Yes, unless as in my case the server crashes - then you need the great NT
boot floppy - In some ways setting the boot.ini is straight forward - If you
have never build and tested one - I would greatly recommend it - I
discovered the hard way that Compaq servers prefer that the mirrored
partition be the first partition on the mirrored disk - I could never get it
to boot if the mirrored partition was the 2nd.

Ron James
Network Management Specialist
Premiere Conferencing

                -----Original Message-----
                From:   Kenneth Sparks [mailto:ken_x_sparks AT AMOCO DOT COM]
                Sent:   Wednesday, April 21, 1999 4:35 PM
                To:     ADSM-L AT VM.MARIST DOT EDU
                Subject:        Re: DB mirroring vs. RAID

                     Shouldn't the mirror allow you to continue without
interruption?  Ours
                     do.  You just replace the failed drive and resync the
filesystem.


                ______________________________ Reply Separator
_________________________________
                Subject: Re: DB mirroring vs. RAID
                Author:  MRemeta (MRemeta AT SELIGMANDATA DOT COM) at unix,mime
                Date:    4/21/99 2:08 PM


                So if it was on a RAID 5 set and you had lost one disk, your
database would
                have still been intact and you would have had 0 hours of
down time (assuming
                the RAID 5 worked the way it was suppose to).
                Sounds like a pretty good case for RAID 5 instead of
mirroring.



                > -----Original Message-----
                > From: James, Ron [SMTP:Rjames AT ATSGROUP DOT COM]
                > Sent: Wednesday, April 21, 1999 1:09 PM
                > To:   ADSM-L AT VM.MARIST DOT EDU
                > Subject:      Re: DB mirroring vs. RAID
                >
                > I stand caught - No, Mine is not a Raid set - I had a
limited number of
                > drives that I could install so I maximized the total drive
space for pools
                > and db logs - Certainly if space permits - go for it - I
wasn't willing to
                > lose 1/n of my drive space for Raid 5. I migrate to tape
and a copy pool
                > immediately after completing my backups. It's a personal
comfort issue -
                > I'm
                > comfortable with the setup that I have - you may want the
additional fault
                > tolerance.
                >
                > Ron
                >
                >                 -----Original Message-----
                >                 From:   Remeta, Mark
[mailto:MRemeta AT SELIGMANDATA DOT COM]
                >                 Sent:   Wednesday, April 21, 1999 8:35 AM
                >                 To:     ADSM-L AT VM.MARIST DOT EDU
                >                 Subject:        Re: DB mirroring vs. RAID
                >
                >                 Yes but you did not answer Reinhard's
question. Was the
                > 'primary disk' a
                >                 RAID 5 set?
                >
                >
                >                 > -----Original Message-----
                >                 > From: James, Ron
[SMTP:Rjames AT ATSGROUP DOT COM]
                >                 > Sent: Wednesday, April 21, 1999 10:00 AM
                >                 > To:   ADSM-L AT VM.MARIST DOT EDU
                >                 > Subject:      Re: DB mirroring vs. RAID
                >                 >
                >                 > Mirroring saved my butt once - I lost
the primary disk -
                > I
                > replaced the
                >                 > disk
                >                 > and with the help of Kelly Lipp at SSSI
we restored the
                > server from the
                >                 > mirrored volume - and was well in under
a few hours.
                >                 >
                >                 > Ron James
                >                 > Network Management Specialist
                >                 > Premiere Conferencing
                >                 >
                >                 >                 -----Original
Message-----
                >                 >                 From:   Reinhard Mersch
                > [mailto:mersch AT UNI-MUENSTER DOT DE]
                >                 >                 Sent:   Wednesday, April
21, 1999 5:44
                > AM
                >                 >                 To:
ADSM-L AT VM.MARIST DOT EDU
                >                 >                 Subject:        DB
mirroring vs. RAID
                >                 >
                >                 >                 Hi,
                >                 >
                >                 >                 again I am struggling
with my ever
                > growing
                > ADSM DB, not
                >                 > knowing where to
                >                 >                 get the additional disk
space I need. An
                > option would be,
                >                 > to
                >                 > give up DB
                >                 >                 mirroring and rely on
RAID5 instead.
                >                 >
                >                 >                 Since RAID5 protects
against
                > media/hardware failures, are
                >                 > there other
                >                 >                 threats, DB mirroring
protects against
                > and
                > RAID5 does not?
                >                 > There has been
                >                 >                 discussion on this in
August 98 and Andy
                > Raibeck mentioned
                >                 > partial page
                >                 >                 writes. But how probable
are they? Has
                > anybody out there
                >                 > ever been in a
                >                 >                 situation where DB
mirroring (would
                > have)
                > helped and RAID5
                >                 > (would have)
                >                 >                 not?
                >                 >
                >                 >                 Regards
                >                 >
                >                 >                 --
                >                 >                 Reinhard Mersch
                > Westfaelische
                >                 > Wilhelms-Universitaet
                >                 >                 Zentrum fuer
Informationsverarbeitung -
                > ehemals
                >                 > Universitaetsrechenzentrum
                >                 >                 Roentgenstrasse 9-13,
D-48149 Muenster,
                > Germany      Tel:
                >                 > +49(251)83-31583
                >                 >                 E-Mail:
mersch AT uni-muenster DOT de
                > Fax:
                >                 > +49(251)83-31653