Dell PowerEdge R820 review

Dell’s PowerEdge R820 is the first Xeon E5-4600 production server to market. We take a look at this compact four-socket server, which can be used to manage heavy duty databases, virtualisation, HPC and VDI hosting.

Price
£12,563

Dell consistently beats its rivals to market with new server technology, so it's no surprise the PowerEdge R820 sports Intel's latest Xeon E5-4600 processors.

When Intel launched its Xeon E5-2600 CPUs in March, their vital statistics were known well in advance, but not so with the E5-4600 family. This group consists of eight models ranging in speeds from 2GHz up to 2.9GHz with 4, 6 or 8 cores and 10MB, 12MB, 15MB, 16MB or 20MB L3 caches.

The R820 was equipped with a quartet of 6-core 2.2GHz E5-4607 Xeons which had a 12MB L3 cache, a 6.4GT/sec QPI and a low 95W TDP. These models support memory speeds up to 1066MHz and Intel's HyperThreading, but not Turbo Boost.

The E5-4600 family is designed for scalable dual and glue-less quad-socket platforms. As with the E5-2600s, they have two QPI links per socket supporting speeds up to 8GT/sec and in a 4P system will connect with adjacent sockets in a ring architecture.

Dell PowerEdge R820

In a 4P configuration the T820 uses a mezzanine card which sits on top of the main motherboard

Memory and storage aplenty

A key feature is memory capacity. The 4P system supports 48 DIMM sockets and can scale up to 1.5TB using 32GB LR-DIMMs. You may think this puts it in direct competition with the Xeon E7 but Intel has positioned the E5-4600 as a better choice where a balance of cost, performance, power consumption and memory capacity is required.

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The R820 uses a similar chassis to the PowerEdge R720 and so has a good range of storage options. It supports 16 SFF hard disks and there's also an option with eight standard SSF bays and four hot-plug PCI-e Express Flash SSDs.

RAID options start with the basic PERC H310 entry-level adapter but review price includes the top dog PERC H710P PCI-e card which supports RAID-6 and has a 1GB NVRAM cache so doesn't need a battery backup. It uses an LSI chip and you can enable its optional CacheCade feature which optimises read activity from an SSD based cache.

Dell PowerEdge R820

Dell's new iDRAC7 management controller provides comprehensive power monitoring tools

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