Solved

Logical Drive not on preferred path due to ADT/RDAC failover

Posted on 2014-02-03
4
2,676 Views
Last Modified: 2014-03-02
Background:
IBM Storage DS3512 and HyperV 2012 , two hosts in Cluster Failover
about 4 VM`s (Server 2012) on each host

host Operating system set to Windows clustered

Have done a Firmware upgrade no result.

get the Logical drive not on the preferred path , no changes or work in the server room , cables had been checked by onsite person , all looks ok , can change it manually to correct preferred path after a few minutes just fails , currently only two Volumes of about 8 total ones does that.

Not sure why :
Have engaged with IBM support too on this they are looking at the Logs now:

Any help on this please:
0
Comment
Question by:JakesC
  • 3
4 Comments
 
LVL 78

Expert Comment

by:David Johnson, CD, MVP
ID: 39832430
Are you using VMWARE ESXI?  Aopendix B may apply to you http://download.boulder.ibm.com/ibmdl/pub/systems/support/system_x_pdf/00y8830.pdf
0
 

Author Comment

by:JakesC
ID: 39833570
Hi Please note this is Mircrosoft Hyperv 2012
0
 

Accepted Solution

by:
JakesC earned 0 total points
ID: 39887387
Have solved this issue
Process followed  IBM SAN and HyperV 2012

1. Logged incident with IBM  

1.1.)look at the host configuration of the iSCSI initiators on the host and/or the configuration of the iSCSI switch. (the vlans may not be configured correctly)  This was correct

1.2)You should change you host type accordingly if you are not using Symantec Dynamic Multi-Pathing drivers for failover.
You currently have the host types defined as Type: Windows Server 2003/Server 2008 Clustered (supports DMP)
Windows normally uses MPIO drivers for failover (ie non DMP) (for details see you windows documentation and or speak to you related support person)
this was correct


2. Checked everythin related to  HYPERV on the Host
2.1. discovered the Storage adapter on one of the hosts dissapeared from the device manager and networking managemenent

Was lucky > restarted host and Card showed up in windows again

Subsequently , Firmware and driver updates needs to be managed on the host....

Issue been cleared for a month now
0
 

Author Closing Comment

by:JakesC
ID: 39898347
Self discovery
0

Featured Post

Optimizing Cloud Backup for Low Bandwidth

With cloud storage prices going down a growing number of SMBs start to use it for backup storage. Unfortunately, business data volume rarely fits the average Internet speed. This article provides an overview of main Internet speed challenges and reveals backup best practices.

Question has a verified solution.

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

INTRODUCTION The purpose of this document is to demonstrate the Installation and configuration of the Data Protection Manager product. Note that this demonstration was prepared on the basis of Windows OS is 2008 R2 and DPM 2010. DATA PROTECTI…
In the modern office, employees tend to move around the workplace a lot more freely. Conferences, collaborative groups, flexible seating and working from home require a new level of mobility. Technology has not only changed the behavior and the expe…
In this video, we discuss why the need for additional vertical screen space has become more important in recent years, namely, due to the transition in the marketplace of 4x3 computer screens to 16x9 and 16x10 screens (so-called widescreen format). …
Windows 8 came with a dramatically different user interface known as Metro. Notably missing from that interface was a Start button and Start Menu. Microsoft responded to negative user feedback of the Metro interface, bringing back the Start button a…

896 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

Need Help in Real-Time?

Connect with top rated Experts

19 Experts available now in Live!

Get 1:1 Help Now