Health & PersonalGuides
How to Read Your ECG Report
What the squares mean, what each bump is, why there are twelve leads when you have one heart, and a worked example read in five steps with the arithmetic shown.
10 min read0 views
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Browse the complete collection of guides, runbooks, and troubleshooting articles.
279 articles
Health & PersonalGuides
Cerebrospinal Fluid: Where It Comes From, Where It Goes, and What It Tells a Doctor
Half a litre of it is made every day, you only hold about 150 mL at a time, and it is the reason your brain is not crushed by its own weight. The full circuit, what happens when it is blocked, and what a lumbar puncture actually reads.
9 min read0 views
Health & PersonalGuides
Eating, Sleeping, Talking, Remembering: Which Part of the Brain Does What
Four things you did today, and the structures that ran each one. A map you can hold in your head, built around the one trick that makes brain anatomy stick: almost every region's job was worked out from what broke when it was damaged.
11 min read0 views
VCF 9.1VMware Cloud FoundationArchitectureGuides
VCF High Availability, Explained as a Human Body
Which VCF components come as a pair and which do not, why a cluster is three nodes when a body gets by with two kidneys, and what vSphere HA is really doing underneath all of it.
8 min read0 views
VCF 9.1VMware Cloud FoundationAutomationGuides
Skipping VCF Automation During a Brownfield Converge
VCF Installer lets you leave VCF Automation out of a converge, finish the platform, and then bring your existing VMware Aria Automation in and upgrade it. The option is documented in three places, and the detail worth knowing is which menu you come back through.
4 min read0 views
VCF 9.1VMware Cloud FoundationRelease Notes & PatchesAutomation
What VCF Automation 9.1.1.0200 Fixes
Fourteen resolved issues, five of them in the upgrade path. One of them lifts a datastore restriction, one formalises the Migration Service Engine ordering rule, and one was silently throwing away your proxy configuration while reporting success.
9 min read0 views
VCF 9.1VMware Cloud FoundationGuidesAutomation
VCF Automation Upgrade Prechecks, Explained
Forty three prechecks run before a VCF Automation upgrade, and most of them are testing things you can check yourself a week earlier. Here is what they look for, what the exit codes mean, and the thresholds worth knowing before you book the window.
15 min read0 views
VCF 9.1VMware Cloud FoundationArchitecture
VCF Management Services Models, Explained
Deploying a VCF instance asks you two questions about management services: which components run here, and how is the cluster built. The documentation answers both in two tables and two diagrams. Here is the same thing as a story.
4 min read0 views
VCF 9.1VMware Cloud FoundationGuides
Managing Passwords in VCF 9.1
VCF 9.1 adds password policies, so you can set length, complexity, expiration and lockout once and apply them across the fleet. VCF Operations keeps no copy of your passwords, and CyberArk integration gives you somewhere to store them.
6 min read0 views
VCF 9.1VMware Cloud FoundationGuidesAutomation
Deploying a VCF Operations Orchestrator Cluster
Sizing for VCF Operations Orchestrator is a short answer, one fixed appliance spec and exactly three nodes. The longer part is building the cluster, which is a load balancer, three OVA deployments and five commands over SSH.
5 min read0 views
VCF 9.1VMware Cloud FoundationArchitectureAutomation
VCF Automation Config Maximums, 9.0 Through 9.1.1
Every published VCF Automation configuration maximum from 9.0.0 to 9.1.1 on one page, Medium and Large profiles side by side. Those numbers are the All Apps figures, so the vRealize Automation limits that a VM Apps organization keeps are here too.
13 min read0 views
VCF 9.1VMware Cloud FoundationArchitecture
VCF Automation Sizing: What You Are Actually Choosing
Two dropdowns in the planning workbook decide the VCF Automation footprint. Small deploys a single node, Medium and Large deploy a three-node cluster, and the numbers follow from that. Figures taken from the VCF planning and preparation workbooks.
4 min read0 views
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