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Adding Additional space to existing RAID5 on NetWare

I have a users who has an existing Netware server running on a HP DL380 G3. The raid partition has a online space on it as well. He has two empty slots on the server and would like to add an additional drive in it for additional space. I have done thus several times on Windows servers, but I don't recall ever doing this on Netware. I know you can go into smart start cd and go into the array utilities to expand the partition, but what I don't know is how you get the existing netware nss volume to see the additional space, or do you have to recreate the partition and restore from backup. Any help would be appreciated.
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On Thu, 28 Jun 2012 13:06:02 GMT, jlewter
<jlewter@no-mx.forums.novell.com> wrote:

>
>I have a users who has an existing Netware server running on a HP DL380
>G3. The raid partition has a online space on it as well. He has two
>empty slots on the server and would like to add an additional drive in
>it for additional space. I have done thus several times on Windows
>servers, but I don't recall ever doing this on Netware. I know you can
>go into smart start cd and go into the array utilities to expand the
>partition, but what I don't know is how you get the existing netware nss
>volume to see the additional space, or do you have to recreate the
>partition and restore from backup. Any help would be appreciated.


Use nssmu for this. IIRC, you need to initialize the new partition
and then you can increase the pool size to use it. And depending upon
your controller, you might be able to use cpqonlin.nlm to expand the
array instaed of using the smart start cd. I have done this a few
times without any problems, but make sure you have a good backup just
in case.

Regards,
Ken
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Always. I have done this plenty of times with Windows on HP boxes, but Netware it has been a while. I remember that nlm(cpqonlin) as well, but like I said it has been years since I have used it. So basically using Smart Start or CPQONLIN you expand the raid. Once that is done, you go into nssmu and increase the pool size. There is an option in there to see the it. So the new drive will have to be created as a new partition and once that is done you add it somehow to the current pool. Then the current volumes attached to that pool can grow into it, correct?
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On Thu, 28 Jun 2012 18:06:02 GMT, jlewter
<jlewter@no-mx.forums.novell.com> wrote:

>
>Always. I have done this plenty of times with Windows on HP boxes, but
>Netware it has been a while. I remember that nlm(cpqonlin) as well, but
>like I said it has been years since I have used it. So basically using
>Smart Start or CPQONLIN you expand the raid. Once that is done, you go
>into nssmu and increase the pool size. There is an option in there to
>see the it. So the new drive will have to be created as a new partition
>and once that is done you add it somehow to the current pool. Then the
>current volumes attached to that pool can grow into it, correct?


In between expanding the raid and increasing the pool size, you need
to initialize the space. See
http://www.novell.com/support/kb/doc.php?id=10096727
You're on the right track.

Regards,
Ken
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Ok, if I follow then add the disk and use Smart Start or CPQONLIN to expand the Array. Then use NSSMU to initialize the new disk space and then expand the pools. Sounds simple enough. Thanks for the info.
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On Thu, 28 Jun 2012 23:26:02 GMT, jlewter
<jlewter@no-mx.forums.novell.com> wrote:

>
>Ok, if I follow then add the disk and use Smart Start or CPQONLIN to
>expand the Array. Then use NSSMU to initialize the new disk space and
>then expand the pools. Sounds simple enough. Thanks for the info.


Yep. Just make sure you initialize the new space and not existing. I
always double and triple check myself before I press the button.
Haven't had to do a restore yet. 🙂
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I checked the customer site today. He is running a DL380. He says he originally has 3 72GB drive in it, and then about a year ago added a fourth. When you go into nssmu, it shows no additional space to create a partition on it. In cpqonlin, in the logical view it shows 3 drives being in the array and the fourth is shows unused and if you highlight it it give you the create prompt. If you go into the physical view it shows all 4 being in the array. We are going to go onsite and run smart start on it to see what that shows before we move further. Not real crazy about what it showed today.
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That sounds about right IIRC, I've done this a couple of times myself.

You need to add the new drive to the existing RAID5 array, at which point the Smart Array controller will re-stripe the RAID 5 data across all of the drives leaving you with the new unallocated amount of disk space, free and unused, but spread across all the drives. You then add the new unused space as a new partition as detailed above. But the drive controller first needs to (transparently to the OS at the controller level) spread the data and RAID parity across all the disks in your array to continue to provide the RAID 5 protection.

BR,
Mark.
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This is the deal we have with this server. The customer added a fourth drive into the cage a while back. He is not sure if he did anything else with it, which helps allot. When I go into cpqonlin, it shows the 4 drives in the physical like their all part of the array. If we change to the logical view it show the RAID Log Drive 1, and then the other 72gb drive separate. When we highlight it it gives the option to create logical drive. The weird things though is that it is a 72GB drive and it shows as 92GB in cpqonlin. We booted with smart start and it showed 92GB as well. In the physical view it shows the drive as 72GB correctly, but like it is part of the array. We are not sure how to proceed from here. If you pull the drive it shows the array in interim mode, and then we plug the drive back in and it shows it rebuilding the array. If that drive wasn't part of the array not sure why it shows it rebuilding the array.
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On Thu, 12 Jul 2012 23:06:01 GMT, jlewter
<jlewter@no-mx.forums.novell.com> wrote:

>
>This is the deal we have with this server. The customer added a fourth
>drive into the cage a while back. He is not sure if he did anything else
>with it, which helps allot. When I go into cpqonlin, it shows the 4
>drives in the physical like their all part of the array. If we change to
>the logical view it show the RAID Log Drive 1, and then the other 72gb
>drive separate. When we highlight it it gives the option to create
>logical drive. The weird things though is that it is a 72GB drive and it
>shows as 92GB in cpqonlin. We booted with smart start and it showed 92GB
>as well. In the physical view it shows the drive as 72GB correctly, but
>like it is part of the array. We are not sure how to proceed from here.
>If you pull the drive it shows the array in interim mode, and then we
>plug the drive back in and it shows it rebuilding the array. If that
>drive wasn't part of the array not sure why it shows it rebuilding the
>array.


Checking one of my servers that started with 5 disks...added 1 disk
later and then added two more at a later date. It shows three logical
drives. If the customer started with 3 drives and then added a fourth
and expanded the array, I would expect to see two logical drives. But
I don't have a clue about the 72/92 discrepancy. I'm not sure what to
suggest. Maybe someone more experienced with HP RAID arrays will jump
in with ideas. Whatever you do, make sure you have good backups.
Sorry I can't provide more help.

Regards,
Ken
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Knowledge Partner

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