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Re: Mark IV data download broken
- To: TASS <tass@listserv.wwa.com>
- Subject: Re: Mark IV data download broken
- From: Chris Albertson <chrisalbertson90278@yahoo.com>
- Date: Mon, 31 Jan 2005 09:23:39 -0800 (PST)
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Have you looked into Linux software RAID? I tested a software
mirrored system a couple years ago by pulling the power cable
off of a disk while the system was up and serving data. Users
did not even notice that a drive had failed.
This used to be an exotic feature but now with $100 drives the
feature only costs $100. Worth the effort if you have loads
of data.
An extra bonus is that until one drive does fail
your system is ctually faster because reads can be done in
parallel across the mirored drives. The I/O rate for
reads is almost doubled. All for the price of one disk drive.
--- Doug Welch <welch@physics.mcmaster.ca> wrote:
>
> Hi Fraser,
>
> Thanks for the suggestion to add to the conf file.
>
> The disk carrying that data died last week. It will be replaced this
> week and everything is backed up, so no worries.
>
> Cheers,
> Doug
>
> On Sun, 2005-01-30 at 23:08, Fraser Farrell wrote:
> > The "entire Mark IV datasets" link on the TASS page now produces a
> 403
> > Forbidden error:
> >
> > http://crocus.physics.mcmaster.ca/TASSData/
> >
> > Probably just a file permissions problem; it was working fine
> earlier
> > this month.
> >
> > The error page also reveals an unhealthy amount of info about the
> > webserver to any hackers. This can be fixed by adding the following
>
> > two lines to Apache's httpd.conf:
> >
> > ServerSignature Off
> > ServerTokens ProductOnly
> >
> >
> >
> > cheers,
> --
> ==================================================================
> Douglas L Welch | Res office/voicemail (905) 525-9140 x23186
> Physics & Astronomy | FAX (905) 546-1252
> McMaster University |
> Hamilton, Ontario |
> Canada L8S 4M1 | E-mail welch@physics.mcmaster.ca
> ==================================================================
>
>
>
=====
Chris Albertson
Home: 310-376-1029 chrisalbertson90278@yahoo.com
Cell: 310-990-7550
Office: 310-336-5189 Christopher.J.Albertson@aero.org
KG6OMK
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