Has anyone tried out the new ultra160 scsi?
Here is a link to an old artcle announcing
the standard, September 14, 1998.
http://www.pcworld.com/pcwtoday/article/0%2C1510%2C8078%2C00.html
It's supposed to be twice as fast as ultra2 scsi
Here is a link to the ultra160 web site:
http://www.ultra160-scsi.com/
scsi type Speed
--------- -----
ultra160 160Mb
ultra2 80Mb
wide 40mb
Since qmail is disk I/O bound I'm interested in hearing
or discussing the advantages of a ultra160 machine.
IBM is selling 7,200 and 10,000 ultra160 disks with
a seek time of 4.2 ms (or around that speed)
Here is a link to IBM ultra160 products
http://www.storage.ibm.com/hardsoft/diskdrdl/prod/ultrastar.htm
Here is a link to a FAQ about IBM ultra160 technology.
http://www.storage.ibm.com/hardsoft/diskdrdl/library/ultra3.htm
What I'm looking at, in terms of hardware for a large
volume machine is:
2 PIII 500Mhz cpu
2 Ultra160 9G disks
512 MB ram
The other hardware configuration I'm looking at for
medium or low volume sites is with an IDE flash drive.
They are alot cheaper than ram drives. Costs about
$500 (street price) for 400Mb
Burst transfer rate: About 20 Mb/s
Flash mem transfer rate: 8 Mb/s
Here's a link to a product site for IDE/ATA flash
disks. I haven't checked out thier prices.
http://www.magicram.com/IDE_flash.htm
So the configuration would be
1 PIII 500Mhz cpu
1 ATA 9G disk
1 400Mb IDE flash drive
128 MB ram
Any one want to discuss these or talk about optimial
hardware configurations for qmail servers?
Ken Jones
Inter7
