Disk Array

[Bill McNAMARA_1]

yes, for performance reasons and ha reasons..

In both cases:
A0,B0,C0,D0,E0,A2,

There are 2 disks on internal bus A. This is going to cause a bottleneck on the lun..

B2,C2,D2,E2,A1,B1,
In this case there are two disks on bus B.

The best thing is
A0 B0 C0 D0 E0

5 disks, one disk per internal bus... ie no internal bus sharing for the same lun.

It's worth it in the end....


Later,
Bill

[Bill McNAMARA_1]

by HA I mean, if the bus A fails (internal bus) you will loose 2 disks in the LUN.
Thus unrecoverable data loss for a Nike20.
It's rare, but possible.

The real concern is performance.

Bill

[shaikh_mahaboob]

hi

I started binding LUN as u said R5 5 disks

and R5 5 disks and 2 disks R1

after that what to do

thanks
Shaikh

[Bill McNAMARA_1]

on host

# ioscan -f

top

# ioscan -fnkCdisk


Verify the devices are CLAIMED

To create the device files:

insf -eC disk

# ioscan -fnkC disk

pvcreate
vgcreate
lvcreate
newfs
mount

Have you determined if the other controller has failed..

?? Can you connect to SPB via gridmanager..

?? What are the scsi connections like..

[shaikh_mahaboob]

hi

Stil i am not able to go through SPB from grib mgr

thanks

Shaikh

[Bill McNAMARA_1]

disable SPB with the switch.

pull it out

and reinsert it

connect the RS232 cable to the SPB port.

Click the switch into enable.

You should see boot messages on the console while SPB initialises.

Report any PANICs here.

You've got 2 mins when opening the fan door to close it again.. or the array will shutdown and your bind will stop!


There is a push button that'll reset the two minute timer on the left of the fan door inside.


Bill

[Bill McNAMARA_1]

Bind should be done by now?

Later,
Bill

[shaikh_mahaboob]

hi

I have created 2 R5 partions with 5 disk and one Disk Mirror with 2 disks. is this ok.


Thanks
Shaikh

[Bill McNAMARA_1]

good,

now remove and replace the SPB, exactly like I mentioned above (2 messages above)

Then we can figure out if the SPB is failed..

Bill