Archive for August, 2023

A list of all my @ExpertsExchange articles and videos can be found at The CodHeadClub

Monday, August 21st, 2023

A list of all my Experts Exchange articles and videos can be found here – at the  – CodHeadClub – To copy and paste! 

http://tinyurl.com/AwesomeResourcesURL

This is an Awesome List of Computer Science, Technology, Programming and Educational resources for the benefit of all who care to use it.

The list was originally created by Closebracket.

I’ve now written over 140 articles and created 40 hours of tutorial VMware vSphere videos on vSphere 7.0 and 8.0. and today published Part 50 – VMware vSphere videos on vSphere 7.0.

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HOW TO: Perform storage performance tests on VMware vSphere vSAN, using the VMware Hyper-converged Infrastructure Benchmark fling (HCIBench)

Monday, August 14th, 2023

In this video presentation which is part of the Hancock’s VMware Half Hour HOW TO Video Series I will show you HOW TO:  Perform storage performance tests on VMware vSphere vSAN, using the VMware Hyper-converged Infrastructure Benchmark fling (HCIBench).

HCIBench is a storage performance testing automation tool that simplifies and accelerates customer Proof of Concept (POC) performance testing in a consistent and controlled way. VMware vSAN Community Forum provides support for HCIBench.

HCIBench

The storage devices we are using in this video are the Intel® Optane™ SSD DC P4800X Series 375GB, 2.5in PCIe x4, 3D XPoint™, but this procedure can be use to add any compatible storage devices in ESXi to a vSAN datastore.

This video follows on from the follow video in this series

Part 36: HOW TO: Select an inexpensive HCL Certified 10GBe network interfaces for vSphere ESXi 7.0 and vSphere ESXi 8.0 for VMware vSphere vSAN

Part 37: HOW TO: Change the LBA sector size of storage media to make it compatible with VMware vSphere Hypervisor ESXi 7.0 and ESXi 8.0.

Part 39: HOW TO: Create a VMware vSphere Distributed Switch (VDS) for use with VMware vSphere vSAN for the VMware vSphere vSAN Cluster.

If you are creating a design for VMware vSphere vSAN for a Production environment, please ensure you read the  VMware Cloud Foundation Design Guide 01 JUN 2023 – this should be regarded as The Bible!

References

HOW TO: FIX the Warning System logs on host are stored on non-persistent storage, Move system logs to NFS shared storage.

WHAT’S HAPPENING WITH INTEL OPTANE? – Mr vSAN – Simon Todd

Matt Mancini blog

VMware vSAN 8.0 U1 Express Storage Architecture Deep Dive

VMware vSAN 7.0 U3 Deep Dive Paperback – 5 May 2022

The results generated from this video are available here in these PDFs for download

FIO Benchmarks

4K/70%Read/100%Random

4K/100%Read100%Random

8K/50%Read/100%Random

256K/100%Write/100%Sequential

VDBENCH Benchmarks

4K/70%Read/100%Random
4K/100%Read100%Random
8K/50%Read/100%Random
256K/100%Write/100%Sequential

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Openreach ONT and BBU Service !

Saturday, August 12th, 2023

I thought I would document this, as I could not find any photos, videos, pictures on the internet, of a complete “legacy” system, as Openreach only supply an ONT at present, no BBU, so you don’t have a larger box, which contains, ONT and BBU, and I found it difficult to remove the BBU, you need to push up and pull ! It does budge, it’s not screwed, e.g. you do not need to remove the entire box from wall and disturb the fibre!

It’s been five years now, since the FTTP (Fibre To The Premises) was installed, and during that time it has worked flawlessly with no issues.

But 2023, we’ve had a few issues and recently in the last week we’ve had two major outages, the first outage lasted 5 hours, which was an underground fault 1000m away, and Openreach just physically moved “the shire” onto another fibre in the  ground.

and then Friday just gone, off for 15 hours, whilst I suspect another fibre cable in the ground had failed.

So this has given me a moment to change the AA batteries in the BBU (battery back unit), which has had a failed RED light on for many years, and Openreach no longer supply/install or replace the batteries in these units, it’s Self Service!

So off to Amazon, to purchase 8 x AA Energiser rechargeable batteries, the specifications state any batteries > 2000mAh

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