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Saturday, August 31, 2013

DELL Force10 S6000 as a physical switch for VMware NSX

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Based on this  document http://www.vmware.com/files/pdf/products/nsx/vmw-nsx-dell-systems.pdf DELL Force10 S6000 is going to be fully int...
2 comments:
Tuesday, August 27, 2013

What’s New in vSphere 5.5

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On this article I'll try to collect all important (at least for me) vSphere 5.5 news and improvements announced at VMworld 2013. I wasn...
Sunday, August 25, 2013

DELL OpenManage Essentials (OME)

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OpenManage Essentials (OME) is a systems management console that provides simple, basic Dell hardware management and is available as a free...

Data Center Bridging

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DCB 4 key protocols:  Priority-based Flow Control (PFC): IEEE 802.1Qbb  Enhanced Transmission Selection (ETS): IEEE 802.1Qaz  Congestio...
Friday, August 23, 2013

DELL Force10 I/O Aggregator 40Gb Port Question

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Today I have received question how to inter connect DELL Force10 IOA 40Gb uplink with DELL Force10 S4810 top of rack switches. I assume t...
Tuesday, August 20, 2013

Best Practices for Faster vSphere SDK Scripts

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Reuben Stump published excellent blog post at http://www.virtuin.com/2012/11/best-practices-for-faster-vsphere-sdk.html about performance ...
Monday, August 19, 2013

DELL Blade Chassis power consumption analytics in vCenter Log Insight

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DELL Blade Chassis has a capability to send power consumption information via syslog messages. I have never understood  how to practically ...
Wednesday, August 14, 2013

ESXi Advanced Settings for NetApp NFS

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Here are NetApp  Net.TcpipHeapSize=30 Net.TcpipHeapMax=120 NFS.MaxVolumes=64 NFS.HeartbeatMaxFailures=10 NFS.HeartbeatFrequency=12 NF...
Sunday, August 11, 2013

Unified Network, DCB and iSCSI challenges

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iSCSI SAN is Storage Area Network. Storage need lost less fabric. If, for any reason, unified fabric need to be used then quality of ethern...
Tuesday, August 06, 2013

DELL EqualLogic general recommendations for VMware vSphere ESXi

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Bellow are eight major recommendations for DELL EqualLogic implementation with vSphere ESXi: Delayed ACK disabled LRO disabled I...
Monday, August 05, 2013

CISCO Nexus 1000v - Quality Of Service configuration

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class-map type queuing match-any n1kv_control_packet_mgmt_class  match protocol n1k_control  match protocol n1k_packet  match protocol n1k...
Wednesday, July 24, 2013

How to downgrade IBM V7000 (Storwize) firmware

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Sometimes, especially when you do a problem management, you have a need to downgrade firmwares on some system components. I have such need ...
2 comments:
Sunday, July 14, 2013

ESX host remote syslog configuration

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For remote CLI you can use vMA or vCLI. Here is the example how to configure ESX host (10.10.1.71) to send logs remotely to syslog server l...
Tuesday, July 09, 2013

Excellent article: "Anatomy of an Ethernet Frame"

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Trey Layton (aka EthernetStorageGuy) wrote excellent article about MTU sizes and Jumbo Frame settings. The article is here . In the article...

DELL Open Manage Essentials 1.2 has been released

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Dell OpenManage Essentials is a 'one to many' console used to monitor Dell Enterprise hardware. It can discover, inventory, and mon...
Tuesday, July 02, 2013

How to change default path selection policy for particular storage array?

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Sometimes the firmware in storage array has some problems and you have to "downgrade" functionality to achieve operable system. ...

Do you want to test Heavy Load? Try Heavy Load tool.

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Bring your PC to its limits with the freeware stress test tool HeavyLoad. HeavyLoad puts your workstation or server PC under a heavy load a...
Sunday, June 30, 2013

Simple UNIX Shell Script for generating disk IO trafic

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Here is pretty easy unix shell script for disk I/O generation. #!/bin/sh dd_threads="0 1 2 3 4 5 6 7 8 9" finish () {   kil...
Thursday, June 27, 2013

Calculating optimal segment size and stripe size for storage LUN backing vSphere VMFS Datastore

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Colleague of mine (BTW very good Storage Expert) asked me what is the best segment size for storage LUN used for VMware vSphere Datastore (...
Wednesday, June 26, 2013

IOBlazer

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IOBlazer  is a multi-platform storage stack micro-benchmark. IOBlazer runs on Linux, Windows and OSX and it is capable of generating a hig...
2 comments: