[305] in Release_7.7_team

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sgi upgrading alternatives

daemon@ATHENA.MIT.EDU (Mike Barker)
Wed May 10 12:17:21 1995

From: Mike Barker <mbarker@MIT.EDU>
To: acmg@MIT.EDU, dcns-dev@MIT.EDU, release-team@MIT.EDU, skunks@MIT.EDU,
        ops@MIT.EDU, tjm@MIT.EDU, gjackson@MIT.EDU, nschmidt@MIT.EDU,
        carla@MIT.EDU, bmurphy@MIT.EDU, bwmelans@MIT.EDU, kim@MIT.EDU,
        vrt@MIT.EDU, cfields@MIT.EDU, dot@MIT.EDU, alexp@MIT.EDU
Date: Wed, 10 May 1995 12:16:38 EDT


As far as I can tell, these are the alternatives that are available.
Option 1 is not feasible, but I include it for completeness.

Option 1.  Don't upgrade XL machines; postpone installing XZ machines
	   Use IRIX 5.2/AFS 3.3a (do nothing-- UPSET EVERYONE)

Option 2.  Don't upgrade XL machines; install new XZ machines
	   Use IRIX 5.2/AFS 3.3a (no demos on XZ; 3PSW may not work)

Option 3.  Upgrade XL machines; install new XZ machines
	   Use IRIX 5.2/AFS 3.3a (no demos on XZ; 3PSW may not work)

Option 4.  Don't upgrade XL machines; install new XZ machines
	   Mix--IRIX 5.2/AFS 3.3a on XL; IRIX 5.3/AFS 3.4 on XZ
	   (support nightmare)

Option 5.  Upgrade XL machines; install new XZ machines
	   Use IRIX 5.3/AFS 3.4

All options will require some work on the install server.

Since there doesn't seem to be much gain in holding back on upgrading
XL machines, only options 3 and 5 are realistic.  Option 5 is optimal,
but depends on availability of AFS 3.4.

I think Option 3 is the most likely alternative.  It will require
testing to check that the key applications operate.

If anyone has any other alternatives, please let me know.

thanks.
mike

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