20 Mar
2002
20 Mar
'02
11:49 p.m.
From: Eric Smith <eric(a)brouhaha.com>
Not counting an eight-hour power failure, one of my
PC-based servers
has had under two minutes of unscheduled downtime in seven years of
24x7 operation. That's better than 99.9999%.
Of course, it's not running Windows.
I have winder boxen that do that as servers. As desktops forget it, Word
dies and takes the OS at times. Never seen that on VMS.
I don't know what systems those were, but my first
486 PCI system
routinely got sustained PCI throughput of over 15 MB/second, between
disk, ethernet, and display.
and the processor was doing something useful?
Even many ISA bus systems could sustain over 4
MB/second.
Yes, it could. Shame the CPU was idle or doing just the block move.
I've seen Qbus systems (PDP-11) sustain levels like that but, the
CPU was useful.
PCs, and their busses didn't allow for concurrentcy of operations
especially ISA.
Allison