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Software Defined Storage Rev. 2.0 - TN

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Virtualising servers and storage systems has become<br />

a vital part of an organisation’s IT strategy, no matter<br />

how small the company is. The key objectives behind<br />

virtualisation include optimising hardware resources<br />

by consolidating them, increasing flexibility and<br />

reducing the costs for energy, cooling or space requirement.<br />

<strong>Storage</strong> virtualisation, just as server virtualisation,<br />

leverages the existing physical resources,<br />

centralises and simplifies management and can increase<br />

availability by deploying live migration. In this<br />

way, your administrators can transfer virtualised<br />

environments from a physical server to another without<br />

any system or operating downtimes.<br />

<strong>Storage</strong> virtualisation leverages existing capacities<br />

by delivering a fast and flexible supply of the required<br />

storage capacities. For a long time, individual applications<br />

were allocated with fixed storage resources in a<br />

storage pool.<br />

5%<br />

Although the average IT budget grows by a<br />

maximum of 5% each year, the IT landscape<br />

is faced with increasingly more tasks that it<br />

has to manage within the organisation.<br />

Virtual storage machines<br />

This created a typical over-provisioning scenario as<br />

many of the applications did not utilise the storage<br />

resources allocated to them. This is now over – thanks<br />

to thin-provisioning which provides a method for optimising<br />

utilisation of available storage capacities.<br />

This results in an efficient allocation of data to improve<br />

fast access and performance.<br />

Virtual storage<br />

identity<br />

Host I/O and copy<br />

management<br />

Virtual<br />

hardware<br />

Processors, cache,<br />

front-end ports,<br />

storage media<br />

Virtual storage<br />

identity<br />

Host I/O and copy<br />

management<br />

Virtual<br />

Hardware<br />

Processors, cache,<br />

front-end ports,<br />

storage media<br />

Virtual storage software<br />

3

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