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Storage virtualisation – the lie of the land
It is fair to say that storage virtualisation, at least at a fundamental level,
YSIS
should be familiar to most people in IT since we have lived with it in the
world of hard disks for many years. By Jon Collins, Service Director at
Freeform Dynamics.
ANAL
As a simple example, storage since many disks are multiple types of storage from
Y
Microsoft Windows users are combined to look and behave different suppliers to be
used to having multiple like one logical drive to the connected together into a
logical drives set up on one application. single storage pool, which can
physical hard disk, each of then be logically sub-divided
INDUSTR which can run out of space Today the use of the term and allocated as required to
without impacting the amount ‘virtualised storage’ tends to meet the needs of users,
of space available on another refer to instances where a groups and applications
logical drive. This separation series of discrete storage based on business policies
of physical storage from its devices are connected together, and operational criteria.
logical representation is a key usually though not always, by
principle of storage some form of high-speed A good question might be, is
virtualisation. network and made to act as a storage virtualisation really a
single storage environment, mainstream technology, or
This principle is part of the for example as part of a Storage would I be out on a limb
bigger picture of enterprise- Area Network (SAN) or as a investing in this area today?
level storage virtualisation Network Attached Storage (NAS). Virtualisation itself is a hot
practice. RAID arrays are one A range of vendors today topic – so where does storage
form of pooled, virtual provide technologies enabling virtualisation fit?
OCT 09 WWW.SNS-UK.CO.UK
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