Sorry. This statement is incorrect.
If you aren't using ZFS, or even a GEOM volume with mirror/RAID5/softup/etc,
you cannot make the statement that hardware RAID is faster. I learned that 3
It takes about 30 minutes to mirror 1.5TB on ZFS. Try that on hardware RAID.
I did the same with 80 GB SATA drives a couple of years ago. Gmirror killed
hardware mirror by 50%
When your processor on your hardware RAID card is junk and you have a kickass
processor and good chunk of memory on your main system and decent controller
that isn't getting maxed, the "hardware RAID is always faster" paradigm walked
out the door a few years ago.
This does not go for EMC, IBM, Hitachi high-end storage arrays where you write
to TBs of RAM Cache.
From: Wojciech Puchar <woj...@wojtek.tensor.gdynia.pl>
To: Gary Gatten <ggat...@waddell.com>
Cc: firstname.lastname@example.org; Benjamin Krueger
<benja...@seattlefenix.net>; Olivier Mueller <om-lists-...@omx.ch>;
freebsd-performa...@freebsd.org; Bill Moran <wmo...@potentialtech.com>
Sent: Wednesday, May 6, 2009 2:31:16 PM
Subject: RE: filesystem: 12h to delete 32GB of data
> It could just be me, but I swear Hardware RAID has been faster for many
> many years, especially with RAID5 arrays - or anything that requires
maybe with RAID5, but using RAID5 today (huge disk sizes, little sense to save
on disk space) instead of RAID1/10 doesn't make much sense, as RAID5 is slow on
writes by design
freebsd-performa...@freebsd.org mailing list
To unsubscribe, send any mail to "freebsd-performance-unsubscr...@freebsd.org"
email@example.com mailing list
To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"