HP StoreEver Ultrium Tape Drives - Manual (Page 59)

• Ultrium 400 GB R/W cartridges with Ultrium 448 tape drives
• Ultrium 200 GB R/W cartridges with Ultrium 232 tape drives
• Data and file types
The type of data being backed up or restored can affect performance. Typically, small files incur
greater overhead in processing and access than large files. Equally, data that is not compressible
will always limit the speed at which the drive can write/read data. You will achieve no more
than native rates with uncompressible data.
Examples of files that compress well are plain text files, spreadsheets; those that compress poorly
are those that are either compressed as part of their format (such as, JPEG photographic files) or
stored as compressed (such as, .ZIP files or .gz/.Z files on UNIX platforms).
Ultrium Half-Height SCSI Tape Drives 59