Browsing Posts published by Andrea Mauro

VMware Logo

After an upgrade to VMware vSphere 5.5 on a Dell PowerEdge R710, I’ve got strange occasion issues, where the hosts got completly disconnected from vCenter (with the ESXi/ESX host’s status as Not Responding or Disconnected in vCenter Server) and there was no way to reconnect, also after restarting the management services.

Locking in the ESXi console those kind of errors where notable: Bootbank cannot be found at path ‘/bootbank’.

The only temporally solution was power-off the VMs and restart the host. But the issue can randomly came back.

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VMware Logo

In previous posts (see ESXi – Partitions layout of system disk and ESXi – More on partitions) I’ve described how are handles the partitions table on the destination installation media of ESXi 5.x (both in the case of a hard disk or a SD/USB disk).

With the new ESXi 6.0 the partition tables is similar in the case of a 1 or 2 GB destination device (like a previous SD media), but has some changes in the case of larger devices.

Core partitions remain the same with standard size: continue reading…


Some days ago I was invited to as a delegate at the first edition of Data Field Day (#DFD1) event, scheduled in May 13–15, 2015 in California (Silicon Valley and San Francisco).

Data Field Day event purpose was to cover different topics from others Technical Field Day events: from big data to analytics to hyperscale architecture and cloud security, and all waves of innovations that are transforming the IT. A new format for some growing trends, including micro-services, mobile and the Internet-connected world.

But if you have seens some of the presentation video you may have some doubts if it was more a data (at high level) related event or a storage event (for some aspects it was also a Storage Field Day extra #SFDx).

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VMware EVO:RAIL represent the first Hyper-Converged Infrastructure offerings from VMware, announced in VMworld 2014 and available from the second half of 2014, and based (on the software part) on vSphere 5.5 and VSAN 1.0.

Now there is a new software release of VMware EVO:RAIL which includes also support for the VMware EVO:RAIL vSphere Loyalty Program.

One of the most notable improvements is that the scale of the hyper-converged infrastructure appliances are now doubled: from beyond the initial four appliances in a cluster and 16 nodes overall to eight appliances in a cluster and 32 nodes overall. Appliances running the updated EVO:RAIL software will now support approximately 800 general purpose virtual machines or 2,000 virtual desktop virtual machines per cluster.

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VMware Logo

Due to the changes in the new vCenter Server 6.0 architecture, the SSO has now been incorporated in the new VMware Platform Services Controller “role”.

But the concepts of a global SSO accounts still exist and remain important to manage the infrastructure (and more important during installation and upgrade). If you forget the SSO admin password you can have some trouble. I’ve already wrote on how reset the VMware SSO password in the vSphere 5.1 and 5.5 versions and the procedure remain almost the same also in the 6.0 version.

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VMware Logo

In previous post we have already see how add custom drivers to an ESXi installation ISO and how use ImageBuilder to make custom ESXi ISO, but in other cases you may need to define some custom settings during the installation or add custom vib files.

Booting from CD is not the only way, but custom ISO could be used also for boot from USB or for boot from virtual devices (like the iDRAC or ILOE).

In case you need to build custom ISO with custom option this post could help you: How to Create Bootable ESXi 5 ISO & Specifying Kernel Boot Options. If you need to build an ISO with custom driver the fastest (but unsupported) way remain ESXi-Customizer. The supported way is ImageBuilder.

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Maxta Logo

Maxta, a storage company that provide hyper-converged solutions, announced MxInsight and MxCloudConnect, confirming a recent trend both in the analytics applied to the storage and also in the cloud based management solutions available as SaaS.

Other vendors (not only in the storage area, see for example Meraki in the network area with a real unique management solution) are moving in one or both of this directions. Of course those aspects are not related to the core technology (for Maxta the hyper-converged storage), but on the services that you can have in order to simplify the IT management.

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Compatibility remain one of major reason for wait before a major upgrade, but now several backup products are compatible with vSphere 6.0 (see Backup products and vSphere 6.0 compatibility – Updated). Same for several other 3rd part software.

But in the backup space there are still some issues that may limiting the choice of running (yet) vSphere 6.0 in production environments. As written in VMware vSphere 6.0 – Upgrade or not upgrade post one was related in CBT in ESXi 6.0 that can impact your environment also if your backup program will already support vSphere 6.0: for more information see KB 2114076 (Backing up a virtual machine with Change Block Tracking (CBT) enabled fails after upgrading to or installing VMware ESXi 6.0).

I said was because this morning I’ve read in the last Veeam Community Forums Digest that this issue has been fixed.

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As written in a previous post (VMware certification roadmap v6) there are already several v6 exams (and the VCP level is almost completed, although still with some beta exams for the DCV path). VCP level has also changed (Are you ready for new VMware’s certifications?) with a “foundations exam” common for all paths and then specific VCP exams.

The VCP6-DCV has different upgrade paths, but if you are already a VCP-DCV (not expired) the simple way is just took the VMware Certified Professional 6 – Data Center Virtualization Delta Beta Exam. Those beta exams (for the first time as public beta) run from 13 April 2015 and the period is much longer compared to previous beta… It’s not clear until when, but seems (according to the date that you can schedule on VUE site) that may be closed before the end of May 2015.

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As written in a previous post, the first edition of Data Field Day (#DFD1) event, scheduled in May 13–15, 2015 in California (Silicon Valley and San Francisco).

Data Field Day event will cover different topics compared to others Technical Field Day events: from big data to analytics to hyperscale architecture and cloud security, and all waves of innovations that are transforming the IT. A new format for some growing trends, including micro-services, mobile and the Internet-connected world.

An there will be an event inside the event: on Wednesday, May 13th, there will be an Ignite event with industry participants and expert delegates from Tech Field day for an evening of food, drinks, and engaging conversation about All Things Data! continue reading…

Nutanix Logo

If you know Nutanix, you probably know also the Nutanix Next Community that is the forum and information sharing area for Nutanix customers and partners. But there is also another stuff community related…

The Nutanix CE (Community Edition) is a lighter-weight, free version of the Nutanix Operating System (NOS), which powers the Nutanix Virtual Platform. The Community Edition of NOS is designed for people interested in test driving its main features on their own hardware and infrastructure, but also learn more on Nutanix.

Community Edition allows you to install single-node, three-node, and four-node clusters! Depending on your available hardware, Nutanix recommends a three-node cluster to exercise the features of Community Edition most effectively.

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I’ve already talk about Big Switch in some previous posts (see Big Switch Networks has a big announce), now there are other news both in the Big Cloud Fabric (with new version 2.6) and Big Tap Monitoring Fabric (with the new versione 4.5).

The Big Tap product does not need too much explanation: it’s a 1G/10G/40G network visibility fabric that leverages high-performance bare metal Ethernet switches or Dell Open Networking switches to provide pervasive and scalable monitoring of an organization’s network traffic. The new version will add some new features and will support new switches (like the Dell S4048-ON). If you need deep network monitoring and visibility this could be an interesting solution.

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