About Amdahl's UTS

[Hal Perkins]

>>	Uhh, last time I looked, IBM's "370 compatible mainframes" were
>>	air cooled. This include all of the 43XX series.
>
>IBM's 1x5 and 1x8 series of machines were the last to be exclusively
>air cooled.  all 30xx series machines are primarily water cooled with
>the 3083 having the option of air or water cooling.  the 43xx series
>are air cooled.  i ought to know, i've been a systems programmer on all
>these machines (except the 1x5 series) and have had to poke at the
>innards occasionally.  and i've also poked inside amdahl v6 and v8's too.

The 4300s are air cooled, but most of the large 370s and 30XX machines
are water cooled.  For instance, Cornell had a 370/168 that sprang a
pinhole leak in the cooling system several years ago.  The machine was
down for days as IBM had to replace many circuit boards and a part of
the backplane, as well as fix the cooling radiators.


Hal Perkins                         UUCP: {decvax|vax135|...}!cornell!hal
Cornell Computer Science            ARPA: hal at cornell  BITNET: hal at crnlcs