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High-speed scanning / Benchmarks

High-speed scanning theory
High-speed scanners are optimized for Black & White (B&W) scanning.  Docs2Manage (D2M) supports B&W Tiff as an image mode in any edition and is the best choice for general document management.  Most other graphic modes are considerably slower and will degrade the performance of high-speed document scanners, mainly because other image modes in D2M create larger image sizes.  

To test D2M, several different Fujitsu high-speed scanners were used.  The fastest of the models tested was a Fujitsu M3097DG SCSI duplex scanner capable of 44 pages per minute (ppm) and 80 images per minute (ipm) in duplex mode.  D2M was configured to connect to an MS SQL Server database installed on a server with dual 1Ghz processors and 1024 MB of system memory.  The workstation doing the scanning in D2M was a single 1Ghz processor machine with 512MB memory.  Scanning was performed using the automatic document feeder (ADF) using 8 1/2 x 11" document in landscape mode at 200 dpi.

Scan results
In Simplex Mode, 43 ppm were scanned into a single D2M Document (into a repository).
In Duplex Mode, 38 ppm were scanned into a single D2M Document (into a repository).

The role of the repository with respect to high-speed scanning
The ability to scan many unrelated documents into a single record and later move them to new documents helps separate the functions of D2M users.  One user may scan documents non-stop while at another time or another user may move pages from the repository to categorized new document(s).   ..