Interesting tech stuff that was
filling my inbox. With
stuff from Cisco,
Citrix,
Cray,
Dell,
HP,
Microsoft,
NetApp,
pfSense,
ping.eu,
The
Register,
Veeam,
and VMware!
Cisco
Configuring VLAN Trunk Protocol (VTP) –
Document ID: 98154
http://www.cisco.com/en/US/tech/tk389/tk689/technologies_configuration_example09186a0080890607.shtml
“... VTP reduces administration in
a switched network. When you configure a new VLAN on one VTP server,
the VLAN is distributed through all switches in the domain ...”
Cisco
Spanning Tree from PVST+ to Rapid-PVST
Migration Configuration Example – Document ID: 72836
“... provides a sample
configuration to migrate the spanning tree mode from PVST+ to
rapid-PVST+ in the campus network ...”
Cisco
IPv6 - Frequently Asked Questions (FAQ)
Citrix
How to Implement Rate Limiting on a
NetScaler Appliance by Using the Responder Feature
“Rate Limiting on a NetScaler
appliance is a method to detect client connections and limit them by
the number of connections available or bandwidth.”
Citrix
Troubleshooting
XenDesktop brokering process
“... Most common problems
“1.) Firewall configuration …
“2.) DNS not properly configured …
“3.) Time synchronization not
properly configured …
“4.) Domain membership problems …
“5.) Multiple Network Adapters …
“6.) Service Principal Names
(SPNs) …
“7.) Proper DDC not found …
“8.) “Access this computer from
the network” rights …
“9.) Operation timing out ...”
Citrix
Black
Screen is displayed when Virtual Machines start.
“Black Screen is caused by ghosted
monitors listed in the Device Manager ...
Via RDP:
“Command Prompt:\> set
devmgr_show_nonpresent_devices=1
“Device Manager (devmgmt.msc)
remove all Ghosted Display Monitors.
“Restart.”
Citrix
Release:
Citrix XenClient Enterprise 4.1
Citrix
HDX
Monitor 2.0.7 Published
Citrix
CloudPlatform 3.0.4
Release Notes
Citrix
Load
Balancing TFTP with NetScaler
Citrix
3
redundancy mistakes in the Desktop Delivery Layer
“... best practice is to implement
a minimum of two controllers per
XenDesktop site, regardless of the size of the environment.
“... best practice is to implement
either SQL Clustering or SQL
Mirroring, in order to ensure automatic failover and
continuous service.
“... best practice is to perform a
full DB backup every day and
keep the backup for up to six
months by following the Grandfather-Father-Son Principle.”
Citrix
What’s
coming for Citrix Receiver
Cray
Cray
bags $21m Cascade super deal down under
Replacing “the 'Epic' system
already built by iVEC is an HP ProLiant blade cluster that has
9,600 cores across its 800 nodes, which are linked by QDR
InfiniBand switches. The machine is installed at Murdoch
University and went into production last June, and is rated at 87
teraflops.”
The Cray Cascade Supercomputer “will
be expanded to 1.2 petaflops
of raw floating-point performance (double precision), and will … be
based on a mix of Ivy Bridge and 'Haswell' Xeon processors as well as
Xeon Phi coprocessors.”
Dell
Dell
announces Host Integration Tools for Microsoft 4.5
Dell
Customer Stories
Matrix
IBS
“Company: Matrix IBS
“Industry: Hosting Solutions
“Employees: 20
“Services:
“Dell™ Support Services
“- Dell Compellent™ Copilot
Support
“- Dell ProSupport™ Next
Business Day onsite service
“Hardware:
“Dell Compellent Storage Center
SAN
“Dell PowerEdge™ R610 servers
with Intel® Xeon® processors
“Software:
“Dell Compellent Data Progression
“Dell Compellent Dynamic Capacity
“Dell Compellent Enterprise
Manager
“Dell Compellent Fast Track”
Dell
Customer Stories
C4L
“Company: C4L
“Industry: Hosting
“Employees: 56
“Services:
“Dell Solutions Centre
“Dell Support Services
“– Dell ProSupport™ with
Mission Critical
“Hardware:
“Dell™ PowerEdge™ M710HD blade
servers with Intel® Xeon® processors X5650
“Dell PowerEdge M1000e modular
blade enclosures
“Dell PowerEdge R410 servers with
Intel Xeon processors E5640
“Dell PowerEdge R610 servers with
Intel Xeon processors X5650
“Dell PowerEdge C6100 servers with
Intel Xeon processors L5640
“Dell EqualLogic
PS6510E/PS6000X/PS4000E storage arrays
“Dell PowerVault™ MD3000i
storage
“Software:
“VMware® vSphere™ 4
“Dell EqualLogic SAN HeadQuarters”
HP
HP
P2000 Remote Snap Technical Cookbook
Microsoft
VMware
vCenter vs. Microsoft SCVMM
Microsoft
StarWind
and Windows Server 2012 Scale-Out Servers
NetApp
PeakColo
Guarantees 100% SLA for the Cloud with Data ONTAP 8 Clustering
“The Solution: ... deployed a
combined 10 NetApp FAS3270 and FAS3240 storage systems in its 5
Type-II SSAE 16/SOC 1 data centers. NetApp Data ONTAP 8 operating in
Cluster-Mode provides the massive throughput and scalability needed
to rapidly grow ... NetApp Vserver helps PeakColo achieve maximum
flexibility of its shared storage infrastructure with secure
multi-tenancy ...
“Data ONTAP 8 operating in
Cluster-Mode is configured in pairs for high availability ... The
Data ONTAP operating system equips PeakColo with the flexibility to
add up to dozens of FAS controllers and storage as needed to scale to
multiple gigabytes per second of throughput and petabytes of capacity
... leverage both NFS and iSCSI investments. NetApp deduplication ...
reduce storage requirements by up to 73%, decreasing hardware, power,
and cooling costs.”
NetApp
Blue
Shift Blog – Category: Netapp
NetApp
Virtual
Machine Considerations For NetApp Storage
“By segregating the OS,
Application, page file (OS) and vSwap drives and then placing them
onto common volumes, we can maximize our ability to find common
blocks within a single volume, and thus maximize our disk savings.”
NetApp
How to
Create and Use Flash Pool?
“1. Create a 64-bit aggregate with
SATA drives.
“2. Set the aggregate option
hybrid_enabled to on.
“3. Add SSDs to the aggregate.”
Flash
Pool Read Policies
“read-cache = none
“read-cache = meta
“read-cache = random-read
“read-cache = random-read-write”
pfSense
Create
a stretched LAN between your site and vCloud using pfSense
Note: pfSense is an Open Source
Firewall Distribution
ping.eu
Port
check – Tests if port is opened on specified IP
The
Register
Watch
out Fibre Channel: 12 gig SAS has arrived
The
Register
OpenStack
cloud fluffer growing faster than Linux
The
Register
Microsoft
picks October 26 for Windows 8 launch
Veeam
NEW AND FREE: VEEAM EXPLORER FOR
MICROSOFT EXCHANGE
Exclusive Beta, Part of all Veeam
Backup & Replication Editions for VMware and Hyper-V
Veeam
Guide
To Setting Up A New Veeam Replication Job
VMware
Microsoft
Lync 2013 Support with VMware View Desktops!
“Customers
will be able to communicate and collaborate with the Lync 2013
client, using rich voice and video features, all from within the
VMware View desktop.”
VMware
vSphere
HA isolation response... which to use when?
“Isolation
of a slave
“T0
– Isolation of the host (slave)
“T10s
– Slave enters “election state”
“T25s
– Slave elects itself as master
“T25s
– Slave pings “isolation addresses”
“T30s
– Slave declares itself isolated and “triggers” isolation
response
“Isolation
of a master
“T0
– Isolation of the host (master)
“T0
– Master pings “isolation addresses”
“T5s
– Master declares itself isolated and “triggers” isolation
response”
VMware
ESXi
5 Unresponsive VM – How to Power Off (using ESXTOP)
#
esxtop
“c”
for CPU resource screen, “shift+V”
to display VMs only, “f”
to change display fields, “c”
in order to show the LWID (Leader World ID), “ENTER”,
press “k”
and enter the LWID number of the VM you want to stop.
VMware
VMware
Buys Nicira For $1.26B in Cash
From
http://nicira.com/en/network-virtualization-platform
: “... network
virtualization is simple … (it) decouples and isolates virtual
networks from the underlying network hardware ... the physical
network is used only for packet forwarding and treated as an IP
backplane. Virtual networks are then programmatically created and
operate completely decoupled from the underlying hardware ….”
VMware
Mission:
Find the perfect SAN for our datacenter
03-Apr-2011
“... Keep in mind that if it is Campus
Cluster there are
only 3 configs officially
certified for HA in a single cluster
as far as I know:
-
EMC
VPLEX
-
NetApp
Metro
-
Lefthand
...”
Has
this list changed since then???
VMware
Whitebox
Clouds – Building a VMware vCloud Lab, Part 1 of 3
“Software:
“Primary
Microsoft Active Directory (+add-ons)
“Secondary
Microsoft Active Directory (+add-ons)
“Microsoft
SQL Server 2008
“Windows
2008 R2 “golden image”
“RHEL
5.6 x64 “golden image”
“CentOS
x64 “golden image”
“VMware
Solutions:
“VMware
vSphere (ESXi) 5.x
“VMware
vCenter Server 5.x
“-
vSphere Web Client
“-
vSphere SSO Server
“VMware
vCloud Director 5.x (on RHEL 5.5 x64 VM)
“VMware
vCloud Connector 5.x
“VMware
vShield Edge 5.x
“VMware
vFabric App Director 1.0
“VMware
vCenter Orchestrator 5.x
“VMware
View 5.1
“-
View Manager
“-
View Security Server (opt.)
“-
View Composer
“VMware
vCenter Operations Manager 5.6 beta
“-
UI VM
“-
Analytics VM
“VMware
vCenter Chargeback 2.0
“VMware
vCenter Infrastructure Navigator (VIN) 1.2 beta
“VMware
Zimbra 8.0 beta”
VMware
All
about the UNMAP command in vSphere
“Due
to varied UNMAP command completion response times from the storage
devices, the UNMAP operation can result in poor performance of the
system which is why VMware is recommending that it be disabled on
ESXi 5.0 hosts.”
“How
can UNMAP be disabled?
“either
# esxcli system
settings advanced set –int-value 0 –option
/VMFS3/EnableBlockDelete
“or
# esxcfg-advcfg -s
1 /VMFS3/EnableBlockDelete
“...
must be run individually on each ESXi host to disable UNMAP support.
“ to
check # esxcfg-advcfg
-g /VMFS3/EnableBlockDelete”
VMware
ESXi
host connected to multiple storage array - is it supported?
Yes
“... Some caution must be shown however.
“1.
… SATP …
“2.
… queue depth …
“3.
… recommendation … single-initiator-single-target zoning ...”
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