"Bryan J. Smith" schrieb:
> Simon Matter wrote:
> > Then I installed one Promise Ultra100TX2 IDE controller,
> > connecting 4 IBM 60GB drives.
> Ouch! Talk about a performance bottleneck (using ATA drives as
> "slaves"). And I don't want to even get started with the Promise
> cards and drivers themselves.
Forget it! It's not true, believe me. I made ALOT of test now and it
really doesn't matter.
> > My next steps before giving up:
> > - I have installed a second Prosime controller to make sure every IDE
> > disk has it's own channel. (Don't blame Promise, I had exactly the same
> > prob with the i820 IDE of the DELL Precision 220). Test is running right
> > now...
> Er, by this time, you could have spend a few buck more and gotten a
> 4-channel 3Ware Escalade 6000 or, better yet, 7000-series
> (~$200-225). Then you'd have _real_, independent,
> microcontroller-driven hardware RAID-5 from the system perspective.
> Then "device" would then look like a single, "dumb" drive. Plus the
> 3Ware driver has been in the stock kernel since 2.2.15.
We have lot of servers here with SoftRAID5 and SoftRAID1 on IDE and SCSI
and they are running for years now without ANY problem! And when it
comes to performance, nothing is faster than having a fast Athlon and a
fast operating system (linux) running as your raid controller! We have
all the big irons here from IBM, HP, Compaq, Siemens-Fujitsu, DELL with
all their super ultra caching raid and disk arrays but Linux SoftRAID5
is faster. Give it a try.
> > - Configuring the 4 IDE disks as RAID10 and test again. I will loose
> > 60GB, but at least we then know that SoftRAID5 with IDE with XFS with
> > ... with ... is DANGEROUS(tm).
> > - Try with ext2 on the RAID5 :-(
> I thought the whole 2.4 kernel and software RAID-5 was not
> recommended, no matter what fs you use?
> -- TheBS
> Bryan J. Smith mailto:b.j.smith@xxxxxxxx chat:thebs413
> SmithConcepts, Inc. http://www.SmithConcepts.com
> Linux 'Worms' exploit known security holes that were fixed
> 3-12 months earlier. NT/2000 'Worms' exploit unknown se-
> curity holes that won't be fixed for another 3-12 months.
Simon Matter Tel: +41 61 695 57 35
Fr.Sauter AG / CIT Fax: +41 61 695 53 30
Im Surinam 55
CH-4016 Basel [mailto:simon.matter@xxxxxxxxxxxxxxxx]