Expansion of HP MSA 2050 with VMware ESXi

I have MSA 2050 with 2 Volumes (vol1 and vol2)which is connected to ESXi6.5 as datastore.
I have added 6 more HDDs on a different expansion enclosure and created one more volume (vol3)
I can see the newly created volume in expansion page. Below are the screenshots, Just want to verify I am doing right
Capture0.JPGCapture1.JPGCapture2.JPGCapture3.JPGWill I loose my data if I click yes from the above step?
.
Below is the enclosure screenshot.
Capture4.JPG
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MASEE Solution Guide - Technical Dept HeadAsked:
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Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization ConsultantCommented:
You will lose the data if you click Yes, if there is any data.

BUT is this a new LUN on the MSA (volume3)?

if this is a new LUN, it's being freshly created. does 7.57TB match the volume 3?

Are you creating a new DATASTORE, or EXPANDING a current datastore ?

Are volume 1 and volume 2 = 1 single datastore ?

with you A and B in the diagram, did you first create volume 1, and create a datastore, add more disks (B), create a volume 2, and then add it to  previous datastore to expand it ?

and now want to expand again, add new disks, created volume 3 and want to expand the datastore.

(normally you would add disks into A..... and have one large virtual disk A on the SAN, and then divide up into LUNs to create datastores)
MASEE Solution Guide - Technical Dept HeadAuthor Commented:
-->BUT is this a new LUN on the MSA (volume3)?
yes
-->if this is a new LUN, it's being freshly created. does 7.57TB match the volume 3?
Yes
-->Are you creating a new DATASTORE, or EXPANDING a current datastore ?
Expanding the current one.
-->Are volume 1 and volume 2 = 1 single datastore ?
Different Datastore
-->with you A and B in the diagram, did you first create volume 1, and create a datastore, add more disks (B), create a volume 2, and then add it to  previous datastore to expand it ?
Yes. This is what I am trying to do but afraid of data loss.
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization ConsultantCommented:
Okay this question is with reference to this data on this LUN (new LUN) not the old LUN.

(first prompt, which states this device is unclaimed)

Continue, and will expand current datastore.
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MASEE Solution Guide - Technical Dept HeadAuthor Commented:
-->Continue, and will expand current datastore.
Can I click yes and continue on the below prompt ?  Are you sure there is no dataloss?
Capture3.JPG
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization ConsultantCommented:
Yes - see this video..

https://www.youtube.com/watch?v=-8QlkV7PAiM

But any Production system, should have backups just in case of loss. Basic change control.

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MASEE Solution Guide - Technical Dept HeadAuthor Commented:
I am still worried because the new LUN is on expansion module.
Image here
Capture4.JPG
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization ConsultantCommented:
I'm not sure why you didn't add those new disks into existing B (LUN) create on current unit.

Biggest issue is if that expansion module goes off or down, the entire datastore is lost.

We've always added to existing Array (I think that's what HPE calls them) and then we cut (carve out virtual disks) on the SAN, these are LUNs then presented to ESXi, these can be grown on the SAN on the fly, and expanded on ESXi
MASEE Solution Guide - Technical Dept HeadAuthor Commented:
-->I'm not sure why you didn't add those new disks into existing B (LUN) create on current unit.
I am sure of how to add to the same LUN assuming its different enclosure it cannot be added.
Please correct me if I am wrong. Thank you very much for your time.
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization ConsultantCommented:
That is a possibility across an Expansion Module, @AndyAdler would know for sure.
MASEE Solution Guide - Technical Dept HeadAuthor Commented:
Can you please send me an article how to add new HDDs to the current LUN?
andyalderCommented:
It doesn't differentiate between whether disks are in the base enclosure or an expansion one. Best practice if you have multiple enclosures is to arrange disks in arrays vertically, then under some circumstances you can lose a whole enclosure and still keep running, rarely ends up that way since people expand rather than buy 7 additional enclosures to start with, MSA2050 is limited to 16 disks in an array
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization ConsultantCommented:
Our HSG80 was arranged like that sad it's gone now!
MASEE Solution Guide - Technical Dept HeadAuthor Commented:
I can see one LUN size is expanded by running command "expand volume size <sizeinGB> volume1"
But it is not effected in ESXi. I cannot see the updated size in ESXi.
  Capture4.PNGThis is what I can see in the pools
 HPO.png
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization ConsultantCommented:
You may have to Refresh Storage Controllers or Rescan

Or add the current unclaimed space
MASEE Solution Guide - Technical Dept HeadAuthor Commented:
-->You may have to Refresh Storage Controllers or Rescan
I tried refreshing but it didnt help
not sure about rescan and how to add unclaimed space.
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization ConsultantCommented:
You need to select HBA and issue a rescan
MASEE Solution Guide - Technical Dept HeadAuthor Commented:
I rescanned all adapters (HBAs)  but no luck. :(
Appreciate your help
andyalderCommented:
Is the volume expansion complete? You won't see the extra space until it is. Don't know if show volumes can confirm that or not. Pretty sure it is in the SMU GUI.
MASEE Solution Guide - Technical Dept HeadAuthor Commented:
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization ConsultantCommented:
when you click Increase datastore, you've got two options, and then the next setting should show any unclaimed space or new luns, to expand into.
MASEE Solution Guide - Technical Dept HeadAuthor Commented:
I added 4TB out of 8 TB but I cannot add the remaining 4 TB
Now I can see 4TB added to the current datastore but cannot use the balance 4TB
Capture.PNG
MASEE Solution Guide - Technical Dept HeadAuthor Commented:
I deleted two volumes and create a single volume with bigger size.
Now it shows unallocated
Capture.PNG
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