Recently we had to troubleshoot rather high storage latency at a customer site. The environment consists of Hyper-V hosts connecting to 3PAR arrays via iSCSI. 3PAR arrays are all-flash arrays (AFA). I know such problems in vSphere environments too. There higher storage latency can be caused by delayed acknowledgement (DelAck). Read more about this issue and how to configure DelAck on vSphere ESXi hosts here. […]
HPE InfoSight is a cloud based IT operations management platform which uses artificial intelligence (AI) for data/metric analysis. So it is able to proactively find issues in individual environments before they actually causes a problem. Currently it is possible to connect these HPE products to InfoSight: Nimble Storage, 3PAR/Primera Storage, SimpliVity HCI, Servers. This post shows how to add HPE servers to InfoSight. For this, […]
This post is about two cool and powerful products: VMware vRealize Operations Manger (vROPs) and HPE Primers/3PAR and how to combine them. This post includes current versions of both. Good and a bad news about costs: Bad first: vROPs free for a short period of time as trial. Good one: HPE Plug-In is free! Version 3.7 of HPE Storage Plug-ins for VMware is the first […]
It is not uncommon to get errors after a host update/upgrade you didn’t see before on the host. The following error could be seen as an example of errors with the same cause. The error I did an upgrade of a 6.5 host (installed with HPE ESXi image almost 2 years ago) to the latest HPE ESXi image of 6.7 U3. After final boot the […]
A new – and badly documented – feature in StoreServ Management Console 3.6 is Topology Insights. Sounds first like the probably known Maps. But Topology View shows an end-to-end view: VM <–> VMDK <–> Datastore <–> Host <–> Virtual Volume <–> System. Enriched with performance-information! This short post is about this feature and how to get it.
First, what does active/standby mean. For this blog post, it means the array hast at least 2 controllers, one presents ALL LUNs to the hosts, the second controller presents NO active LUNs path to the hosts. Just in case of a manual or automatic failover, the second controller takes-over ALL LUN-presentations – and active paths. Examples of such arrays are: [very old one] HP MSA 1000 HPE Nimble […]
Normally when using a self-signed certificate you get a warning. It is also normal to accept the certificate to continue your task. These days I wanted to register a 3PAR system as storage provider in vCenter. Because of a certification error, this could not be accomplished. In this post I describe how to solve – at least my – problem.
These days I had a problem with full ESXi ramdisk. Running vdf -h shows tmp as 100% used. Furthermore there are a lot of errors in vmkernel.log like: VisorFSRam: 233: Cannot extend visorfs file /var/lib/vmware/hostd/journal/ because its ramdisk (root) is full. There are some other problems these hosts suffer from time to time: vSphere HA issus like master of cluster cannot be found/elected. Connection problems with […]
Recently I had problems to connect a 3PAR system to a quorum appliance. Quorum is needed in a Peer Persistence configuration. The system had a connection to the quorum. After HPE support did replace a node, connection could not be established any more. Command showcropy -qw shows error “below min safe num QAs” and other errors talking about QAs. In SSMC quorum was stated as […]