

Server sizing for use cases

Individual HP ProLiant SL4540 Gen8 servers are widely configurable in terms of processors, memory, disks, and I/O to

match specific workload requirements. While specific sizing recommendations are beyond the scope of this document,

general recommendations can be made for configuring individual two-node HP ProLiant SL4540 Gen8 servers for use in

scale-out storage configurations with Red Hat Storage Server. For all configurations, dual processors are recommended.

HP ProLiant SL4540 Gen8 servers support 4-, 6-, 8 -, and 10-core Intel E5-2400 and E5-2400 v2 series processors,

depending on workload requirements. For the workloads described herein, processor performance is not typically a

bottleneck. As a result, most deployments can deploy two quad-core Intel E5-2407 processors per node. Scenarios

requiring higher computing requirements may wish to deploy processors with larger core counts.

• Large file and object store. For a large file and object store, HP and Red Hat recommend 48GB of DRAM for storage node

system memory. Either 2TB SAS 7.2K rpm or 15K rpm drives are well suited for this application.

• Enterprise drop box or cloud storage. For enterprise drop box or cloud storage, HP and Red Hat recommend 48GB of

DRAM for storage node system memory. Either 2TB or 3TB SAS 7.2K rpm or 15K rpm drives can be used for storage.

• Near-line archival. Near-line archival tends to be more focused on capacity than performance. For this reason, HP and

Red Hat recommend 32GB of DRAM for storage node system memory. To maximize capacity, 3TB or 4TB SATA 7.2K rpm

drives can be used for storage.

Up to

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One-node

HP ProLiant

SL4540 Gen8 Server

Two-node

HP ProLiant

SL4540 Gen8 Server

Three-node

HP ProLiant

SL4540 Gen8 Server

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