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

• Capacity area. The capacity area for each server includes space for 15, 25, or 60 LFF hard disk drives, depending on the

model chosen. SATA and SAS 7.2K rpm drives are supported as well as SAS 15K rpm drives. Up to 4TB drives can be

configured. Solid state devices (SSDs) are also available in an LFF carrier.

HP ProLiant SL4540 servers were designed to be a part of enterprise-class solutions. As such, these servers offer key

enterprise features. Cluster management is supported using the HP Insight Cluster Management Utility. Sophisticated power

management is provided including Dynamic Power Capping and Asset Management with SL Advanced Power Manager. 94%

Platinum Plus efficient power supplies offer power discovery. A host of additional enterprise-class features make the HP

ProLiant SL4540 ideal for large-scale deployments in both enterprise settings and cloud service provider environments.

• Serviceability. In complex datacenters, scale-out data deployments need each node to be serviceable, and service times

need to be quick. With HP ProLiant SL4540 Gen8 servers, compute nodes are serviceable from the front (hot aisle) side of

the chassis. No cables need to be disconnected from the rear of the unit to service motherboard components. The I/O

module is serviceable from the rear of the chassis, and the I/O module and PCI cards can be swapped without having to

walk to the front of the unit. No cables cross a service zone, and the HDD backplanes are cable-less (and can be rapidly

swapped as well).

• Performance. Matching processor cores to spindles is one aspect of performance that is important for being able to

configure workload-specific server infrastructure. Another important aspect is the relationship of network performance

to compute or storage performance. HP ProLiant SL4540 Gen8 servers provide a truly balanced architecture, with

40Gbps of raw bandwidth on the network side and 48Gbps of raw bandwidth on the SAS controller side. Network

bandwidth requirements vary, so various I/O options are provided including Gigabit Ethernet, 10 Gigabit Ethernet, and

InfiniBand compatibility.

• HP SmartCache technology. HP SmartCache technology accelerates access times to most frequently-accessed data (hot

data). With support provided on the HP Smart Array P420i controller, HP SmartCache technology caches hot data on

solid-state devices (SSDs). This approach combines low cost, high capacity spinning media with fast, low-latency SSD

devices to dramatically accelerate performance over spinning media alone, at a fraction of the cost of an end-to-end

solid-state solution.

Figure 5. HP ProLiant SL4540 Gen8 Server (2 node configuration with top cover removed)

Red Hat Storage Server has not yet been tested with SSDs or HP SmartCache technology as of this writing. Future testing is under investigation.

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