Gentoo Logo
Gentoo Spaceship




Note: Due to technical difficulties, the Archives are currently not up to date. GMANE provides an alternative service for most mailing lists.
c.f. bug 424647
List Archive: gentoo-sparc
Navigation:
Lists: gentoo-sparc: < Prev By Thread Next > < Prev By Date Next >
Headers:
To: gentoo-sparc@g.o
From: Derek Pizzagoni <pizz@...>
Subject: RAID-1 Question
Date: Fri, 26 Aug 2005 10:58:46 -0700
This is not necessarily sparc-specific, but I'm running Linux on my
Ultra10, so I figure it can't hurt...

If you run RAID-1, where one of the members of a mirror is running at
ATA-33, and the other member is running at UDMA-100, what type of
performance can you expect?

I know that when you write, you'll write to both, which means you still
have to write at UDMA-100 and ATA-33 speeds, but when you read, what
happens?  Is the driver smart enough to read from the faster drive?
Does it probe both, and whichever one responds first gets it?

Obviously, it would be best to run them both at the same (and highest)
speed, but you're limited in the number of drives that can fit inside
the case of the Ultra10.  I'm considering booting off of the internal
IDE, and running the rest of the system off drives connected to a
higher-speed PCI-IDE card.  The problem is, I haven't found an easy way
to put 3 hard disks inside (I just can't seem to get a drive to fit
above the floppy...), unless I get rid of the CDROM drive.

I've considered SCSI, but the drives are just too expensive, and the
higher-end IDE drives out these days are pretty fast.

Thanks in advance...
-- 
gentoo-sparc@g.o mailing list


Navigation:
Lists: gentoo-sparc: < Prev By Thread Next > < Prev By Date Next >
Previous by thread:
Two E420R's
Next by thread:
Anyone using sparc/sparc64/2005.1?
Previous by date:
Two E420R's
Next by date:
Anyone using sparc/sparc64/2005.1?


Updated Jun 17, 2009

Summary: Archive of the gentoo-sparc mailing list.

Donate to support our development efforts.

Copyright 2001-2013 Gentoo Foundation, Inc. Questions, Comments? Contact us.