40
Space, cost and energy savings
OGY
David Galton-Fenzi, Group Sales Director at Zycko UK, offers some advice on
choosing the right storage virtualisation technology for your business.
TECHNOL
The data centre continues to underutilisation and wasted virtualisation architectures
evolve with the need for storage. In fact, the average each delivering the same final
TION
storage capacity growing so actual utilisation currently sits virtualised outcome: in-band,
quickly that many at around 40% - 50% out-of-band and host based.
organisations struggle to keep resulting in inefficient return Each architecture negates the
ALISA up. Even before the global on investment: a crime when need for applications or host
TU
economy took a nosedive, the technology to reduce this devices to have any direct
VIR
organisations were starting to wastage is readily available. control with storage partitions
look for the best way to re- The ramifications for the themselves, as a layer of
utilise their pre-existing business are both financial abstraction sits between them
storage capabilities. But now, and environmental, with and the physical storage
with the increasing popularity energy and space being devices. To decide which
of Server Consolidation, wasted on a vast scale. model is best for your
Virtualisation, Disaster business, it is necessary to
Recovery and Business Making better use of existing consider a number of factors,
Continuity, technologies such capacity is clearly the answer however the size of your data
as mirroring, cloning and here, and once an centre and the product types
snapshot technology add to organisation has recognised you are consolidating are
the data explosion we are this, they will cut expenditure major influencers.
seeing and have become a directly on additional
top business priority. hardware, and indirectly by In-band
reducing the man-hours When data is saved to a
The perpetual headache for IT required to monitor and storage device it consists of
managers is figuring out how maintain the new equipment. two parts, the data itself and
best to utilise the storage One of the easiest ways to do the control or metadata. The
they currently have available, this is through storage metadata provides essential
while still delivering consolidation. information on the data’s size,
improvements in service and location or ownership for
customer satisfaction. Employing a storage example.
Commonly, applications and virtualisation system enables
host devices have been the existing infrastructure to An in-band virtualisation
granted storage space simply fully optimise storage system, like the Hitachi USP-V
based on what they might use capacity, by treating it as a and USP-VM tiered storage
which has resulted in single resource as opposed to options, employs a virtual
systematic over-provisioning. separate entities. A virtual management device that
management system assesses combines the two strands into
However, few even come close the total space available, one message and then
to pushing these parameters, creates a virtual storage pool allocates the data to available
and the ones that do only do from the separate storage space in the partitions. This is
so on a temporary basis. The units and proceeds to allocate one of the most widely
result is an inefficient volumes accordingly. utilised virtualisation
scenario with mass There are three major storage architectures, and only
OCT 09 WWW.SNS-UK.CO.UK
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