Updated: Storage disconnects when using VAAI ATS on vSphere 5.5 Update2 and vSphere 6.0

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IBM has released a flash alert regarding a new behavior introduced in vSphere 5.5 Update2 and vSphere 6.0 where VAAI ATS (Atomic Test and Set or in the other words Hardware accelerated locking) is used for heartbeat I/O. http://www-01.ibm.com/support/docview.wss?uid=ssg1S1005201 According to IBM: Due to the low timeout value for heartbeat… Continue reading

Network Design Rack Server x3850 X5 with fourteen 1 GbE Network Adapters

Network Design Rack Server x3850 X5 with fourteen 1 GbE Network Adapters Welcome, I want to share with you one of my older network design with 1 GbE network adapters. In this example we will speak about IBM System x3850 X5, 4x Xeon 10C E7-8860, 8x Memory Expansion Cards, RAM 64x16GB… Continue reading

VM Resource and Availability Service Fling

VMware recently introduced  a new VM Resource and Availability Service fling, which helps you to identify the available resources in case of one or more ESXi hosts fail. The output will show how many VMs will be safely restarted, how many of them will be experiencing performance issue and how… Continue reading

vRealize Operations Manager for View – What’s in the Box

vRealize Operations Manager for View is a ‘must have’ in every View based VDI environment. Its capabilities for capacity and performance monitoring are priceless. Any kind of troubleshooting is much more easy when you have a tool like this deployed in your environment. Following my previous articles for Installing/Configuring and View… Continue reading

vSphere 6.0 whats new – Updated

Update 1.4.2015 : added vSphere Data Protection, updated vSphere Replication, corrected host max VMs, added VVOL details vSphere 6.0 is out since 2nd of February 2015 lets see whats new: 1. Compute Features the new virtual hardware ‘version 11’ 128 vCPUs (64 vCPU with 5.5) 4TB of RAM (NUMA aware) (1TB… Continue reading

vMotion fails at 9 % on ESXi 5.0U3 running on IBM x3850 M2

ibm-logo

I would like to share an experience with vMotion problem, which I’ve met a while ago during upgrade of few hosts from ESXi 4.1 to ESXi5.0. Environment: IBM x3850 M2 /x3950 M2 -[72334RG]- with Integrated Dual-port Broadcom 5709C PCI Express Gigabit Ethernet controller,  2 dual-port ISP2432-based 4Gb Fibre Channel to PCI Express… Continue reading