Specification Sheet

Zone filing
One of the most important features that makes O&O Defrag superior to other defragmentation
solutions is its ability to divide drives into zones, and separate databases into files that are
performance critical and non-critical. The consolidation of free disk space that’s achieved by any
decent defragmentation tool already results in a noticeable increase in performance. O&O Defrag,
how-ever, uses the concept of zone filing to go one logical step further.
After defragmentation, a special algorithm sees to it that data on the disk is placed in its optimal
position. In this way, files are sorted according to the way they’re used and their access frequency,
and then moved into zones. An example of how this works is by separating system and program files
that require very fast access from user data that tends to be more frequently fragmented. As a result
of further separating files according to their write frequency, fragmentation can be intelligently and
proactively avoided. Thanks to this logical grouping, the time needed for program and system starts
is shortened. Successive defragmentation can also be executed much faster, and a fully superfluous
mixing of program files with fragmented user data can be excluded from the outset.
Defragmentation of large disks in the terabyte range
O&O Defrag works without restriction on all drives and drive types that are correctly recognized and
controlled by Windows. Internal and external RAID systems, SANs, and crash proof storage clusters
are fully supported, regardless of their manufacturer. Standard hard disks can currently reach a
capacity of 3 TB. The most frequently used MBR partitioning is still only able to use a maximum of
just 2 TB. In order to use the entire disk space of such an enormous drive, it needs to be partitioned
using GPT system partitioning.
With O&O Defrag, you make an investment in the future. To help you avoid any limits on using
all the space of such large drives, standard MBR partitioning and dynamic volumes as well as GPT
partitioned drives are fully supported. There is no arbitrary restriction in place for any maximum
value.
At the same time, the mere storage capacity of a drive doesn’t reveal anything about its actual
database. Even a comparatively small 100 GB drive can consist of millions of files. If these files are
heavily fragmented, performance will naturally suffer. But not every defragmentation tool is in a
position to help such a file system. O&O Defrag is, however, able to process very large volumes of
data and numbers of files while still placing few demands on memory. During development, we
worked very hard to guarantee outstanding optimization on even drives whose free disk space is
heavily fragmented.
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