Solved

RAID 10 on Dell PowerEdge 2900

Posted on 2014-03-26
8
635 Views
Last Modified: 2016-12-08
Hi
I have a Dell PowerEdge Server 2900 with an PERC 5/I Integrated Controller.

It has been running using RAID 10 across 8 disks. As I understand it this is basically 4 sets of mirrored disks combined to give 1 virtual disk.

1 disk on 1 of the mirrored arrays has failed. Usually when the faulty disk is replaced the controller rebuilds the array and all is well.

However, this has not happened. The disk id now showing as Ready but the disk which was part of the original mirror is on its own.

I am using the Dell Server Manager to see this and cannot find a way to rebuild the mirror and thereby the RAID 10 array.

Any ideas how I do this?
0
Comment
Question by:JayHine
  • 4
  • 3
8 Comments
 
LVL 14

Expert Comment

by:Justin Yeung
ID: 39956955
if the disk was used previously on other array, you will have to remove "foreign configuration" before the process of auto rebuild.
0
 

Author Comment

by:JayHine
ID: 39957184
the new replacement disk was brand new.
0
 
LVL 14

Accepted Solution

by:
Justin Yeung earned 500 total points
ID: 39957359
did you try to set the drive as hot spare?
0
Three Reasons Why Backup is Strategic

Backup is strategic to your business because your data is strategic to your business. Without backup, your business will fail. This white paper explains why it is vital for you to design and immediately execute a backup strategy to protect 100 percent of your data.

 

Author Comment

by:JayHine
ID: 39957506
no I didn't . Will this definitely make it a mirror of the drive which is now a sigle drive rather than a mirrored disk?
0
 
LVL 14

Expert Comment

by:Justin Yeung
ID: 39957529
No harm at all
0
 

Author Comment

by:JayHine
ID: 39958235
I am sorry but your answer doesn't address my question. If I turn this into a hot spare how does it know that it is assigned to the single drive left from the damaged disk.

Is it not possible to recreate the original mirror and effectively rebuild the entire RAID 10 array again?
0
 
LVL 34

Expert Comment

by:Seth Simmons
ID: 39962503
that is the purpose of a hot spare
it will automatically start generating a rebuild on it when a drive fails
if you don't have a hot spare and no monitoring, etc. to know that the drive failed and the array degraded, you prolong your single-point of failure and risk total loss of the array

justin's comment is correct
setting that drive to a hot spare will rebuilt that array pair
0
 

Author Closing Comment

by:JayHine
ID: 39966845
worked perfectly. Once the disk was a hot spare it sorted the whole thing out.

Thanks
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
reclamation process error on TSM 6 67
RAID 5 and Upgrading drives 12 71
Why do powered external drives still exist when you can easily use a USB one? 10 42
robocopy 33 86
Finding original email is quite difficult due to their duplicates. From this article, you will come to know why multiple duplicates of same emails appear and how to delete duplicate emails from Outlook securely and instantly while vital emails remai…
When we purchase storage, we typically are advertised storage of 500GB, 1TB, 2TB and so on. However, when you actually install it into your computer, your 500GB HDD will actually show up as 465GB. Why? It has to do with the way people and computers…
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 …
This tutorial will walk an individual through the process of installing the necessary services and then configuring a Windows Server 2012 system as an iSCSI target. To install the necessary roles, go to Server Manager, and select Add Roles and Featu…

773 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