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RAID 1+0 problem

Gavarustin
Advisor

RAID 1+0 problem

I have a HP Prolaint Server with a Smart Array Controller 641 and four 72GB SCSI HDD Hot Plug in RAID 1+0

I added two 146 GB HDD in RAID 1+0

Before expend array:
Two logical drive 1- 72 GB, 2 - 72 GB
After expend array:
Three logical drive 1-72 GB, 2 - 72 GB, and 3 - 72 GB,
I don’t understand way the two HDD (146 GB) is not creating a logical drive 3 - 146GB.\
I have a warning message the HDD is not the same capacity.
8 REPLIES
TTr
Honored Contributor

Re: RAID 1+0 problem

> I have a warning message the HDD is not the same capacity.

Where did you get this warning and for which drives? This warning means that the two drives are not the same size, maybe you put in one 146Gb and one 72GB drives?

Were you able to see the TWO NEW drives showing up as 146GB drives in ACU?
Gavarustin
Advisor

Re: RAID 1+0 problem

Ok,

I use Online Array Configuration Utility in Netware server

Before expand array:

Physical Configuration View
Smart Array 641 Controller
SCSI Array A
72.8 GB ID 2
72.8 GB ID 3
72.8 GB ID 4
72.8 GB ID 5

Logical Configuration View
Smart Array 641 Controller
SCSI Array A
69459 MB RAID 1+0 Log Drive 1
69459 MB RAID 1+0 Log Drive 2

After expand array:

Physical Configuration View
Smart Array 641 Controller
SCSI Array A
146.8 GB ID 0
146.8 GB ID 1
72.8 GB ID 2
72.8 GB ID 3
72.8 GB ID 4
72.8 GB ID 5

Logical Configuration View
Smart Array 641 Controller
SCSI Array A
69459 MB RAID 1+0 Log Drive 1
69459 MB RAID 1+0 Log Drive 2
69459 MB RAID 1+0 Log Drive 3
TTr
Honored Contributor

Re: RAID 1+0 problem

It looks to me that you added the two drives to the same array A which is a mirror and stripe array and it expanded to the two new disks.

> Logical Configuration View
> Smart Array 641 Controller
> SCSI Array A
> 69459 MB RAID 1+0 Log Drive 1
> 69459 MB RAID 1+0 Log Drive 2

The above does not mean that Drive 1 is on the two disks ID 2 and ID3 and Drive 2 is on disks ID 4 and ID 5. What it means is that Drive 1 is on all 4 disks and Drive 2 is on all 4 disks.

When you added the new 146GB disks it can not use them.

What you should have done is create a new array B using the two new disks only.
Gavarustin
Advisor

Re: RAID 1+0 problem

Ok,

I cannot assign a group of physical drives to the same array unless they are of the same capacity. If the drives have different capacities, the excess capacity of the larger drives cannot be used by the array and is wasted.

I must to create a new array B.
Gavarustin
Advisor

Re: RAID 1+0 problem

I want to create a new Array B with the two drives.
I delete the logical drive 3 but the physical drive is assigned an array A.
How to delete in ACU the two physical drives in array A?I cannot see this option.

TTr
Honored Contributor

Re: RAID 1+0 problem

Unfortunately I don't have access to an ACU right now and have never used it in Novell.
TTr
Honored Contributor

Re: RAID 1+0 problem

This doc on bottom of page 21 clearly creates a new array. Not sure if your two 146GB disks already have array A info written in them and are automatically assigned to array A when inserted in the slots.

http://docs.hp.com/en/9320/acu.pdf

The Novell ACU may be different too.
Gavarustin
Advisor

Re: RAID 1+0 problem

If the logical drive 3 is not initializing in OS that means I donâ t have data here.

I delete the logical drive 3 and now the 2 physical drives is like unused drive but is assigned on A array.

I want to know whatâ s happened if I take off this last drives added in my array A and I restart the server. I can have a message warning about the 2 physical drive is missing?

It is possible to have an option on reboot to delete this drive on my array A?