Summary: Raid5 question

From: Ying He (
Date: Fri Apr 30 1999 - 07:34:06 CDT

Dear Sun managers;

I have received a lot of responses and they are really helpful. Thanks for all
people who responsed as follow and some one I may missed:
Brooke King
Rajeev Kumar <>
David Evans <>
"Hsu, Dale" <>
Jon E. Kump <>
Michael Wang <>
Matthew Atkinson <>
"Evans, Dennis L" <>

Here is what I had before, the problem( actually it is not problem, it is
way raid5 works in my case) is when you used GUI interface, choose 4 disks and
use entire disk striping, the disk will assinged as this:

 Disk1 Disk2 Disk3 Disk4

 R5 Stripe R5 Stripe R5 Stripe R5 Log

It took one disk as log and one used for parity, that is why I got around 17 GB.


I created raid5 first without log, used 4 disks, then created subdisk with
1080kb, add it as log, now I got 3/4 of disk spaces which is what I

Thanks again for all wonderful suggestions, I really appreciate especially some
of people responses me a couple of time.


        Xueying He

Sr. Unix Sys Admin
Information Systems
School of Public Health
Johns Hopkins University
Phone: (410)614-1940
Fax: (410)955-1752

This archive was generated by hypermail 2.1.2 : Fri Sep 28 2001 - 23:13:19 CDT