HP Data Protector Software Performance White Paper

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Figure 42 demonstrates the different runtimes if the EIDB is updated or not. The Windows NTFS
file system was initially loaded with 1 million small files.
Figure 42. Dependencies of Change Log Provider and Enhanced Incremental Database (EIDB)
Asynchronous reading
This option was introduced with Data Protector 6.1 and enables faster reading for data that is
striped across multiple physical disks. It applies to disk arrays if their logical drives are
configured in striped mode.
Note: Asynchronous reading was not designed for reading data from the same physical disk.