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Unlike a rack-mount server, a blade server fits inside a blade enclosure, which can hold multiple blade servers, providing services such as power, cooling, networking, various interconnects and management. Together, blades and the blade enclosure form a blade system, which may itself be rack-mounted.
The VRTX system is partially based on the Dell M1000e blade-enclosure and shares some technologies and components. There are also some differences with that system. The M1000e can support an EqualLogic storage area network that connects the servers to the storage via iSCSI, while the VRTX uses a shared PowerEdge RAID Controller (6Gbit PERC8).
PowerEdge machines come configured as tower, rack-mounted, or blade servers. Dell uses a consistent chip-set across servers in the same generation regardless of packaging, [ 1 ] allowing for a common set of drivers and system-images .
Different models are or were available as towers, 19-inch racks or blades. In the current naming scheme, towers are designated by T, racks by R, and blades by M (for modular). [1] The 19″ rack-servers come in different physical heights expressed in rack units or U. Most modern servers are either 1U or 2U high while in the past the 4U was more ...
They are made specially for use in a blade enclosure and cannot be used without such. Blade systems aim towards maximum density and manageability at limited rack space. There are two models of blade enclosures: HPE BladeSystem c3000 Enclosure (8 Bays for Blades), and HPE BladeSystem c7000 Enclosures (16 Bays for Blades).
All versions of the enclosure occupy 10 rack units and can accommodate up to 16 half-height blade servers. It includes space for 6 power supplies ( single-phase , three-phase or a −48V DC), 10 cooling fans , 8 single-wide (such as 1/10 Gbit/s Ethernet or 8/16 Gbit/s FC) or 4 double-wide (such as 40 Gbit/s Ethernet or Infiniband) interconnect ...
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The system could comprise traditional rack-optimized nodes, as well as IBM BladeCenter, Flex System or iDataPlex blade nodes, or another rack-mounted servers [7] [8] with processor choices between x86-based (Intel Xeon and AMD Opteron) or uncommon Power-based processors options (only for blade servers), [7] along with integrated storage and ...