Posts Tagged ‘ESX’

Scale UP!

Lately I am having a lot of discussions with customers around sizing of their hosts. Especially Cisco UCS(with the 384GB option) and the upcoming Intel Xeon 5600 series with six cores per CPU takes the “Scale Up” discussion to a new level.
I guess we had this discussion in the past as well when 32GB became a commodity. [...]

VM powered on Alarm?

One of my readers(Thanks Andrzej!) emailed me something that I thought might be interesting for those who are closely monitoring their environment.
Did you know that there are two similar VM event triggers in Alarms in vCenter?

VM powered on
DRS – VM powered on

The first only works for VMs outside of DRS enabled clusters. The second only [...]

Single Initiator Zoning, recommended or not?

A question we receive a lot is what kind of zoning should be implemented for our storage solution? The answer is usually really short and simple: at least single initiator zoning.
Single initiator zoning is something we have always recommend in the field (VMware PSO Consultants/Architects) and something that is clearly mentioned in our documentation… at [...]

CPU/MEM Reservation Behavior

Again an interesting discussion we had amongst some colleagues (Thanks Frank, Andrew and Craig! Especially Craig as most text below comes from The Resource Master). The topic was CPU/Memory reservations and more specifically the difference in behavior of these two.
One would expect that both a CPU and Memory reservation would have the same behavior when [...]

Re: Memory Compression

I was just reading Scott Drummonds article on Memory Compression. Scott explains where Memory Compression comes in to play. I guess the part I want to reply on is the following:
VMware’s long-term prioritization for managing the most aggressively over-committed memory looks like this:

Do not swap if possible.  We will continue to leverage transparent page sharing [...]

VMware vCenter Update Manager 4.0 Update 1 Patch 1

VMware just released VMware vCenter Update Manager 4.0 Update 1 Patch 1.
This patch resolves the following issues :

After upgrading Cisco Nexus 1000V VSM to the latest version, you might not be able to patch the kernel of ESX hosts attached to the vDS (KB 1015717)Upgrading Cisco Nexus 1000V VSM to the latest version [...]

Custom shares on a Resource Pool, scripted

We’ve spoken about Resource Pools a couple of times over the last months and specifically about shares. (The Resource Pool Priority-Pie Paradox, Resource Pools and Shares.) The common question I received was how can we solve this. The solution is simple: Custom Shares.
However, the operational overhead associated with custom shares is something most people want [...]

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