adding a disk to an Autoraid unit

[Scott Dunkley]

you ask if I will be replacing a disk, is this becuase the unit is full? I dont have physical access to the unit so I cant tell you if there are any free slots or not?

Out of interest how many physical devices can one of these autoraid units hold?

thanks for the information, very interesting.

[A. Clay Stephenson]

Yep, the 12H has 12 disk module slots so it's full. By the way, 36GB modules are also made but you need to install at least 2 to reap any benefit and 3 or 4 is even better.

[Rainer von Bongartz]

Yes the cabinet is full !

slots go from A1;B1 to A6;B6, which makes twelve disks (12H)

So you have to replace a small disk with a larger one. Pull out the disk, wait for the array to rebuild and insert the new disk.

Regards
Rainer

[Joshua Scott]

Ummm, There's no disk in B6... how can it be full?

If you add the 18GB Drive to the array, you will gain about 18GB of space.

Josh

[Scott Dunkley]

yeah I agree with Josh, B6 has no disk in it as far as I can tell from the output I have attached.

So from what A.Clay was saying I will get near enough the full 18Gb to use.

[A. Clay Stephenson]

You are correect, I somehow counted 12 disks instead of 11. You will get almost the full 18GB's and an additional 18GB's if you turn off Active Hot Spare BEFORE creating (BIND'ing) the new LUN.

[Scott Dunkley]

Thanks all, very informative.

[Scott Dunkley]

Sorry to bring this to the top but i am in the middle of attempting this.

I have allocated the new disk space to a new LUN. I now want to extend a VG but the VG is a shared clustered VG (distributed). I have tried undistributing the VG but it says it needs to be deactivated first which means down time.

is there anyway to do this on the fly?

[Karthik S S]

Scott,

What do you mean by

"I have tried undistributing the VG but it says it needs to be deactivated first which means down time."

??

You can extend a VG when it is online using vgextend command

ex:
pvcreate /dev/rdsk/cxtxdx (path of the new lun)
vgextend vgname /dev/rdsk/cxtxdx

However if you need to extend a LV or filesystem you need to have OnlineJFS in order to do it on the fly ..

-Karthik S S

[Scott Dunkley]

Yeah I sorted it after I had posted. I was trying to extend the VG using SAM and thats when it came back with the message about not being able to extend the VG as it is distributed. So I tried to undistribute it using SAM and got the message about deactivation.

So.... I tried it on the command line and it worked fine.

Thanks for your help.