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Shared disks were in VAXclusters in 1980s | 478 comments | Create New Account
Comments belong to whoever posts them. Please notify us of inappropriate comments.
Shared disks were in VAXclusters in 1980s
Authored by: RichardB on Friday, June 08 2012 @ 08:48 AM EDT
VAX clusters had shared disks from the beginning in 1983 (16 years before this dubious patent).
Yes, but if you read the patent, what they are patenting is adding caching to a VAX cluster, which historically lacked a distributed block cache.

However, it's only software, and whilst it's probably hard to implement, adding a cache is a fairly obvious idea.

[ Reply to This | Parent | # ]

Shared disks were available ever since SCSI
Authored by: jesse on Friday, June 08 2012 @ 12:12 PM EDT
As the SCSI standard did allow multiple control nodes.

I ran a shared SCSI between Linux and Windows (to access a SCSI 2 tape backup
device). The only problem that showed up was that Windows couldn't handle a
remote bus reset... Other than that, there were no problems actually sharing the
tape.

[ Reply to This | Parent | # ]

Shared disks were in VAXclusters in 1980s
Authored by: Anonymous on Friday, June 08 2012 @ 06:42 PM EDT
Novell NetWare (Called Sharenet at the time) used read and write caching in
1983. Of course, the disk was internal to a server, but was effectively shared
by all client computers.

[ Reply to This | Parent | # ]

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