Hardware vs Software Raid in RH 7.x

[Steven Hildreth]

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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