Re: Looking for a cheap upgrade (RAID)

On Mon, 2003-05-05 at 11:31, scott.marlowe wrote:
> On 3 May 2003, Ron Johnson wrote:
>
> > On Fri, 2003-05-02 at 13:53, Chad Thompson wrote:
> > > I have a server on a standard pc right now.
> > > PIII 700, 1Gig ram (SD), 40 Gig IDE, RedHat 8.0, PostgreSQL 7.3.1
> > >
> > > The database has 3 tables that just broke 10 million tuples (yeah, i think
> > > im entering in to the world of real databases ;-)
> > > Its primarly bulk (copy) inserts and queries, rarely an update.
> > >
> > > I am looking at moving this to a P4 2.4G, 2 Gig Ram(DDR), RedHat 8,
> > > PostgreSQL 7.3.latest
> > [snip]
> >
> > How big do you expect the database to get?
> >
> > If I may be a contrarian, if under 70GB, then why not just get a 72GB
> > 10K RPM SCSI drive ($160) and a SCSI 160 card?  OS, swap, input files,
> > etc, can go on a 7200RPM IDE drive.
> >
> > Much fewer moving parts than RAID, so more reliable...
>
> Sorry, everything else is true, but RAID is far more reliable, even if
> disk failure is more likely.  Since a RAID array (1 or 5) can run with one
> dead disk, and supports auto-rebuild from hot spares, there's really no
> way a single disk can be more reliable.  It may have fewer failures, but
> that's not the same thing.

What controller do you use for IDE hot-swapping and auto-rebuild?
3Ware?

--
+-----------------------------------------------------------+
| Ron Johnson, Jr.     Home: ron.l.johnson@cox.net          |
| Jefferson, LA  USA   http://members.cox.net/ron.l.johnson |
|                                                           |
| An ad currently being run by the NEA (the US's biggest    |
| public school TEACHERS UNION) asks a teenager if he can   |
| find sodium and *chloride* in the periodic table of the   |
| elements.                                                 |
| And they wonder why people think public schools suck...   |
+-----------------------------------------------------------+