MSA Storage

HP 2040 expand pool with new disk group

 
itkenneth
Occasional Advisor

HP 2040 expand pool with new disk group

I had a MSA 2040 with 7 disks. 6 disks for data and 1 disk for Global Spares. I created a pool A with 6-disks group, type was virtual pool and raid 0+1 .
Now, i buy 5 new disks, same information, same type, same size ...
I want to expand this 5 new disks to pool A(virtual pool).
It is work ? How can do this?
Thank you

13 REPLIES 13

Re: HP 2040 expand pool with new disk group

It's better if you can buy another same size same type drive. Then create new Virtual Disk Group. Then you need to add this new VDG to Pool A as per procedure below,

To add a disk group
1. In the Pools topic, select Action > Add Disk Group.
The Add Disk Group panel opens.
2. Set the options.
3. If you are creating a linear disk group, select the RAID [number] or SPARE option to determine if you will be selecting
disks for the RAID configuration or as dedicated spares for the disk group.
4. Select the disks.
5. Click Add.
If your disk group contains a mix of 512n and 512e disks, a dialog box displays. Perform one of the following:
 To create the disk group, click Yes.
 To cancel the request, click No.
If the task succeeds, the new disk group appears in the Related Disk Groups table in the Pools topic when you select
the pool for it in the pools table.

 

Hope this helps!
Regards
Subhajit

I am an HPE employee

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itkenneth
Occasional Advisor

Re: HP 2040 expand pool with new disk group

But I want to expand this 5 new disks to same pool A(virtual pool).

Re: HP 2040 expand pool with new disk group

Yes I have suggested same only.

New VDG creation and add it to Pool A

 

Hope this helps!
Regards
Subhajit

I am an HPE employee

If you feel this was helpful please click the KUDOS! thumb below!

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I work for HPE
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itkenneth
Occasional Advisor

Re: HP 2040 expand pool with new disk group

can i use same vdg?

Re: HP 2040 expand pool with new disk group

No that's not possible in Virtual Array that's why you can't expand VDG.

Expand concept only works in linear array and in Vdisk only

 

Hope this helps!
Regards
Subhajit

I am an HPE employee

If you feel this was helpful please click the KUDOS! thumb below!

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I work for HPE
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itkenneth
Occasional Advisor

Re: HP 2040 expand pool with new disk group

my hp2040 alway is higher loading that it is load many vm.

So i put some vm to other server.

But now i want to group all vm together in this hp2040.

Therefore , i buy more five hdd in now.

i should broken up VDG  that set 11 hdd to VDG?

Or reserved old vdg and add new vdg for put other vm?

which one will have less loading? have big different? 

Re: HP 2040 expand pool with new disk group

Let me explain the MSA architecture.

Collection of physical drives made VDG.

Then VDG gets added to Pool A or Pool B

After that you create Volume from Pool A or Pool B

This Volume actually holds all VMs at the host side. So it doesn't matter this Volume got space from which VDG. In a Pool it can be multiple VDG possible and space can get allocate from any VDG. This is MSA Virtualization unlike linear array where you know which physical disk responsible for which Vdisk so you know volume gets space from which disk drive.

My suggestion will be if you want to increase size of the Pool and planning to create new VDG then always try to create VDG with same number of drives, same type drives, and same size drives. Also try to keep RAID level also same for all same tier drives VDG. This will help to increase performance of the system.

One Pool can contain different drive type VDG as well. Like there can be FC VDG, SSD VDG and NL VDG.

 

Hope this helps!
Regards
Subhajit

I am an HPE employee

If you feel this was helpful please click the KUDOS! thumb below!

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I work for HPE
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itkenneth
Occasional Advisor

Re: HP 2040 expand pool with new disk group

now , I want to expand this 5 new disks . increase iosp that it will have better loading?

i have two controller that i put new vdg to new controller b , is it better? 

controller a and pool a is same item?

----------------------------------------

 

I had a MSA 2040 with 7 disks. 6 disks for data and 1 disk for Global Spares. put controller a.  I created a pool A with 6-disks group, type was virtual pool and raid 0+1 .

Now, i buy 5 new disks, same information, same type, same size ...
I want to expand this 5 new disks to controller b . type was virtual pool and raid 6 .

is it good?

Re: HP 2040 expand pool with new disk group

now , I want to expand this 5 new disks . increase iosp that it will have better loading?

Ans: If you add this 5 drives under a new VDG but under same Pool then space and IOPs both will increase

i have two controller that i put new vdg to new controller b , is it better? 

Ans: These new 5 drives with new VDG and new volume if you are planning to take care new VMs then it's good to plan them for Pool B so that load balance will happen. Otherwise if all VMs part of same Pool then all writes will happen primarily through Controller A only which may impact in performance

controller a and pool a is same item?

Ans: Technically its not same. But Controller A takes care of Pool A and Controller B takes care of Pool B

 

Hope this helps!
Regards
Subhajit

I am an HPE employee

If you feel this was helpful please click the KUDOS! thumb below!

**********************************************************************


I work for HPE
Accept or Kudo