Need to replace HDs in a Raid 5 with bigger HDs

Posted on 2005-04-06
Medium Priority
Last Modified: 2010-04-03
I have a raid 5 container with 3x74gb scsi and 1 failover. I want to increase the size of the container. I have bought 4x146gb SCSI HDs. I was wondering if there is anyway to do this without bringing down the server. I have read if i take 1 out, replace it with the bigger one, wait for it to rebuild and keeping doing that until the container is fully rebuild that will work. Is this the correct way or is there another way to do this.
I have dell PE 2650, running win2k3 server and my exchange is on this.

Question by:oyashare
  • 2
  • 2
LVL 97

Accepted Solution

Lee W, MVP earned 315 total points
ID: 13722224
If you don't want to take the server down, that's what I'd do.

First, replace the hot spare.  Then take one at a time out and replace them.  Once all drives have been replaced, you'll need to use the Dell Open Manage Array Manager to extend the RAID 5 Partition or create a second partition from the extra disk space.
LVL 13

Assisted Solution

gpriceee earned 60 total points
ID: 13723365
I agree with leew.
Just make sure you have a full backup prior to replacing the drives and that you are absolutely sure the rebuild is done before R&Ring another drive.

Author Comment

ID: 13729388
Anything i should worry about doing that? like performance hit on the server and such?
LVL 97

Expert Comment

by:Lee W, MVP
ID: 13729665
I don't see why performance would degrade... EXCEPT while the system is rebuilding the drive, as the controller has to spend resources rebuilding the removed disk.

BUT, as gpriceee suggests,  do a backup first.  Wouldn't it be great if midway through the rebuild of disk 2, disk 1 failed and you lost everything because you didn't have a backup....?

Author Comment

ID: 13729955
Thanks. I will give it a try. Just wanted to confirm the way i knew was the right way to do it.

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The article will include the best Data Recovery Tools along with their Features, Capabilities, and their Download Links. Hope you’ll enjoy it and will choose the one as required by you.
Each year, investment in cloud platforms grows more than 20% (https://www.immun.io/hubfs/Immunio_2016/Content/Marketing/Cloud-Security-Report-2016.pdf?submissionGuid=a8d80a00-6fee-4b85-81db-a4e28f681762) as an increasing number of companies begin to…
This video teaches viewers how to encrypt an external drive that requires a password to read and edit the drive. All tasks are done in Disk Utility. Plug in the external drive you wish to encrypt: Make sure all previous data on the drive has been …
Despite its rising prevalence in the business world, "the cloud" is still misunderstood. Some companies still believe common misconceptions about lack of security in cloud solutions and many misuses of cloud storage options still occur every day. …
Suggested Courses
Course of the Month15 days, 2 hours left to enroll

840 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question