I was doing performance troubleshooting with Frank Denneman this week and we wanted to use “vscsiStats” to verify if there was any significant latency.
We checked multiple whitepapers before we went onsite and our primary source was this excellent article by Scott Drummonds. After start vscsiStats and receiving a “successful started” we waited for 15 minutes [...]
Posts Tagged ‘iscsi’
Multi Protocol Storage Provisioning with COMSTAR
January 24th, 2009
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I was just reading up on the enormous amount of articles I had waiting in Google Reader. I try to keep up to date as much as possible but sometimes there’s just not enough time. I just noticed an excellent article of Mike La Spina on COMSTAR. COMSTAR is part of OpenSolaris and on the [...]
Update your bookmarks
June 20th, 2008
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Update your bookmarks, EMC’s Chad Sakac recently started blogging and already wrote some cool article. Check out his blog and add it to your RSS reader and/or bookmarks.
A couple of outtakes:
I’ve been working with 10 joint VMware/EMC customers this week in NY, NJ and Houston (phew!), and was in Australia the week before last where [...]
Nice iSCSI EMC/VMware PDF online
February 4th, 2008
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VMware just uploaded a cool PDF about configuring an iSCSI SAN. This particular PDF is created by EMC and deals about an EMC Celerra iSCSI SAN but there’s more than enough useful info in there for those who don’t own an EMC iSCSI SAN.
The cool thing about the Celerra is the possibility to use “network [...]
New VCB features
January 15th, 2008
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When exploring VCB 1.1 I noticed some new features. One of the most prominent is the option to run VCB from within a VM. I can hear most of you think what’s the point of that and how about that HBA / iSCSI connection you need. Well if it’s of any use I will [...]
What about those Jumbo Frames?
January 3rd, 2008
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Support for Jumbo Frames is one of the major new features for ESX 3.5. Especially for the people who are using an iSCSI SAN configuring jumbo frames could be very beneficial. Instead of having an MTU(maximum size of transmitted packet) of 1500 an MTU of 9000 would be possible. That would cut out a lot [...]
Starting a VM after applying 15 November and up patches on 3.0.2
December 20th, 2007
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When patching ESX Hosts with iSCSI attached SAN’s it’s possible you encounter the following event when starting a VM:
“A general system error occured: The system returned an error. Communication with the virtual machine may have been interrupted.”
vSphere 4.0 Quick Start Guide