Samsung 840 White Paper page 11

similar to a single SSD. Its purpose is redundancy. As such, the array will continue to operate as long as at least one drive
is still functioning. Capacity is limited to the size of the smallest drive in the array. The primary goal is to reduce downtime
in the event of a hardware failure. However, this solution, despite its redundancy, is not a replacement for a good backup
regimen, as it cannot protect from data corruption or security breaches.
Who should use RAID?
Any desktop user can implement RAID on their system with relative ease, but only a certain subset of users will be able
to truly justify the expense and benefit from what it has to offer. As outlined above, each implementation has a different
purpose.
RAID 0, thanks to its incredibly fast read and write speeds, is ideal for an individual who must work with large files that
need to be modified or written quickly, such as a graphic designer who spends a lot of time in Adobe Photoshop or
a videographer who uses Avid to edit digital video files. Some gamers also enjoy the performance advantages that
RAID 0 provides. Because it lacks redundancy, however, RAID 0 is not suited for mission-critical tasks and should be
supplemented by a robust backup system.
RAID 1, which writes all data identically to two or more drives, is ideal for mission-critical workloads, such as small servers,
that cannot experience significant downtime. The speed is the same as it would be with a single disk, so there is no
performance advantage or disadvantage. The sole benefit is its redundancy, which will make it easier to get up and
running in the event that one SSD fails. As mentioned above, RAID 1, despite its redundancy, is not an alternative to a
solid backup. It cannot protect against user error (e.g. inadvertently deleting files) or data corruption.
Why Samsung
Samsung, as the largest supplier of SSDs to the preinstalled market, must qualify its SSDs on an endless variety of
hardware configurations, including all current and legacy SATA interfaces. Its SSDs are designed to outperform the
competition on all SATA implementations, making a Samsung SSD the smartest choice for any PC upgrade, regardless of
whether it is an aging or a state-of-the-art system.
Parallelism improves performance
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