> From: fedora-list-bounces@xxxxxxxxxx > [mailto:fedora-list-bounces@xxxxxxxxxx] On Behalf Of Rodolfo J. Paiz > Sent: Wednesday, July 07, 2004 10:24 AM > To: For users of Fedora Core releases > Subject: Re: Hardware RAID 1 - which card ? > > > At 12:13 PM 7/5/2004, Hannes Mayer wrote: > >I want a hardware RAID 1 not for speed nor will it be deployed in a > >high performance server, but I want good protection of my > data against > >harddisk failure and not having to reinstall the system in case of a > >failure is nice too. > > Do keep in mind that mistakes, user errors, power losses, and > other causes > of *data* corruption are far more common than outright hardware disk > failure. If you don't have one already, *first* make a good > backup system, > *then* do RAID-1. > > >I don't like software RAID - I've a much better feeling when > the card > >itself handles the mirroring. > > You'll find that software RAID-1 on Linux is very mature and > well-tested > and works well. If you still want a hardware RAID card, then > go right ahead > and get one... I've not used 3Ware with the 2.6 kernel yet > but it's been so > well supported in years past I'd have no real hesitation in > buying their > stuff again. > > Cheers, > > > -- > Rodolfo J. Paiz > rpaiz@xxxxxxxxxxxxxx > http://www.simpaticus.com > > We have installed a 3ware 7006-2 dual channel parallel IDE card in a 1U system running HARDWARE RAID 1 on an AMD XP3000+ based system with 1GB of memory and using a ASUS A7N8X-VM/400 motherboard. This system was built for a customer to use as a web server / mail server / mysql+php engine and FC2 plus the updates including the 2.6.6 kernel were installed. The driver used was the one that came with the kernel. A newer version is available from the 3ware site and may provide slightly better performance. A single disk tested with hdparm -Tt /dev/hda gave a performance of ~42 MB /sec The mirrored disk was tested with hdparm -Tt /dev/sda on the 3ware 7006-2 gave a performance number of ~57 MB / sec running zcav -u root /dev/sda to read the whole disk array in 100 MB chunks gave a performance of ~ 57 MB / sec at the beginning of the disk and ~ 45 MB / sec at the end of the array. The disks used were Maxtor 80 GB Hard Disks, PN 6Y080P0, ATA-133, 7200 RPM, 8MB Cache. Hardware RAID 1 with the right controller can provide outstanding performance. Your milage may vary.... but we have not seen any onboard controllers that can match this with such low CPU utilization. Best, ;-) Seth Bardash Integrated Solutions and Systems 1510 North Gate Road Colorado Springs, CO 80921 http://www.integratedsolutions.org Phone: 719-495-5866 Fax: 719-495-5870 Supplier of AMD, Intel and SPARC Servers and Systems running Windows, Linux, Solaris and VxWorks. --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.716 / Virus Database: 472 - Release Date: 7/5/2004
