[futurebasic] Re: [FB] Re: OS X file permissions

Message: < previous - next > : Reply : Subscribe : Cleanse
Home   : March 2004 : Group Archive : Group : All Groups

From: michael evans <michael.evans@...>
Date: Tue, 23 Mar 2004 11:04:20 -0500
> on 3/23/04 4:43 AM, Ken Shmidheiser at kshmidheiser@... wrote:

>> 3.) A file structure that's sensitive to unplanned power outages
>> and is a bear to repair. (Ever struggle with a crosslinked
>> file on OS X? I hope you never have to.)

I personally own 4 (elderly) desktop macs, 3 powerbooks (my daughters use
two g-3 powerbooks; I have a g-4 titanium) and 1 NT-Server 4.0 machine.

The desktop macs and the NT-Server windows machine were acquired in 1998 to

Anyhow, after experiencing a mysterious series of unpleasant crashes,
mysterious hd problems and blown power supples, a technical friend of mine
suggested installing Uninterruptible Power Supplies (UPS's). The NT
shutdowns caused by power failures caused a series of particularly gruesome
technical difficulties...

Since the UPS installations (I own UPS's, two big ones that handle 2 desktop
machines each and a small one that keeps the router, cable modem and 8-port
switch running for at least 60 minutes), the incidences of mystery problems
dropped to near zero. The big UPS's trigger automated automatic shutdowns in
the desktop machines for an extended power outage.

Viewing the incoming ac voltage over time log provided by the UPS software
was a real eye-opener. Maybe it's just Georgia Power and the wonderful
thunder storms we get or maybe it's just sheer coincidence, but I suspect
variable voltages, especially long-lasting brownouts, cause a lot of
'mystery' problems with desktop machines.

IMHO a UPS is better than a surge protector because, with a UPS, incoming ac
is converted to dc and fed into a battery. The ac supplied to the computer
is rectified dc coming from the battery. Thus the UPS is totally segregated
from the incoming ac out of the wall.

The long and the short of it is that I would NOT buy a desktop machine with
out having a provision for a UPS. My time is limited and valuable. I would
rather spend my time writing software rather than recovering from mysterious
hardware problems...


Michael Evans