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
Solved

"Failure Predicted" Can I hot swap these drives?

Posted on 2014-03-03
6
4,776 Views
Last Modified: 2016-11-23
I have a dell power edge server, and the server manager is showing one of my RAID drives as "Failure Predicted" and the Status as "Non-Critical".

Obviously I would rather there NOT be a drive in my raid array that may fail, but I'm curious if I can hot swap this drive? I've done it before on other servers, but never with SAS drives, only with SCSI.

Is there any way to tell if the raid array will be fine if I pull this drive for replacement?
0
Comment
Question by:troycsl
  • 2
  • 2
  • 2
6 Comments
 
LVL 32

Expert Comment

by:PowerEdgeTech
ID: 39901047
SAS and SATA support hot-swap.  However, on LSI/Dell controllers, you should force the pred fail drive OFFLINE before removing it.  Once you force it offline, you should replace it "hot".  If pred fail drives are not actually offline when you remove them, it can cause the controller to flag the new drive with the same pred fail flag, which will then require a rescan (reboot) to clear it and show the drive as healthy.  The drive can be forced offline from the OS using OpenManage Server Administrator (OMSA).  If the new drive does not begin rebuilding automatically, then assign it as a hot-spare in OMSA.
0
 
LVL 36

Expert Comment

by:Mahesh
ID: 39901053
If you could tell us what kind of raid array do you have then only it is possible

if it is Raid - 1 with TWO disks, you can hot swap

If its Raid - 5 with 3 or multiple disks, you can hot swap

if its RAID 1+0, you can hot swap

before pulling it you should log a call with Dell if your server is in warranty \ support agreement and let Dell engineer visit \ connect remotely to server at your place and let allow him to analyse 1st
Then you can order replacement part and once that arrived, you can replace faulty one with new one
System will start rebuild automatically

Mahesh
0
 

Author Comment

by:troycsl
ID: 39901142
It is a Raid 5 array with 3 disks. Obviously the server is telling me I'm risking data loss, but a Raid 5 array with 3 disks should be safe to bring one offline, no?
0
Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

 
LVL 36

Expert Comment

by:Mahesh
ID: 39901218
Yes, sure you can remove one which is faulted without any problem
0
 
LVL 32

Accepted Solution

by:
PowerEdgeTech earned 500 total points
ID: 39901399
Yes, a RAID 5 has a single-disk fault tolerance, so one disk failed/offline is fine, but your data is at risk while the disk is offline, so it is best to replace it as soon as possible.
0
 

Author Comment

by:troycsl
ID: 39906330
Decided to wait for a low volume time on the server, chose this morning, and came in to the disk being officially "failed"! Currently 95% done rebuilding!

Thanks guys!
0

Featured Post

Easy, flexible multimedia distribution & control

Coming soon!  Ideal for large-scale A/V applications, ATEN's VM3200 Modular Matrix Switch is an all-in-one solution that simplifies video wall integration. Easily customize display layouts to see what you want, how you want it in 4k.

Question has a verified solution.

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

Create your own, high-performance VM backup appliance by installing NAKIVO Backup & Replication directly onto a Synology NAS!
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.
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…
This Micro Tutorial will teach you how to reformat your flash drive. Sometimes your flash drive may have issues carrying files so this will completely restore it to manufacturing settings. Make sure to backup all files before reformatting. This w…

792 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