[dba-Tech] Win2k Server and RAID

Drew,
Thanks for that info. I have not done software RAID and had read that when
you select the mirror drives it will want format them. That doesn't make any
sense to me if the initial drive was already formatted but then I haven't
had the oportunity to try it either.

I have always been under the impression that SCSI drives were better suited
for intensive I/O operations. But those impressions may be a bit dusty given
the advances in IDE drives oand with Serial ATA. Do you have any advice on
IDE versus SCSI drives for RAID?

Also, what's your experience of differences in I/O performance and CPU
consumption when comparing software versus hardware RAID?

John

BTW its remarkable how little relevant information I got through googling
this subject. Did I just suck at googling today or what?
:o)


> -----Original Message-----
> From: dba-tech-bounces at databaseadvisors.com
> [mailto:dba-tech-bounces at databaseadvisors.com]On Behalf Of Drew Wutka
> Sent: Wednesday, February 11, 2004 8:07 PM
> To: Discussion of Hardware and Software issues
> Subject: RE: [dba-Tech] Win2k Server and RAID
>
>
> Not correct.  You can Mirror the OS 'volume' in Windows 2000 server, using
> the software RAID.  It just can't be part of a RAID 5 volume.
>
> Go into disk management, make the main drive, and your 'second' drive
> 'Dynamic Disks'.  It will require a reboot.  Once that is done,
> simply right
> click on your root partition, and tell it to Add Mirror.
>
> Piece of cake.
>
> As for your earlier question for performance issues, you won't really see
> any performance drop, but you will get performance gain on drive access.
> Mirrored will read twice as fast, striped will write twice as
> fast, and RAID
> 5 will read and write faster.
>
> Drew
>
> -----Original Message-----
> From: dba-tech-bounces at databaseadvisors.com
> [mailto:dba-tech-bounces at databaseadvisors.com]On Behalf Of John Bartow
> Sent: Wednesday, February 11, 2004 2:03 PM
> To: Discussion of Hardware and Software issues
> Subject: RE: [dba-Tech] Win2k Server and RAID
>
>
> William,
> My understanding is that when using software RAID 1 Windows OS
> can not be on
> a mirrored drive. When using hardware RAID 1 it can. is this correct?
>
> John
>
> > -----Original Message-----
> > From: dba-tech-bounces at databaseadvisors.com
> > [mailto:dba-tech-bounces at databaseadvisors.com]On Behalf Of William
> > Hindman
> > Sent: Wednesday, February 11, 2004 1:24 PM
> > To: Discussion of Hardware and Software issues
> > Subject: Re: [dba-Tech] Win2k Server and RAID
> >
> >
> >
> > ...it takes up cpu cycles ...but if your server is primarily a
> file server
> > rather than applications oriented, the added cycles won't be noticed.
> >
> > William Hindman
> > Government is not reason, government is not persuasion,
> > government is force. It is a dangerous servant." G. Washington
> >
> > ----- Original Message -----
> > From: "John Bartow" <john at winhaven.net>
> > To: "_DBA-Tech" <dba-tech at databaseadvisors.com>
> > Sent: Wednesday, February 11, 2004 12:25 PM
> > Subject: [dba-Tech] Win2k Server and RAID
> >
> >
> > > Does configuring RAID 1 with Win2k Server without a dedicated
> RAID card
> > have
> > > any major drawbacks?
> > >
> > > TIA
> > > John
> > >
> > >
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