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