Comments for vPivot

Comment on VMware Thin Disks on EMC Virtual Provisioning by Rotem Agmon

Rotem Agmon — Thu, 02 Feb 2012 12:54:27 +0000

Hi Scott,

This paper has been made available for public viewing:

http://www.emc.com/collateral/hardware/solution-overview/h2529-vmware-esx-svr-w-symmetrix-wp-ldv.pdf

Comment on VMware Thin Disks on EMC Virtual Provisioning by Keith

Keith — Wed, 01 Feb 2012 21:16:17 +0000

Thanks Scott for the response; Great post on this topic!

Comment on SIOC Alarm FAQ by Fred Peterson

Fred Peterson — Thu, 26 Jan 2012 22:27:28 +0000

If you’re using pooled storage and you get this alarm, you aren’t providing enough headroom for the IOPS required from the virtual infrastructure.

More spindles!

Comment on SIOC Alarm FAQ by afidel

afidel — Wed, 18 Jan 2012 05:16:55 +0000

Well, if you are pooling your storage between VMWare and other workloads then SIOC isn’t doing you any good and that is what the alarm is letting you know. Basically VMWare setup SIOC so that it wouldn’t try to completely strangle your VM’s just so that a workload with an unknown priority can use up the freed capacity (where capacity is bandwidth or IOPS).

Comment on SIOC Alarm FAQ by Tomi Hakala

Tomi Hakala — Tue, 10 Jan 2012 10:53:29 +0000

This is very annoying alarm since majority of storage arrays today are “pooled” so it is not that unexpected that same disks would be utilized by non-VI workloads. This notification is simply just cluttering vSphere event logs and increasing size of vCenter database unnecessarily.

Comment on SIOC Event: Ignore or Panic? by SIOC Alarm FAQ « vPivot

SIOC Alarm FAQ « vPivot — Tue, 10 Jan 2012 09:51:31 +0000

[...] today’s post I want to update and amplify thoughts from an old post on Storage IO Control (SIOC). VMware customers that are using SIOC may sometimes see the following vCenter alarm: Non-VI [...]

Comment on Virtual Network Best Practices Aggregation by Ken Thacker

Ken Thacker — Sat, 24 Dec 2011 22:02:11 +0000

You probably have what you need already but I thought that VMware Networking blog would be a good source too. There’s a 6 part series on vDS that’s worth a look.

http://blogs.vmware.com/networking/2011/11/vds-best-practices-.html

Comment on The Value of SRM by SRM Survey Results « vPivot

SRM Survey Results « vPivot — Tue, 20 Dec 2011 07:17:39 +0000

[...] six weeks ago I announced a survey focused on measuring the value of VMware’s Site Recovery Manager to customers that deploy it. [...]

Comment on The Flash Storage Revolution: Part II by Ben

Ben — Sun, 04 Dec 2011 23:09:41 +0000

No, thank you. This kind of stuff makes my job easier, and my more tech-savy customers love it.

Cheers,

Ben

Comment on The Flash Storage Revolution: Part II by drummonds

drummonds — Tue, 29 Nov 2011 14:34:30 +0000

Ben, your understanding is correct. You caught an error in my article. I have updated the text, swapping “low skew” and “high skew” in the first section you quoted. The presentation I link is correct, of course. Check slide 17 where the presentation puts example numbers showing that low skew environments keep data hotter longer.

Excellent catch and thank you for bringing it to my attention.