Reason being that NTFS is a journalled file system. Not sure on
NT 3.51's version of NTFS, but if you say so, probably true. (not meant to
be sarcastic, but sincere)
As for the SQL database, depending if it had good rollback
mechanisms to avoid corruption, it may or may not get corrupted, as you said.
As for the unix systems, most of them use UFS, which is not a
journalled file system. However, I do not know of many OSes or
distributions that let you add in a journalled fs. One that comes to mind
is linux with the reiserfs. (linux comes stock with ext2fs). (you can add
in journalled file systems afterwards, one commercial unix in mind that
comes stock and barrel with a journalled fs is the venerable Irix with it's
XFS). Go ahead, pull the plug on him, he won't care. No fsck on
startup. Just smooth rolling.
If you note the pattern here, it is a function of the file system
(or in the database's case, how it retains data and does integrity checks
and if it has rollback recovery to avoid data loss or undo bad transactions).
Not sure if I can give a definitive reason on why the cisco's do
not fear such things. Probably because it is not usually writing data very
often, and the data it writes is essentially a text file (NVRAM
configurations). The "OS" in itself is a static flash file that never
needs to be overwritten during normal runtime operation, only during
upgrades. This is totally different on a fully blown OS that has crazy
writes usually going on during operation. Or even if it did not, has a
good reason to double check for file integrity. The Cisco router was meant
to be more of an appliance like machine, so it's behavior makes sense, and
so does it's obvious resistance to the occasional power plug pull.
At 06:42 PM 1/21/02 -0500, Mark Odette II wrote:
>Hmmmm.....
>Funny, last I checked, you could turn off in Mid-Boot process, Pull the plug
>in Mid-Shutdown process, or yank the power to the UPS (and no battery left)
>with all NT Machines running (NT3.51 - W2K), and the system would never miss
>a beat in start-up file system recovery.
>
>Now do that to NT servers with Oracle or some SQL-type application server
>running on it, and it may have data corruption- but that's only with the
>DB's ... and that happens, no matter WHAT the platform.
>
>Now, then again, try doing the above such listed tasks of brutality to a Sun
>Box, an SCO box, or an AT&T Unix box, and watch the games begin as "Inodes"
>fly everywhere and the file system checker starts griping about how unhappy
>it is.... and I wouldn't be surprised if an AIX or SGI box did the same.
>DB Server or not.
>
>Sorry... just gotta love those MickeySoft stabs that have no meaning other
>than for slander.
>
>-----Original Message-----
>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
>Sent: Monday, January 21, 2002 12:42 PM
>To: [EMAIL PROTECTED]
>Subject: RE: Stupid Question [7:32591]
>
>Just turn them off or simply unplug them.
>
>Fortunately the IOS was not written by Microsoft and nothing will get
>corrupted!!!
>
>-Serge.
>
>Richard Tufaro wrote:
> >
> > What is the proper way to shutdown a router? not reload, but
> > shutdown? Just flick the switch? Seems to brutal to me.
> >
> > Richard Tufaro - MCSE - GSEC- CCNA
> > Network Engineer - Anda Inc.
> > [EMAIL PROTECTED]
> > MSN IM - [EMAIL PROTECTED]
-Carroll Kong
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=32771&t=32591
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