Add iSCSI targets and set target parameter with PowerCLI

Add iSCSI targets and set target parameter with PowerCLI

The code snippet in this blog post is an example of how to add iSCSI targets to an ESXi iSCSI initiator. But there is also a loop within processing a host, that sets iSCSI target parameter. For example this can be used when a storage vendor recommends to disable delayed acknowledgment per iSCSI target, like HPE does for 3PAR and LeftHand. Here you can see […]

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PowerCLI script to count paths to VMFS volumes

PowerCLI script to count paths to VMFS volumes

When implementing new storages or configure existing ones it is a good idea to check paths (state and amount) to volumes. When operating a few hosts using a few datastores this can be a very time-consuming task when using the GUI. Therefore I wrote the following function.

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Errors when installing SimpliVity Deployment Manager

Errors when installing SimpliVity Deployment Manager

To deploy new HPE SimpliVity nodes, you need to run Deployment Manager. Current version at writing: 3.7.6.244. Requirements to run Deployment Manager are: .NET 4.7.1 and Java 1.8. When .NET is not installed during installation, wizard links to Microsoft and starts the download. When Java is not installed or too old, an message is shown at first start. Sounds very simple. Anyway I had some […]

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3PAR (iSCSI) – resolve high write latency on ESXi hosts

3PAR (iSCSI) – resolve high write latency on ESXi hosts

FC AFA (all flash array) 3PAR  systems show quite a good latency on reads and writes. When operating an iSCSI AFA 3PAR it could happen that the systems show a rather high write latency on ESXi hosts. In this post you can read how to fix this.

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simple linux Script to shut down VMs and ESXi host

simple linux Script to shut down VMs and ESXi host

Here is a very simple linux bash script to shut down all VMs of a ESXi host and the host itself, for example when a power failure occurs, this script can be used in UPS software. Some time ago a posted how to use such script in an HPE UPS environment. You can find the post here.

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Error send to root account in ESXi

On a HPE Proliant Server upgraded to ESXi 6.0 U3 image: VMware-ESXi-6.0.0-Update3-6921384-HPE-600.10.2.0.23-Feb2018.iso I get the error sent to root-account: WorldList: malloc failed when allocating allNodes list So, you can see the error every few minutes when you logged in to console or using SSH. In /var/log/vmkernel.log you can see this error: User: 3820: sfcb-intelcim: wantCoreDump:sfcb-intelcim signal:6 exitCode:0 coredump:disabled This is caused by a problem with HPE […]

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How PDL (Permanent Device Loss) looks like

How PDL (Permanent Device Loss) looks like

Some time ago differentiation between PDL (Permanent Device Loss) and APD (All Path Down) was introduced to vSphere. In a PDL situation, the hosts does not expect the device to return. PDL happens for example, when an administrator un-presents a LUN from a host. APD on the other hand is completely unplanned. By default the host tries to get the device back. Starting with vSphere […]

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HP Bundles are not updated using Update Manager

You probably know that you can add HP VIB Repositorys to VMware vSphere Update Manager. I normally add these links to Update Manager: http://vibsdepot.hp.com/index.xml http://vibsdepot.hp.com/index-drv.xml So you can define an own baseline for HP VIB packages or add them to you already existing baselines. I would recommend the first option.

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Configure HP iLO in ESXi console

To configure a HP iLO board you can use a web browser of course. But how to access iLO when you did not set a correct IP address or Administrator password in BIOS using F8 key? Of course you can reboot and enter F8 at boot. But to restart a ESXi host just to enter a iLO IP address is not very elegant. Here I will […]

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Update host without Update Manager by using esxcli

This blog post describes how to update respectively install VIBs on hosts without using VMware Update Manager (VUM). Instead of VUM we will use esxcli. esxcli software is a really powerful framework which you can use to keep your hosts up-to-date, install and remove bundles. The commands below are using real repositories and vSphere Installation Bundles (VIBs). These examples should work fine for ESXi 5.x. […]

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