Hardware vs Software Raid in RH 7.x

[Steven Hildreth]

Right, again I just thought it was interesting, but its nice that you are
paying attention to the differences in RAID configurations.

Regards,
Steven

----- Original Message -----
From: "Brian Densmore" <DensmoreB at ctbsonline.com>
To: <kclug at kclug.org>
Sent: Monday, March 11, 2002 8:18 AM
Subject: RE: Hardware vs Software Raid in RH 7.x

> This is interesting, but it is apples and oranges. One is only RAID 0
> and the other is RAID 0/1.
> Two -=very=- different mechanisms. I would expect RAID 0/1 to be slower,
> since it is doing more work.
>
> JM2C,
> Brian
>
> > -----Original Message-----
> > From: Steven Hildreth [mailto:s_p_hildreth at yahoo.com]
> > Sent: Sunday, March 10, 2002 5:18 PM
> > To: jilindi at yahoo.com; kclug at kclug.org
> > Subject: Re: Hardware vs Software Raid in RH 7.x
> >
> >
> > I would like to offer some info about the latest server I
> > just finished
> > (Friday Night) building for work.
> >
> > It has two RAID arrays being used, one is a software array
> > using Six Quantum
> > 6 gb UW (20 Mb Transfer rate) SCSI drives and I have them in a single
> > striped RAID 0, to be used for backup purposes. The second
> > RAID is a RAID
> > 0/1 using 4 60 gb IDE Maxtor ATA100 Drives and the onboard
> > Highpoint HP370A
> > controller (which gives me a 104 usable ext3 formatted partition).
> >
> > I have one of the array's mounted at /storage and the other
> > as /hpt (guess
> > you can figure out which is which :)
> >
> > This server is a SAMBA server, and the only benchmark testing
> > I have done is
> > from a Windows XP LAN workstation. Transferring a 540 Mb ISO
> > File onto one
> > of the shares (stored on the /storage point) and to another
> > share (on the
> > /hpt point) the time differences where 58  seconds for the
> > /storage and 51
> > for the /hpt.
> >
> > Not really answering your questions, just thought someone
> > might find it
> > interesting.
> >
> > Regards,
> > Steven
> >
> > ----- Original Message -----
> > From: "John Lindinger" <jilindi at yahoo.com>
> > To: <kclug at kclug.org>
> > Sent: Sunday, March 10, 2002 11:31 AM
> > Subject: Hardware vs Software Raid in RH 7.x
> >
> >
> > > Hello:
> > >
> > > Anybody out there using the Mylex AcceleRAID  150, 200, or
> > 250 in RedHat
> > 7.x ?
> > >
> > > I am setting up my SGI 1400 server with RedHat 7.0 or 7.1.
> > The system has
> > the Intel
> > > SC450NX main board with the Symbios onboard SCSI
> > controllers. The onboard
> > SCSI
> > > controllers are upgradable to Hardware RAID by installing
> > an AcceleRAID
> > card in PCI slot
> > > B3
> > >
> > > I want to implement RAID Level 1 (mirror) for the /boot and
> > / partitions
> > and RAID level 5
> > > for the balance of my partitions.
> > >
> > > If I use software RAID as described in the RedHat
> > documents, it all seems
> > easy enough.
> > >
> > > If I spend $50 to $100 for the Mylex AcceleRAID 150, 200,
> > or 250, then I
> > can use hardware
> > > RAID.  The RedHat hardware compatibility list refers me to...
> > >
> > >      http://www.dandelion.com/Linux/DAC960.html
> > >
> > > ...for the Linux drivers.
> > >
> > > The dandelion docs say that the I must recompile the
> > kernel, and if I want
> > to boot from a
> > > raid partition I must patch LILO & FDSIK. But it also says,
> > >
> > >   "Red Hat Linux 6.0 and SuSE Linux 6.1 include support
> > >   for Mylex PCI RAID controllers. Installing directly
> > >   onto a DAC960 may be problematic from other Linux
> > >   distributions until their installation utilities are
> > >   updated. "
> > >
> > > Can anybody tell me from experience what I must do to use
> > the hardware
> > raid on RH 7. Is
> > > all this recomiling and patching not needed for RedHat 7.X ???
> > >
> > > Thanks,
> > > John Lindinger
> > > Nebraska City, NE
> > >
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>
>

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