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Re: Why database is corrupted after re-booting

From: Alex Turner <armtuk(at)gmail(dot)com>
To: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
Cc: Andrus <eetasoft(at)online(dot)ee>, pgsql-general(at)postgresql(dot)org
Subject: Re: Why database is corrupted after re-booting
Date: 2005-10-28 14:03:45
Message-ID: 33c6269f0510280703w178c3829s2b176811da541540@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-general
I have read it before - it's a _fantastic_ resource, and I will
probably make every junior tech I ever hire read it too.

On 10/28/05, Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> wrote:
> Alex Turner wrote:
> > Of course not counting the Western Digital Raptor SATA drive, which
> > are priced more like SCSI drives also, and have many of the features
> > of a SCSI drive including NCQ
> >
>
> Well, the PDF talks about several aspects of server drives, including
> concurrency, performance, and reliability.  Not cutting corners to save
> money in these areas are features for server drives.
>
> ---------------------------------------------------------------------------
>
>
> > Alex
> >
> > On 10/28/05, Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> wrote:
> > > Andrus wrote:
> > > > >> QUANTUM FIREPALLP LM20.5 is a widely used ATA IDE drive.
> > > > >>
> > > > >> Where do find information does it implement write caching properly or not
> > > > >> ?
> > > > >
> > > > > I don't think the manufacturers bother to make this sort of information
> > > > > available.
> > > > >
> > > > >> Is there IDE drive compatibility list for Postgres ?
> > > > >
> > > > > No - for the reason above (amongst oghers).
> > > >
> > > > Richard, thank you.
> > > > Classification of IDE drives into good and bad ones requires knowing *at
> > > > least one* good and bad model.
> > > >
> > > > Can you write one good and bad IDE drive models, please?
> > > >
> > > > Knowing those models before buying is huge step forward for perventing
> > > > database corruption in desktop computers.
> > >
> > > The bottom line is that IDE are desktop drives, not designed for high
> > > concurrency.  Read this for details:
> > >
> > >         http://www.seagate.com/content/docs/pdf/whitepaper/D2c_More_than_Interface_ATA_vs_SCSI_042003.pdf
> > >
> > > --
> > >   Bruce Momjian                        |  http://candle.pha.pa.us
> > >   pgman(at)candle(dot)pha(dot)pa(dot)us               |  (610) 359-1001
> > >   +  If your life is a hard drive,     |  13 Roberts Road
> > >   +  Christ can be your backup.        |  Newtown Square, Pennsylvania 19073
> > >
> > > ---------------------------(end of broadcast)---------------------------
> > > TIP 6: explain analyze is your friend
> > >
> >
>
> --
>   Bruce Momjian                        |  http://candle.pha.pa.us
>   pgman(at)candle(dot)pha(dot)pa(dot)us               |  (610) 359-1001
>   +  If your life is a hard drive,     |  13 Roberts Road
>   +  Christ can be your backup.        |  Newtown Square, Pennsylvania 19073
>

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