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Frequently Asked Questions about Sun NVRAM/hostid

By ServerWatch Staff (Send Email)
Posted Jan 13, 2001


Every Sun 3/80, sun4c, sun4u, and sun4m architecture machine contains an NVRAM chip (not to be confused with the NVRAM in Prestoserve). This NVRAM chip stores various configuration parameters (e.g. boot device, amount of RAM to test), maintains the clock, and also contains the IDPROM data, which is composed of the ethernet address, date of manufacture, hostid, a version number, and a checksum. Every Sun 3/80, sun4c, sun4u, and sun4m architecture machine contains an NVRAM chip (not to be confused with the NVRAM in Prestoserve). This NVRAM chip stores various configuration parameters (e.g. boot device, amount of RAM to test), maintains the clock, and also contains the IDPROM data, which is composed of the ethernet address, date of manufacture, hostid, a version number, and a checksum.

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