"CDs, DVDs, and Blu-ray discs are an economical and
versatile method to back up, transport and distribute files. Single
layer discs offer 700MB, 4.7GB, and 25GB capacity respectively.
There are also dual layer media available for DVDs and Blu-ray
formats which double capacity. Even with large capacities, write
times are quick. For example, the Pioneer BDR-205 offers 12x
Blu-ray write speeds, and whilst there isn't media designed to
write at that speed, it only takes approximately 10 minutes to fill
up a 25GB BD-R disc.
"These days optical media is also keenly priced. CD media can be
purchased for less than 10p each, whereas single layer DVDs and
Blu-rays can cost as low as 20p and £1.50 respectively when
purchased in spindle packs. Two UK retailers which we highly
recommend for blank media are SVP and 7dayshop.com, the latter
offering free postage which makes it ideal when you only need to
purchase a few discs. Further, as their business is located in the
Channel Islands there is no VAT (sales tax) payable for items under
"Besides the price attractivenes of optical discs, an additional
attribute is that they are highly portable. One factor to bear in
mind in any backup strategy is to ensure that your data is held at
a different location, to prevent data loss in the event of say fire
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