The award-winning online defragmenter for OpenVMS comes with several new Fonctionnalités:
INDEXKEEPER - a safe, fast method for defragmenting the index file on each disk.
Improved Fragmentation Analysis Utility - newly enhanced to report the percentage of disk fragmented and number of excess fragments.
Supports v5.4 to v7.3 of Open VMS on VAX, and v6.1 to v7.3 on Alpha. IMPORTANT -- this is a reminder: please ensure that you reinstall Diskeeper after upgrading VMS.
Alpha processors are capable of handling thousands of disk I/O's per second, so it doesn't take a genius to figure out that disks are causing traffic jams with their pokey little 44-100 I/O's per second.
For less than the cost of a new disk, your Alpha (or VAX) could be handling an average of 600-800 disk I/O's per second. How? With I/O Express 4.3, the BRAND NOUVEAU! , revolutionary data cacher from Executive Software: IO Express fully utilizes the Alpha 64-bit architechture, uses intelligent read-ahead caching, is completely safe and operates on VAX machines.
Have you ever wished that OpenVMS had something like Microsoft's File Manager? If so, File Master is for you! With File Master, your files are visually arranged in directory trees. Now, you can view the contents of files without opening them, search a directory (or entire disk) for a key word or phrase, and sort files in more ways than File Manager ever dreamed of!
Frag Guard reduces or eliminates file fragmentation when new files are created and when existing files are extended. It does not defragment files; instead it helps prevent them from being created or extended in a fragmented state in the first place.
When a file is created or extended in a fragmented state, additional system resources (I/O and CPU) are needed to store the fragmented data on the disk. Separate I/O operations are needed to store each fragment of the file onto the disk. Thus, a file stored in ten fragmented pieces uses more system resources to store than a file stored in one contiguous piece.
Reducing fragmentation speeds up file creation and extension, since fewer fragments equals fewer I/Os to store them.
La fragmentation de disque se produit lorsqu'un fichier est divisé en plusieurs morceaux pour pouvoir le faire tenir sur le disque.
Elle intervient naturellement à mesure que les fichiers sont enregistrés, supprimés et redimensionnés. Lorsqu'un fichier est disséminé sur l'ensemble d'un disque, il prend plus de temps à lire et à écrire.
Mais les effets de la fragmentation ne s'arrêtent pas là : ralentissement des performances et du démarrage, incidents et blocages inattendus, voire même impossibilité totale de démarrer le système.
Le système d'exploitation est bien souvent soupçonné d'être à l'origine de ces problèmes, alors que le vrai coupable n'est autre que la fragmentation de disque.
