Scalability: A Big Headache

by Dominik Weber

"Scalability is simply the ability of our forensic tools and processes to perform on larger data sets. We have all witnessed the power of Moore's law. Hard drives are getting bigger and bigger. A 2 TB SATA hard drive is to be had for much under $100. With massive storage space being the norm, operating systems, and software is leveraging this more and more. For instance, my installation of Windows 7 with Office is ~50GB. Browsers cache more data and many temporary files are being created. After Windows Vista introduced the TxF layer for NTFS, transactional file systems are now the norm, and the operating system keeps restore points, Volume Shadow Copies and previous versions. Furthermore, a lot of the old, deleted file data will not get overwritten anymore. This "wastefulness" is a boon to forensic investigators…"

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