Hi, Experts:
The following is my origin question:
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Hi, experts:
We are using Digital Unix 4.0E, and we want to config Raid 0+1 on HSZ70. The Disks's capacity is 18GB.
In the Array, we now had some Raid 5. The Disks's capacity is 9GB.
I want to know:
1) Can we config Raid 0+1 along with Raid 5?
2) How to config Raid 0+1, please give me the detail procedures.
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In a short time, I received some reply.
Mr. Darryl Milczarek (darryl.milczarek_at_emsusa.com) sent me a detail e-mail with the procedure of
"Steps to creating new mirrored strip set on HSZ50 controller".
Create stripe set at the HSZ50 controller using CLI.
Reconfigure the kernel (which will then recognize the new device).
Note: This was the tricky part, as you can NOT see the new device
until the kernel is rebuilt and the server rebooted.
Reboot server with shutdown -r now.
Review file /usr/var/adm/messages to locate newly recognized device,
in this case 'rzf24'.
Zero out the disklabel:
# disklabel -z rzf24a
Create the special files for new device:
# ./MAKEDEV rzf24
MAKEDEV: special file(s) for rzf24:
Check to see changes made in /dev:
# ls -al rzf24*
Make the device read/write:
# disklabel -rw /dev/rrzf24c HSZ50
Check that the device changed:
# ls -al rrzf24*
Make it AdvFS:
# disklabel -s /dev/rrzf24c AdvFS
Create the file domain:
# mkfdmn /dev/rzf24c u06_domain
/dev/rrzf24c is marked in use for AdvFS in the disklabel.
If you continue with the operation you can
possibly destroy existing data.
CONTINUE? [y/n] y
Create the file set:
# mkfset u06_domain u06
Create the mount point directory:
# mkdir /u06
Mount the file set:
# mount -t advfs u06_domain#u06 /u06
Check your work:
# df -k
See what is in the newly mounted file set:
# cd /u06
# ls -al
*******
Mr. Lyndon (l_handy_at_hotmail.com) wrote:
1) Build a set of mirror's, 2 disks each. Preferably 6 sets of 2 = 12
disks.
2) STRIPE (RAID0) 3 sets with the second 3 sets, and enable writeback
caching when you create the units.
The performance will absolutely fly.
II Option II.
a) Build many RAID5 sets on the HSZ70.
b) Use LSM to s/w STRIPE the RAID5 sets together. Awesome performance.
This is actually RAID 0+5 two-dimensional.
*******
John Gormley(jgormley_at_scu.edu.au) had suggested me to read the manual of storageworks HSZ70 array controllerCLI reference manual, because there is a great example under "Add Stripeset". Because the book could not be find at this time, he kindly fax it to me (although because of the fax had some problem, I had not received).
Thank you all very much!
I will test it in the evening on the test machine, if I success, I will apply it to the production machine in the weekend. If I encounter any problem that I cannot solve, I will expect your help again.
Thanks!
This list is very great!
(0765)-6339137
Oracle Database Administrator
Digital Unix Sys Admin
WinterSun Zhao
zhaohl_at_midea.com.cn
Received on Thu Mar 08 2001 - 06:32:22 NZDT