The storage processor in the targeted storage system have inconsistent settings.

Dear Folks

When you are initializing a VNX storage   via Storage Initialization Tool  you may face the below error whereas you will not be able to set an IP addresses for the storage processors.

error error_1

In order to solve this you must connect SPA and SPB management ports to the Ethernet Switch   and  begin the initialization process.

If the above step did not solve your issue ,there was another recommendation from the EMC forums advising that to use a CAT 6 cable and make the NIC setting for duplex as AUTO.

Good Luck.

December 29, 2013 at 8:14 am Leave a comment

Cannot retreive metalink for repository epel

Hi

If some body receive the above error first you should check the connectivity and firewall issues and still if the problem persist.

Sample Error

metalink_error_1You should edit the  /etc/yum/repos.d/CentOS-base.repo or epel.repo

and change all the URL’s that pointing to https  to  http  save the file

Restart the yum process.

Hint –  Always start the yum process with debug switch ,which helps us in troubleshooting –  ( yum -d6 update)

 

 

 

December 17, 2013 at 9:02 am Leave a comment

CentOS yum error 14: PCYURL ERROR 7 – “Failed to connect to 2a02:2498:1:3d:5054:ff:fed3:e9

Dear Folks

When you are trying to update the system with yum , you may come with the above error , In which the yum tool is trying to resolve the mirrorlist url’s via IPv6 Address.

update_error_1What happens here is that when the yum is unable to resolve and reach the IPv4 address it end up trying the IPv6.

Hence if you face the similar issue , I would advice you to go through the below steps and identify the real cause.

Step 1 –  Check whether you could resolve the URL  (mirrorlist.centos.org) via nslookup or dig and get an IPV6 address.

If  you fail at the above step check for the DNS configurations in /etc/resolv.conf

Step 2 –   Check with the firewall team that they have allowed the ports 80 , 443 ,21   from the linux server.

In my case it was the firewall blockage.

I have been googling  regarding the same issue and found out that several articles pointing to IPV6   saying that to disable it. Hence you could try that as a  last resort , if the above steps did not succeed.

– edit  the  /etc/sysconfig/network and the /etc/sysconfig/network-scripts/ifcfg-eth* files  to  disable any entries pointing to IPv6

– edit /etc/sysctl.conf and put the below entries and reboot the server

net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 =

– disable the ip6tables.

Good Luck

December 17, 2013 at 8:50 am Leave a comment

How to move the database and transaction log files on Exchange 2010 DAG servers

Hi Folks

In case if you want move the transaction logs and the exchange database to a new location on the disk , you have to follow certain guidelines to avoid exchange nightmare.

But I would like to recommend you do this before you establish the DAG ,

In-case if you have forgotten to do this before establishing the DAG you should do the below steps on the exchange servers that are part of the DAG in the mentioned order

– Disable the Circular logging ( In-case if it was enabled before)

– Then you need to remove the database copies  on each database per each each server

Remove-MailboxDatabaseCopy -Identity DB1\MBX1 -Confirm:$False (This Eg:- will remove the copy of the database DB1 on the MBX1 server)

– Create the necessary folder on the new location

– Move the Mailbox databases as below

* Open Exchange Management Console

* Navigate to Organization Configuration -> Mailbox -> Database Management -> Select the Mailbox Database

* Right click on it select “Move Database Path” and enter the new locations

– On each DAG member server you will find the passive copy of the database for the other member servers,normally stored on the original location where the Active Mailbox is

stored ,You need to move these files to the new location , Keep in mind when you are moving the Passive Copies of the database it should be stored on the same drive letter where

the Active Mailbox database is stored on the active member.

Eg:- Server1 host the mailbox DB1 on C:\DB Folder , hence you need to maintain the same drive letter on the remote server(Server2) where it will host the passive copy for the DB1

Do the same on all the DAG members

– Now add the Mailbox database copies for all the servers.

Add-MailboxDatabaseCopy -Identity DB1 -MailboxServer Server2 -ActivationPreference 2

– On each server where the mailbox was moved run the below commands Net stop msftesql-Exchange Net start MSExchangeSearch

Tip:- I came across an issue where when I changed the drive letter on the server where it holds the mailbox , the database dismounted,therefore if you face the same issue use the

Move-Database command with the -ConfigurationOnly Parameter.

November 19, 2013 at 10:10 am Leave a comment

How to identify the Exchange server Service Pack Levels

Hi

Use the below table to identify the Exchange Server versions and their service pack level.

Source :- Technet

Product name Build number Date
 Microsoft Exchange Server 2003  6.5.6944233 3
 Microsoft Exchange Server 2003 SP1  6.5.7226  5/25/2004
 Microsoft Exchange Server 2003 SP2  6.5.7638  10/19/2005
 Microsoft Exchange Server 2007  8.0.685.24  12/9/2006
 Microsoft Exchange Server 2007  8.0.685.25  12/9/2006
 Microsoft Exchange Server 2007 SP1  8.1.240.6  11/29/2007
 Microsoft Exchange Server 2007 SP2  8.2.176.2  8/24/2009
 Microsoft Exchange Server 2007 SP3  8.3.083.6  6/20/2010
 Microsoft Exchange Server 2010  14.0.639.21  11/9/2009
 Microsoft Exchange Server 2010 SP1  14.1.218.15  8/24/2010
 Microsoft Exchange Server 2010 SP2  14.2.247.5  12/4/2011
 Microsoft Exchange Server 2010 SP3  14.3.123.4  2/12/2013
 Microsoft Exchange Server 2013  15.0.516.32  10/11/2012

Exchange Server 2007 Service Pack1

Product name Build number Date KB
 Microsoft Exchange Server Exchange 2007 SP1  8.1.240.6  11/29/2007
 Update Rollup 1 for Exchange Server 2007 Service Pack 1  8.1.263.1  2/28/2008
 KB945684 
 Update Rollup 2 for Exchange Server 2007 Service Pack 1  8.1.278.2  5/8/2008
 KB948016 
 Update Rollup 3 for Exchange Server 2007 Service Pack 1  8.1.291.2  7/8/2008
 KB949870 
 Update Rollup 4 for Exchange Server 2007 Service Pack 1  8.1.311.3  10/7/2008
 KB952580 
 Update Rollup 5 for Exchange Server 2007 Service Pack 1  8.1.336.1  11/20/2008
 KB953467
 Update Rollup 6 for Exchange Server 2007 Service Pack 1  8.1.340.1  2/10/2009
 KB959241 
 Update Rollup 7 for Exchange Server 2007 Service Pack 1  8.1.359.2  3/18/2009
 KB960384 
 Update Rollup 8 for Exchange Server 2007 Service Pack 1  8.1.375.2  5/19/2009
 KB968012 
 Update Rollup 9 for Exchange Server 2007 Service Pack 1  8.1.393.1  7/17/2009
 KB970162 
 Update Rollup 10 for Exchange Server 2007 Service Pack 1  8.1.436.0  4/9/2010
 KB981407 

Exchange Server Service Pack 2

Product name Build number Date KB
 Microsoft Exchange Server 2007 SP2  8.2.176.2  8/24/2009
 Update Rollup 1 for Exchange Server 2007 Service Pack 2  8.2.217.3  11/19/2009
 KB971534 
 Update Rollup 2 for Exchange Server 2007 Service Pack 2  8.2.234.1  1/22/2010
 KB972076 
 Update Rollup 3 for Exchange Server 2007 Service Pack 2  8.2.247.2  3/17/2010
 KB979784 
 Update Rollup 4 for Exchange Server 2007 Service Pack 2  8.2.254.0  4/9/2010
 KB981383 
 Update Rollup 5 for Exchange Server 2007 Service Pack 2  8.2.305.3  12/7/2010
 KB2407132 

Exchange Server Service Pack 3

Product name Build number Date KB
 Microsoft Exchange Server 2007 SP3  8.3.083.6  6/20/2010
 Update Rollup 1 for Exchange Server 2007 Service Pack 3  8.3.106.2  9/9/2010
 KB2279665 
 Update Rollup 2 for Exchange Server 2007 Service Pack 3  8.3.137.3  12/10/2010
 KB2407025 
 Update Rollup 3 for Exchange Server 2007 Service Pack 3  8.3.159.0  3/2/2011
 KB2492691 
 Update Rollup 3-v2 for Exchange Server 2007 Service Pack 3  8.3.159.2  3/30/2011
 KB2530488 
 Update Rollup 4 for Exchange Server 2007 Service Pack 3  8.3.192.1  7/7/2011
 KB2509911 
 Update Rollup 5 for Exchange Server 2007 Service Pack 3  8.3.213.1  9/21/2011
 KB2602324 
 Update Rollup 6 for Exchange Server 2007 Service Pack 3  8.3.245.2  1/25/2012
 KB2608656 
 Update Rollup 7 for Exchange Server 2007 Service Pack 3  8.3.264.0  4/16/2012
 KB2655203 
 Update Rollup 8 for Exchange Server 2007 Service Pack 3  8.3.279.3  8/13/2012
 KB2734232 
 Update Rollup 8-v2 for Exchange Server 2007 Service Pack 3  8.3.279.5  10/9/2012
 KB2756497 
 Update Rollup 8-v3 for Exchange Server 2007 Service Pack 3  8.3.279.6  11/13/2012
 KB2778154 
 Update Rollup 9 for Exchange Server 2007 Service Pack 3  8.3.297.2  12/10/2012
 KB2746157 
 Update Rollup 10 for Exchange Server 2007 Service Pack 3  8.3.298.3  2/11/2013
 KB2788321 
 Update Rollup 11 for Exchange Server 2007 Service Pack 3  8.3.327.1  8/13/2013
KB28737461 

Exchange Server 2010

Product name Build number Date KB
 Microsoft Exchange Server 2010 RTM  14.0.639.21  11/9/2009
 Update Rollup 1 for Exchange Server 2010  14.0.682.1  12/9/2009
 KB976573 
 Update Rollup 2 for Exchange Server 2010  14.0.689.0  3/4/2010
 KB979611 
 Update Rollup 3 for Exchange Server 2010  14.0.694.0  4/9/2010
 KB981401 
 Update Rollup 4 for Exchange Server 2010  14.0.702.1  6/17/2010
 KB982639 
 Update Rollup 5 for Exchange Server 2010  14.0.726.0  12/13/2010
 KB2407113 

Exchange Server 2010 Service Pack 1

Product name Build number Date KB
 Microsoft Exchange Server 2010 SP1  14.1.218.15  8/24/2010
 Update Rollup 1 for Exchange Server 2010 SP1  14.1.255.2  10/4/2010
 KB2407028 
 Update Rollup 2 for Exchange Server 2010 SP1  14.1.270.1  12/9/2010
 KB2425179 
 14.1.289.3  3/7/2011
 KB2492690 
 Update Rollup 3 for Exchange Server 2010 SP1
 Update Rollup 3-v3 for Exchange Server 2010 SP1  14.1.289.7  4/1/2011
 KB2529939 
 Update Rollup 4 for Exchange Server 2010 SP1  14.1.323.1  6/22/2011
 KB2509910 
 Update Rollup 4-v2 for Exchange Server 2010 SP1  14.1.323.6  7/27/2011
 KB2579150 
 Update Rollup 5 for Exchange Server 2010 SP1  14.1.339.1  8/23/2011
 KB2582113 
 Update Rollup 6 for Exchange Server 2010 SP1  14.1.355.2  10/27/2011
 KB2608646 
 Update Rollup 7 for Exchange Server 2010 SP1  14.1.421.0  8/13/2012
 KB2743248 
 Update Rollup 7-v2 for Exchange Server 2010 SP1  14.1.421.2  10/9/2012
 KB2756496 
 Update Rollup 7-v3 for Exchange Server 2010 SP1  14.1.421.3  11/12/2012
 KB2778158 
 Update Rollup 8 for Exchange Server 2010 SP1  14.1.438.0  12/10/2012
 KB2787763 

Exchange Server Service Pack 2

Product name Build number Date KB
 Microsoft Exchange Server 2010 SP2  14.2.247.5  12/4/2011
 Update Rollup 1 for Exchange Server 2010 SP2  14.2.283.3  2/13/2012
 KB2645995 
 Update Rollup 2 for Exchange Server 2010 SP2  14.2.298.4  4/16/2012
 KB2661854 
 Update Rollup 3 for Exchange Server 2010 SP2  14.2.309.2  5/29/2012
 KB2685289 
 Update Rollup 4 for Exchange Server 2010 SP2  14.2.318.2   8/13/2012
 KB2706690 
 Update Rollup 4-v2 for Exchange Server 2010 SP2  14.2.318.4  10/9/2012
 KB2756485 
 Update Rollup 5 for Exchange Server 2010 SP2  14.2.328.5  11/13/2012  KB2719800
 Update Rollup 5-v2 for Exchange Server 2010 SP2  14.2.328.10  12/10/2012
 KB2785908 
 Update Rollup 6 for Exchange Server 2010 SP2  14.2.342.3  2/11/2013
 KB2746164 
 Update Rollup 7 for Exchange Server 2010 SP2  14.2.375.0  8/13/2013
 KB2874216 

Exchange Server 2010 Service Pack 3

Product name Build number Date KB
 Microsoft Exchange Server 2010 SP3  14.3.123.4  2/12/2013
 KB2808208 
 Update Rollup 1 for Exchange Server 2010 SP3  14.3.146.0  5/29/2013
 KB2803727 
 Update Rollup 2 for Exchange Server 2010 SP3  14.3.158.1  8/13/2013
 KB2866475 

Exchange Server 2013

Product name Build number Date KB
 Microsoft Exchange Server 2013 Preview  15.0.466.13  7/16/2012
 Microsoft Exchange Server 2013 RTM  15.0.516.32  10/11/2012
 Exchange Server 2013 Cumulative Update 1 (CU1)  15.0.620.29  4/2/2013
 KB2816900 
 Exchange Server 2013 Cumulative Update 2 (CU2)  15.0.712.22  7/9/2013  KB2859928
 Exchange Server 2013 Cumulative Update 2 (CU2-v2)  15.0.712.24  7/29/2013
 KB2859928 
 Exchange Server 2013 Cumulative Update 3

November 13, 2013 at 8:50 am Leave a comment

How to delete the Exchange Server transaction logs

Dear Folks

When your are performing a backup which is not Exchange Aware or for some reason the job fails , you will fall in to situation where the exchange transaction logs will not be cleared automatically and end up in eating your disk space.

I have listed the steps where you could identify the logs that have been committed already and delete them manually.

– Open Powershell
– Browse it to the exchange installation directory (x:\Program Files\Microsoft\Exchange Server\V14\bin\)
– Then run the command “eseutil /mk “C:\MDBDATA\MDB01\E00.chk”
Output of the above command will be similar to – Checkpoint: (0x4B1D,FFFF,FFFF)
– Remember the value “0x4B1D”
Go to the Exchange Transactions log folder and arrange the files on the “Modified Time”

– Then look in to the folder for the file with the value “0x4B1D” and delete the files above them.

NOTE:- Since the log files are deleted immediately you must take a full backup for the safety of the exchange environment.

November 13, 2013 at 8:12 am Leave a comment

How to Disable IPV6 on Windows

Dear Folks

Some of us will encounter the below error message on a DNS server installed on Windows 2008 / 2012

nsllokup

 

 

But this is not a real problem ,and there will be no technical glitches based on this also Microsoft do not recommend disabling the IPV6 on Windows and Exchange servers.

Still if you want to hide this error you could do either of the below option

Option 1

1.identify the name of the LAN connection using ipconfig(in my LAB the name of the connection is “Local Area Connection”

2. netsh interface ipv6 delete dnsserver “Local Area Connection” ::1

Option2

1.netsh interface ipv6 show interfaces

2.netsh interface ipv6 delete dnsserver name=”IDX#” address=::1

NOTE:- Keep reading on IPV6 and Microsoft guidelines and discussion since these are getting updated frequently

Good Luck..

May 15, 2013 at 10:47 am Leave a comment

Active Directory Domain Servers could not transfer the remainig data in directory partiiton

Hi

Recently I faced an issue with one of our clients where he was unable to  run the DCPromo to demote the server , he was getting the below error.

The server operating system was Windows 2008 R2.

01-Floating single-master operation roles

After some research I found out that the reason is that the fsMORoleOwner  attribute was pointing to an incorrect entry ,it may contain an entry such as “0ADEL:123456f8-1238-1233-1230-123456361b8b”  But the actual FSMO role owner is   dc1.test.local.

I was trying to change the attribute via ADSI Edit  on the server which I need to demote  , But again I was faced with the below error.

dc

So  if anybody faces a similar incident  , they should do the below steps. by log in to the current domain controller which was holding the schema master role

* Identify the current FSMO Role Owner by

netdom /query fsmo

1 Login to the current owner  ,  and open the ADSI Edit

2 Connect to the DC=ForestDnsZones,DC=test,DC=lab

3 Right click on  CN=Infrastructure  go to Properties

4 On CN=Infrastructure Properties   click on fsMORoleOwner attribute and click on edit  you will find an incorrect entry  as below fsmo_Wrong_entry

5 Clear the text and enter the below text.

CN=NTDS Settings,CN=dc,CN=Servers,CN=HeadOffice,CN=Sites,CN=Configuration,DC=test,DC=local.

After the above steps   repeat the step2  to connect it to the  DC=DomainDnsZones,DC=test,DC=lab and repeat the steps 3,4 & 5

 

Voila Press OK and close the ADSI Edit  and now login to  the server where you want  to demote and run the DCPromo command and now you will be able to complete the wizard without any error

“I would like to thank “Antonie Khater” for his blog entry which was really helping me to focus in to the right direction”

 

 

 

 

 

 

May 6, 2013 at 9:14 am 1 comment

Error code: 0x800F0906 while installing Microsoft .NET Framework 3.5

Hi Friends

 

Those who try to install .NET Framework through “Windows Feature” on Windows 8 or 2012 may receive the above mentioned error.

The quickest workaround for this issue ,

– Insert the Windows 8 or Windows 2012 Media

– Type the below command on the elevated Command Prompt.

Dism /online /enable-feature /featurename:NetFx3 /All /Source:<drive>:\sources\sxs /LimitAccess ( Replace the <drive> with your DVD Drive letter

 

Source:TechNet

Good Luck…

April 10, 2013 at 1:50 pm Leave a comment

How to reinstall the failed Additional Domain Controller on Windows 2012

Hi Folks

Recently I faced an issue with a customer where we have installed a Windows 2012 Additional Domain Controller as a Virtual Machine  on Hyper-v Server , he was getting the below error.

error

So  I was trying with all the CHKDSK , Last Known Good Configuration , Directory Restore mode  BUT everything failed, Including the below suggestion on Technet forums

http://social.technet.microsoft.com/Forums/en-US/winserverhyperv/thread/22e97f03-7308-43bd-9fa7-3d3560bf67bf/

Since  I had to meet the SLA  on solving the ticket , I decided to re-install the Additional Domain Controller on the same name ,which will avoid me of  Cleaning the metadata and other complex task.

So I  performed the follow steps.

  • Re-installed the Windows 2012  Guest on Hyper-V
  • Change the name to my previous Additional Domain Controller name.
  • Open the Powershell
  1. Add-WindowsFeature AD-Domain-Services –> This will install the Active Directory Domain Services.
  2. Import-Module ADDSDeployment
  3. Install-ADDSDomainController  -AllowDomainControllerReinstall -Credential (Get-Credential) -DomainName “test.local”This will prompt you  to enter the credential , make sure you enter the credential either in  DOMAINNAME\Administrator OR Administrator@DOMAINNAME
    Secondly it will prompt you to enter the Directory Restore Password
  4. That’s all it will promote the new server as a domain controller , you do not need to do anything on DNS or other related services.
  5. Finally you  will need to install the ADDS Management Tools  to Manage the Active Directory components you could do it via PowershellImport-Module ServerManager
    Add-WindowsFeature RSAT-AD-PowerShell,RSAT-AD-Tools and hit enter

              OR via the GUI

addfeature

Voila… My problem was solved .  Good luck Guys….

April 1, 2013 at 9:15 am 2 comments

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