Re: Power outage problem
- From: "R. McCarty" <PcEngWork-NoSpam_@xxxxxxxxxxxxxx>
- Date: Tue, 16 Jan 2007 19:26:17 -0500
But a UPS is recommending where a system utilizes Write caching.
Not as a hardware protection, but to allow data to be flushed to the
drive. Abrupt power loss in that situation can result in data loss.
During an average month of use, I'll typically loose power at least a
couple of times, sometimes just a momentary brown out. I'm still
using a 7-year old PowerWare UPS that's only on it's 2nd battery.
One of the best investments I ever made in computer hardware. In
fact when my son was in college he was the only one in his dorm
with a UPS. Told me that many times it saved his work in process.
"w_tom" <w_tom1@xxxxxxx> wrote in message
news:1168992719.032780.15730@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Kvin wrote:
Just noticed, when i turn power on again (after Power outage), it seems
there where no shown standard disk error checking operation that windows
do
when was improperly shutdown. Does this means something?
Windows can determine problems from NTFS filesystem. Unexpected
shutdown (should) cause no data corruption. Meanwhile unexpected power
downs (from disk drive perspective) is quite normal. Shutdown simply
saves and updates all files to drive before power is removed. Drive
has no idea that power will be lost until power is suddenly removed (as
they worked even 30 years ago). Unexpected power loss does not harm
disk drive hardware since normal power down does same thing. NTFS
makes filesystem resilient if some files are not properly saved. (Old
FAT filesystem in Windows 9x/ME did not.) In short, the UPS
recommendation to protect hard drive hardware is a classic myth.
.
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