Saturday, 26 October 2013

Research Links & Info - 27th October 2013

Just a place to put some links and notes collected in my inbox over the last 5 months… Been a busy few months so research emails have built up - now to find time to actually read them!
With sections: Citrix, Microsoft, NetApp, Veeam, VMware, Miscellaneous, MS 2012R2 TechEd Sessions, Microsoft Troubleshooting, NetApp Troubleshooting, VMware Troubleshooting, XXX

## Citrix ##

Faster NetApp storage replication with CloudBridge

Drumroll please…top 10 Synergy sessions…watch them today!

Eight Reasons To Run XenDesktop 7 on Hyper-V 2012

## Microsoft ##

Network Planning, Monitoring, and Troubleshooting with Lync Server

10 great new features in Windows Server 2012 R2 Hyper-V (+3 more)
- Gen2 VMs
- VM Direct Connect
- Extend replication to a third site
- Replica frequency options
- Compression for faster migration
- Online VM exporting and cloning
- Online VHDX resizing
- Storage QoS
- Dynamic Memory support for Linux
- Shared VHDX
+ Automated storage tiering
+ Running virtual machines off deduplicated volumes
+ Live Migration at the speed of RAM

Extending device support in Active Directory

## NetApp ##

What is Reallocation?

Is there any other way to disable console messages from popping up other than editing the /etc/syslog.conf file and hashing out the *.info /dev/console? NO

Being persistent: The true power of VDI

How to convert a Data ONTAP node from one operating Mode to the other

Disable 'Storage Failover' or 'Cluster Failover' and reboot the node to the LOADER prompt.

Perform the following steps to convert from Data ONTAP 7-Mode to Data ONTAP 8.1 (and later versions) Cluster-Mode
LOADER> set-defaults
LOADER> setenv bootarg.init.boot_clustered true
LOADER> setenv bootarg.bsdportname {node-mgmt_port_name}
LOADER> boot_ontap

Perform the following steps to convert from Data ONTAP Cluster-Mode to Data ONTAP 7-Mode
LOADER> set-defaults
LOADER> boot_ontap

Then at the Boot menu, select option 4 to perform a wipeconfig!

How to setup and configure the Cluster Network Switch

Tech OnTap Newsletter (August 2013)

+ What's New in Clustered Data ONTAP 8.2?

+ Is Software-Defined Storage in Your Future?

NetApp Global Support: Space: Cluster-Mode for the 7-Mode Administrator‏

How long does it approximately take for a RAID reconstruction?

Image: RAID Reconstruction Time Estimates

Netapp daily checks – available inodes/maxfiles

reallocate vs. extent vs. read_realloc

Optimizing NetApp Block IO Performance

## Veeam ##

Veeam Backup and VIX libraries: howto backup networkless VMs using VSS

Multiple Domain Controllers - How to Backup?

Turn PowerShell into GUI‏

Veeam B&R v5 recovery of a domain controller

NEW Veeam Backup & Replication v7


## VMware ##

Understanding VMware vSphere 5.1 Storage DRS

High Availability By Design with vCloud Hybrid Service

Physical or Appliance – Upgrading to vCenter Server 5.1

The FUD Strikes Back – Oracle Licensing on VMware


Network port diagram for vSphere 5.x (2054806)

New Book - vSphere Performance Reporting with PowerCLI: Automating vSphere Performance Reports (VMware Press Technology)

Faking an SSD in your virtualized vSphere lab

esxcli storage nmp satp rule add --satp VMW_SATP_LOCAL --device mpx.vmhba2:C0:T0:L0 --option "enable_local enable_ssd"
esxcli storage core claiming reclaim -d mpx.vmhba2:C0:T0:L0
esxcli storage core device list --device=mpx.vmhba2:C0:T0:L0

Emulating an SSD Virtual Disk in a VMware Environment

Enabling Virtual Disk Sharing!
“Disabling simultaneous write protection provided by VMFS using the multi-writer flag (1034165)”

Why is uploading files to VMFS so slow?

vSphere 5.5 top 3 new features in a nutshell:
- Up to 62TB virtual disks
- vSphere Application HA: application-aware High Availability that monitors and restarts applications running inside VM
- SSO 2.0: completely re-written and streamlined Single Sign-On engine
+ Lots of polish!

An opinion on vSphere Application HA:
Edited quote from Gostev@Veeam - “First, this feature is not something built into the platform, but rather completely "glued" on top of it. Before you can even start using this feature, you will need to deploy two separate appliances. The first appliance is Hyperic appliance which is Microsoft SCOM like tool with ugly web interface (carrying maybe 10% of SCOM functionality), and sporting identical architecture (thus bringing 100% of SCOM complexity along). Second appliance is actual VMware AppHA appliance, which orchestrates "stuff" between Hyperic server and vCenter Server. AppHA requires that you deploy special monitoring agents in every VM!”

What’s New in vSphere 5.5 Storage
+ Virtual SAN (VSAN)
+ vSphere Flash Read Cache
+ 62TB VMDKs and vRDMs
+ 16Gbit FC E2E Support
+ Microsoft Cluster Services Enhancements
+ PDL AutoRemove
+ VAAI UNMAP Improvements
+ VMFS Heap Improvements
+ Storage DRS, Storage vMotion & vSphere Replication Interop

vSphere 5.x support with NetApp MetroCluster (2031038)

Image: NetApp Stretch MetroCluster
Image: NetApp Fabric MetroCluster
vSphere 5.5 Jumbo VMDK Deep Dive

VMware Hands-On Lab (HOL)

Start your engines, time to download vSphere 5.5

Installing vCenter Server 5.5 best practices

Issues with authentication when running vSphere 5.5 with AD and SSO server on Windows Server 2012

Active Directory authentication fails when vCenter Single Sign-On 5.5 runs on Windows Server 2012 and the AD Domain Controller is also on Windows Server 2012 (2060901)

Upgrade from vSphere 5.1 to vSphere 5.5 rolls back after importing Lookup Service data (2060511)

## Miscellaneous ##

Tip For Tech Bloggers: Easy Way to Document Command History

$ history
$ history > history.txt

> doskey /history > history.txt
> doskey /history >> \history.txt
> doskey /?

Hunting down unnecessary I/O before you buy that next storage solution

Amazon Web Services: should you stay or should you go?

## Microsoft: Top picks among Windows Server 2012 R2 Storage and Hyper-V TechEd sessions ##

Introduction to Windows Server 2012 R2

Deploying Windows Server 2012 R2 File Services for Exceptional $/IOPS

Storage Spaces: What’s New in Windows Server 2012 R2

Storage and Availability Improvements in Windows Server 2012 R2

Continuous Availability: Deploying and Managing Clusters Using Windows Server 2012 R2

Hyper-V - What's New in Windows Server 2012 R2

Understanding the Hyper-V over SMB Scenario, Configurations, and End-to-End Performance

Reduce Storage Costs with Data Deduplication

Storage Management: Spanning the Enterprise to Low Cost Scalable Solutions

Windows Server 2012 Hyper-V Storage Performance

Upgrading the Platform - How to Get There! Part 4: Your Fileservers and Storage Options

Windows Server 2012 Failover Cluster Disaster Recovery: Everything You Need to Know to Prepare and Successfully Recover

What’s New in Microsoft System Center 2012 R2 - Virtual Machine Manager

Windows Server Storage for Non-Windows Clients (Including Apple OS X, Linux, and VMware)

## Microsoft Troubleshooting Issue 1 ##

Loss of consistency with IDE-attached virtual hard disks when a Hyper-V host server experiences an unplanned restart

Windows Server 2012
Install update rollup 2855336 on the Windows Server 2012-based Hyper-V host.

Windows Server 2008 R2
Install update 2853952 on the Windows Server 2008 R2-based Hyper-V host. Also, install update 2853952 on the guest if the guest is running Windows Server 2008 R2 or Windows 7.

## NetApp Troubleshooting Issue 1 ##

How to troubleshoot AutoSupport delivery when using SMTP

Clustered Data ONTAP:
clus::> event log show -messagename asup.smtp*
clus::> event log show -messagename*
clus::> network ping -node {node_name} -destination {remote_server}
clus::> network traceroute -node {node_name} -destination {remote_server}

Data ONTAP 7-Mode:
ntap> wrfile -a /etc/syslog.conf *.debug /etc/messages

clus::> system mode autosupport invoke -node {node name} -type test -message "Test ASUP"

ntap> options autosupport.doit “Test ASUP”

How to troubleshoot AutoSupport delivery when sent over HTTP or HTTPS

Clustered Data ONTAP:
clus::> vserver services dns show
clus::> network ping -node {node_name} -destination {remote_server_name}
clus::> network traceroute -node {node_name} -destination {remote_server_name}

Data ONTAP 7-Mode:

ntap> dns info
ntap> getXXbyYY gethostbyname_r {host_name}
ntap> ping {hostname}
ntap> traceroute -p port

## NetApp Troubleshooting Issue 2 ##

Reprotect operation might fail in SRM 5.x with the error 'SRA command 'discoverDevices' failed'

1. Verify that the snapmirror.conf file contains an entry for the SnapMirror relationship from the protected site to the recovery site.
2. Create an entry in the file if it is missing, even if you do not attach a schedule to the end.

## NetApp Troubleshooting Issue 3 ##

Troubleshooting Workflow: SnapMirror update -s failures

Issue A: A snapshot with the same name already exists at Destination
clus::> snap rename -vserver {vserver name} -volume {volume name} -snapshot {snapshot name}

Issue B: update -s fails to transfer the snapshot
clus::> snap rename -vserver {vserver name} -volume {volume name} -snapshot {snapshot name}
clus::> snapmirror policy modify-rule -vserver {vserver name} -policy {policy name} -snapmirror-label daily -preserve false

## NetApp Troubleshooting Issue 4 ##

7MTT – How to collect the 7MTT log files and data relevant to the tool to provide it for a support case

1. Log in as Admin to the Windows machine on which the 7MTT tool is installed
2. Navigate to the root directory where the 7MTT transition tool is installed (default: C:\Program Files\NetApp\7-Mode Transition Tool)
3. Compress the entire 'etc' and 'logs' directories

## VMware Troubleshooting Issue 1 ##

Virtual machine remote console screen takes up to a minute to display (2053692)

To turn off the automatic root certificates update:
- Click Start > Run, type gpedit.msc , and press enter
- In the left pane, navigate to Local Computer Policy > Computer Configuration
- In the right pane, double-click the Administrative Templates folder > System > Internet Communication Management > Internet Communication Settings
- Right-click Turn off Automatic Root Certificates Update and click Edit
- Select Enabled and click OK

## VMware Troubleshooting Issue 2 ##

SCSI cmd RESERVE failed on path … reservation state on device … is unknown
Failed to initialize VMFS3 distributed locking on volume … Timeout

ESXi 5.0 hosts fail to mount VMFS5 volumes that are formatted with ATS-only capabilities (2006858)

# esxcli system settings advanced set -i 0 -o /VMFS3/HardwareAcceleratedLocking

What happens when VMFS heap depletes completely?

Storage problems on SAN

Presenting CLARiiON CX500 and CX4-240 to same ESXi host

“… it looked as though one fo the ESXi servers had a lock on one of the VMFS volumes on the CX4-240 array, once all the ESXi hosts were restarted the lock was removed and the VMFS volume was mountable and visible …”

Upgrade to 5.1 HP Custom Image unable to mount P2000 SAS Vdisk

“… seems the issue did actually occur because the vaai plugin was installed and enabled... VAAI detected that the P2000 G3 did have Hardware locking support … however it did not seem to function correctly... Once we disabled VAAI, everything was fine …”

WARNING: NMP: nmp_DeviceRequestFastDeviceProbe

Resolving SCSI reservation conflicts (1002293)

# vmkfstools --lock lunreset /vmfs/devices/disks/vml…

READ THIS: Storage Performance and Timeout Issues

“… the storage team and EMC became involved and confirmed that the FA port was overloaded.”

## VMware Troubleshooting Issue 3 ##

Possible data corruption after a Windows 2012 virtual machine network transfer (2058692)

To work around this issue, perform one of these options:
- Disable TCP segmentation offload (TSO) in the source Windows 2012 guest operating system
- Use the vmxnet3 or e1000 network adapter as an alternative to the e1000e

## NetAppDocs (NetApp Internal) ##
*For 7-Mode and C-Mode

Communities search for netappdocs

USPS Scripts and Tools

NetAppDocs Release v2.2.0

NetAppDocsLite Release v2.2.0

Getting started with the NetAppDocs PowerShell Module (PPT)

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