• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 116
  • Last Modified:

Upgrading Drives on Virtual disks RAID 1 Dell Perc 710 controller

I am trying to upgrade a RAID 1, virtual disk  configuration on a DELL PERC 710 controller.  Drive space has become an issue.  My initial thought on how this might work was to do it through Dell Open Manage ( Server needs to be online) and select the replace member disk function through the virtual array options and replace it with the larger disk,  after that is completed, then I would repeat the same process on the other disk as well.

What I am unclear of if the PERC 710 permits this?  From what I read in the manual, it doesn't state that it can't be done and it seems under the virtual disk, replace member disk option, that it is possible.  Will this work just on failed disks or can it be used on a functioning disks as well?
0
Mikejett
Asked:
Mikejett
1 Solution
 
andyalderCommented:
Replacing disks on a Dell PERC with larger ones doesn't make the extra space on those disks available unlike what happens on some other controllers. You can gamble on re-tagging the array (delete it after both rebuilds have completed, then create an identical array on top but *do not initialize* and the data is still there because nothing overwrote it.

Not too big a gamble with RAID 1 though, if it all blows up in your face you can still import one of your old disks.
0
 
Casey WeaverNetwork EngineerCommented:
Here is a walkthrough for it: https://www.dell.com/support/article/us/en/19/sln156106/reconfiguration-of-virtual-disks-on-the-poweredge-raid-controller-perc-h310-h710-h710p-and-h810?lang=en

But yes, there's no issues using Replacing Member on functioning disks to replace them with larger disk. Do Replace Members on both disks (one at a time, and allowing the rebuild to complete). Then you can use OCE (Online Capacity Expansion) to complete the expansion into the newly available free space. Remember that there will be poorer performance and disk failure risks until the processes complete, so keep good backups.

When you've completed the expansion, it will show FREE SPACE in Disk Management if this is a windows server. You can expand your partition into that free space.
0
 
andyalderCommented:
Well, even if the two comments contradict each other you can still start the process and back out if needed, the PERC 6i definitely would need retagging, I'm not sure about the H700,
0
Improve Your Query Performance Tuning

In this FREE six-day email course, you'll learn from Janis Griffin, Database Performance Evangelist. She'll teach 12 steps that you can use to optimize your queries as much as possible and see measurable results in your work. Get started today!

 
andyalderCommented:
I'm amazed it worked without re-tagging the array, Dell must have modified the firmware since last time I did it.
0
 
PowerEdgeTechIT ConsultantCommented:
Yes, you can do this without a retag (never use the retag for expansion), but firmware must be up to date if this is an H700 in a PowerEdge R710 server. H710 can do this with early firmware - it is not clear at all from your post which controller you have. Older controllers could not expand in this way.
0
 
andyalderCommented:
I thought it was an R710, that could have a 6i in it.
0
 
MikejettAuthor Commented:
It is a T620 poweredge server with a PERC H710 Adapter.  I have not done any updates yet.  From  what is stated per the link, dell's site:

"Online Capacity Expansion (OCE) can be done in two ways. If there is a single virtual disk in a disk group and free space is available, the virtual disk´s capacity can be expanded within that free space. If a virtual disk is created and it does not use the maximum size of the disk group, free space is available. Free space is also available when a disk group´s physical disks are replaced by larger disks using the Replace Member feature. A virtual disk's capacity can also be expanded by performing an OCE operation to add more physical disks".

I guess that's a green light.
0
 
PowerEdgeTechIT ConsultantCommented:
Yes, you are good to go on an H710 controller.
0
 
PowerEdgeTechIT ConsultantCommented:
I thought it was an R710, that could have a 6i in it.
Yeah, both the H700 and PERC 6/i are supported in the PowerEdge R710.
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Improve Your Query Performance Tuning

In this FREE six-day email course, you'll learn from Janis Griffin, Database Performance Evangelist. She'll teach 12 steps that you can use to optimize your queries as much as possible and see measurable results in your work. Get started today!

Tackle projects and never again get stuck behind a technical roadblock.
Join Now