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Communicator 3000 MPE/iX Release 6.5 (Non-Platform Software Release C.65.00): HP 3000 MPE/iX Computer Systems > Chapter 4 Data Center Management
TurboSTORE Support for DLT |
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by Uma Bondada DLT drives offers the following advantages:
The following Turbostore products support DLT without the fast search option:
The fast search concept is generally used when "restoring" files selectively from the tape. The MPE/iX environment variable HPFASTSEARCH should be set to TRUE for "fast search" to happen. Without fast search, files are skipped one at a time until the required file to be restored is reached. During fast search, a number equalled to the intervening tape marks or save set marks, between two consecutive files of the "restoreset", is calculated and skipped at one shot, to go to the next file to be restored. Fast search greatly improves the "restore" time. MPE/iX 5.5 onwards the fast search on DLT is supported with the installation of the following patches:
With respect to the different MPE/iX versions, the patches and their versions that need to be applied are given in the following table:
The MPE/iX command "FCOPY" cannot be used on the tape created using the store with this patch. To allow "fcopy", a new STORE option "FCOPY" is to be used while "storing". However this tape cannot support fast search while "restoring". So FCOPY and fast search are mutually exclusive. |
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