Educational Episodes: Hyperconverged Infrastructure (HCI)

NUMA stands for Non Unified Memory Access and Nehalem was the first generation of Intel CPUs where NUMA was presented. However, the first commercial implementation of NUMA goes back to 1985, developed in Honeywell Information Systems Italy XPS-100 by Dan Gielan.

Solid-State-Drives are becoming widely implemented in ESXi hosts for caching (vFlash Read Cache, PernixData FVP), Virtual SAN or plain Datastores. Unfortunately, SSDs have limited lifetime per cell. Its value may range from 1.000 times in consumer TLC SSDs up to 100.000 times in enterprise SLC based SSDs. Lifetime can be estimated by device TBW parameters provided by vendor in its specification, It describes how many Terabytes can be written to the entire device, until the warranty expires.

Nano Server is a headless, remotely managed version of its server product that comes as a separate installation option in Windows Server 2016, which is in Technical Preview 5 at the moment, but is thought to represent the final feature version before RTM.

Here is an overview dedicated to disaster recovery, more specific, it’s about the DR capabilities of Microsoft Storage Replica – a new feature of Windows Server 2016. It takes a glance on the DR process itself and then brings a few details of the Storage Replica operation, its features, and peculiarities. They include zero data loss, block-level replication, simple deployment and management, guest and host, SMB3 protocol, high security, high performance, consistency groups, user delegation, network constraint, thin provisioning, etc. The post is, basically, an introduction to a series of experiments also listed on the blog. They were conducted in order to check the functionality and performance of Microsoft Storage Replica in different use cases.

This is an overview of the Server Message Block (SMB3) protocol from Microsoft. It offers a short insight into the history of SMB3 creation and development over the years (as the idea is technically around 30 years old). As of Windows Server 2012, the protocol got new features: SMB Transparent Failover, SMB Scale Out, SMB Multichannel, SMB Direct, SMB Encryption, VSS for SMB file shares, SMB Directory Leasing, SMB PowerShell. In Windows Server 2016, it also got Pre-authentication integrity and Cluster dialect fencing. The post concentrates on RDMA-capable SMB Direct and MPIO-utilizing SMB Multichannel and their benefits. Also, it is an introduction to a series of tests aimed at creating SMB 3.0 File Servers in an unusual way.

While the Windows Server 2016 “Technical Preview (TP) 5 has had the option for restoring data via System Restore protection, Microsoft did not keep this option in the final release. As such, we have only two built-in options.

After spyware and malware IT administrators do have to face another threat – A Ransomware. You have to pay to recover your data that has been encrypted by malware. Clever move from the Pirate’s perspective. Indeed. Pirates are hoping that they can make some dirty money out of it. And sometimes they’re successful. You might be asking what can you do, as a system administrator, to protect yourself against ransomware?

As we know, Backblaze publishes the specifications its product – Storage Pods, and recently it has announced its sixth generation design, with the number of disks rising from 45 to 60 while reducing costs down even further.

In part two of this multi part blog series, we covered the creation and configuration of a GitHub account, to host a GitHub repository for a Quick Start template, and then we examined Visual Studio Code integration with Git and lastly we pushed commits to a remote repository on GitHub.

In the final post, we will modify and deploy sample and custom template and parameter JSON files.

If you missed Part I and Part II, please make sure to check them here Part I and Part II before you continue with the last part.