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VMS was a rock-solid OS developed by DEC (Digital Equipment Corp) to run on its VAX and MicroVAX enterprise-level platforms. Its bundled backup program, BACKUP, produced savesets with the .BCK file extension to rolex uk disk or tape.
DEC was purchased by Compaq, who were in turn bought by HP (Hewlett Packard). VMS evolved into fake rolex OpenVMS, and was ported to the ALPHA platform, but throughout retained the same BACKUP utility.
We admire VMS BACKUP. Its multiple CRC fields and user-determined XOR block allocation allow restoration of all file and meta-data even when a tape block is unrecoverable via a drive's hardware ECC recovery mechanisms.
Yes, in computing terms it's ancient... but we think it's light-years ahead of anything currently produced.
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