Re: hot(un)plugging IDE disks

Thomas Davis (tadavis@lbl.gov)
Mon, 15 Nov 1999 10:46:44 -0800

Mark Lord wrote:
>
> Francois-Rene Rideau wrote:
> ..
> > Hum. I never had any problem with my old (external) SCSI2 drive on an SC200,
> > but obviously YMMV. How do you determine that bays at hotswappable?
>
> Easy. There are NO hotswappable IDE bays.
>

actually, there is.

http://www.raidzone.com

BUT, it's all specialized hardware (including the IDE controller).

and it doesn't do too bad either..

[root@pdsflx00 bonnie]# ./bonnie -s 1024 -d /export/work/
File '/export/work//Bonnie.709', size: 1073741824
Writing with putc()...done
Rewriting...done
Writing intelligently...done
Reading with getc()...done
Reading intelligently...done
Seeker 1...Seeker 2...Seeker 3...start 'em...done...done...done...
-------Sequential Output-------- ---Sequential Input--
--Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block---
--Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU
/sec %CPU
1024 12387 64.0 17140 15.2 11418 26.4 21036 88.7 63542 67.5
319.8 4.9

[ 15 way RAID5, 36gb, IBM UltraDMA drives ]

-- 
------------------------+--------------------------------------------------
Thomas Davis		| PDSF Project Leader
tadavis@lbl.gov		| 
(510) 486-4524		| "Only a petabyte of data this year?"


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