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Large numbers of enterprise servers are operating at significantly
below their physical capacity.
The operating speeds of current processor designs are such
that they are outstripping the demands made of them by the
operating systems and applications that they run. Under utilisation
is exacerbated where applications are run infrequently as,
for example, with end-of-period processing and reporting.
It is not unusual to for servers to consistently experience
single-digit percentage CPU utilisation figures. Sharing resources
can be technically complex on physical servers and is commonly
discouraged by software vendors because of the probability
of conflicts and resource contention, leading to system corruption
or instability. Poor utilisation adds to the cost of IT infrastructures
and to the difficulty and expense of owning and managing them.
Server Virtualisation addresses this problem by allowing
multiple different operating systems and applications to run
concurrently on the same physical hardware, in safety and
isolation. The virtualisation software layer allows operating
systems and applications to be consolidated and run on a mix
of hardware, and to move operating virtual servers between
host physical servers on-the-fly. The virtual servers can
be managed as if hosted on a single, standardised hardware
platform.
Running many instances of operating systems and applications
on one server or an array of servers allows hardware capacity
to be better and more fully utilised. Capacity not currently
being used by one virtual server is available for use by another,
greatly reducing wasted idle time. In practice, it is possible
to raise the utilisation level of physical servers to 80 per
cent or higher, allowing maximum benefit to be realised from
each server purchase.
| Virbis
Server Virtualisation Product Portfolio
Virbis is an authorised solution centre of best-of-breed
Server Virtualisation products from market-leading vendors,
including EMC VMware and Platespin. We offer a wide
range of consulting, design, engineering and troubleshooting
services for these solutions, all of which are delivered
by vendor-trained and accredited staff. Vendor authorised
and accredited product training can be arranged on request.
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