?
Solved

RAID 10 on Dell PowerEdge 2900

Posted on 2014-03-26
8
Medium Priority
?
665 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
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 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 2000 total points
ID: 39957359
did you try to set the drive as hot spare?
0
NEW Veeam Agent for Microsoft Windows

Backup and recover physical and cloud-based servers and workstations, as well as endpoint devices that belong to remote users. Avoid downtime and data loss quickly and easily for Windows-based physical or public cloud-based workloads!

 

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 35

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

Enroll in August's Course of the Month

August's CompTIA IT Fundamentals course includes 19 hours of basic computer principle modules and prepares you for the certification exam. It's free for Premium Members, Team Accounts, and Qualified Experts!

Question has a verified solution.

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

Data center, now-a-days, is referred as the home of all the advanced technologies. In-fact, most of the businesses are now establishing their entire organizational structure around the IT capabilities.
This article aims to explain the working of CircularLogArchiver. This tool was designed to solve the buildup of log file in cases where systems do not support circular logging or where circular logging is not enabled
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 …
In this video, Percona Solutions Engineer Barrett Chambers discusses some of the basic syntax differences between MySQL and MongoDB. To learn more check out our webinar on MongoDB administration for MySQL DBA: https://www.percona.com/resources/we…
Suggested Courses

765 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