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NAME    [Toc]    [Back]

     presto - Prestoserve battery-backed memory

SYNOPSIS    [Toc]    [Back]

     presto* at sbus? slot ? offset ?

DESCRIPTION    [Toc]    [Back]

     The Legato Prestoserve NVRAM cards used to be  part  of  the
     accelerator''  product,  which  used  the cards memory as an
     cache,  increasing  performance  of  NFS  servers  exporting
filesystem as NFS
     protocol, version 2.

     The  presto  driver  does  not attempt to achieve such a behaviour, which is
     questionable with the advent of NFS protocol, version 3.

     Instead, it will provide direct access to the  NVRAM,  as  a
block device.

FILES    [Toc]    [Back]

     /dev/prestoup       block  mode  Prestoserve  card number u,
partition p
     /dev/rprestoup     raw mode Prestoserve card number u,  partition p

SEE ALSO    [Toc]    [Back]

     intro(4), disklabel(5), MAKEDEV(8), disklabel(8)

BUGS    [Toc]    [Back]

     The  NVSIMM flavour, designed for SPARCstation models 10 and
20, is not
     supported yet.

OpenBSD     3.6                          April      13,      2003
[ Back ]
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