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June 10th, 2025 21:38

Upgrading drives in a PERC H730P Adapter RAID 10 array

I have a PowerEdge T440.  It has the PERC H730P Adapter with four 2TB HDDs in a RAID 10 array.  I plan to replace (hot-swap) the HDDs with new 2TB SSDs.  I plan to replace the drives one at a time, allowing time for the array to rebuild after each replacement.  I have the latest version of Dell OpenManage Server Administrator installed and working. Questions:

  • Can I expect the RAID array to automatically rebuild after replacing each disk?
  • If not, can I use OpenManage to start and monitor the array rebuild?  How?

As an alternative, what if I add the SSDs as hot spares, then promote the spares to front-line members of the array, retiring the HDDs?  

  • Will the added SSDs automatically become hot spares for the array?
  • If not, can I use OpenManage to add them to the array as hot spares?  How?

TIA!

Moderator

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3.9K Posts

June 13th, 2025 02:04

Hi,

 

Seems to be a good route to take. Just make sure that the SSDs are supported by the server. Preferable Dell certified drives. 

 

I can't think of anything to top up advice, at the moment. 

4 Operator

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2.2K Posts

June 10th, 2025 22:22

If the automatic rebuild isnt startet you can mark the Disk as a Hotspare and assign the Hotspare to the diskgroup.

You cant mix different Type of disks like SAS / SATA and SSDs within a diskgroup. So a SSD ever cant be a Hotspare for a non SSD Diskgroup.

I can see the rebuild status within your NAGIOS monitoring so at least "omreport" will show it. I remeber that somewere was a progessbar within the iDRAC or OpenManage but i cant remember where.

Regards,

Joerg

Moderator

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3.9K Posts

June 11th, 2025 07:10

Hi,

 

To top up with Joerg's reply:

 

SSDs cannot be mixed with disk drives within a virtual disk, it is not supported. Page 84: https://dl.dell.com/manuals/all-products/esuprt_ser_stor_net/esuprtl_adapters/poweredge-rc-h830_User's%20Guide_en-us.pdf. Another note to take on page 48, "The replacement disk must be of the same protocol and disk technology. For example, only a SAS hard drive can replace a SAS hard drive and only a SATA SSD can replace a SATA SSD."

 

If the hardware matches according to the requirement from user guide, the RAID array can automatically rebuild. On some occasions, you will need to assign the drive to the RAID array for it to rebuild. You can monitor the rebuild if it is successfully started, a new column in OMSA will appear on the Virtual Disk page, "Progress" column. Alternative to check is by using omconfig cli: https://www.dell.com/support/kbdoc/en-my/000137721/how-to-rebuild-virtual-disk-via-openmanage-server-administrator-omsa

 

You can use OMSA to add hotspare to specific virtual array, it is under the action menu in the Virtual Disk page. But reminder, SSDs cannot be mixed with disk drives. 

 

Here's an article on assigning hotspare: https://www.dell.com/support/kbdoc/en-my/000178190/dell-poweredge-how-to-assign-a-hard-drive-in-global-hot-spare

1 Rookie

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4 Posts

June 11th, 2025 12:09

Is there a pathway whereby I can replace the HDDs on this machine with SSDs?  For example, can I create a second virtual disk comprised of the SSDs, mirror the first virtual disk to the second, then "retire" the first virtual disk and remove the HDDs?

Moderator

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9.4K Posts

June 11th, 2025 12:18

The supported path would be to backup the existing HDD Virtual Disk, then delete and recreate it with the SSDs, then reinstall the OS and restore the data from backup. I state this as we don't support imaging to "mirror" it from one VD to another, as that has inherent instabilities compared to the supported path. 

 

Let me know if this helps.

 

 

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4 Posts

June 11th, 2025 13:08

This server is hosting a single hyper-v virtual machine.  There are local and remote hyper-v replicas of the virtual machine.  The virtual machine is running OLTP Windows database. 

I don't have a service window long enough to backup, do a fresh install, restore and allow for problems that arise.  Is there a fail-safe solution?  

Moderator

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9.4K Posts

June 11th, 2025 13:13

We are only able to provided supported solutions, so you would need to wait and see if the community provides any ideas.
 

 

1 Rookie

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June 12th, 2025 20:52

What do you think of this as a fail-safe solution?

  1. Install 2x 2TB enterprise SSDs
  2. Create RAID 1 array via PERC H730P
  3. Use Hyper-V live storage migration to move VM from HDD array to SSD array

VM continues running throughout the process and VM performance gets the benefit of the new faster SSD array.  The host OS stays on the HDD array.

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