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Category Archive For: RAID

Why a HOT SPARE Hard Disk Is a Bad Idea

Updated on 03/08/2021 Due, in part, to the different views and opinions regarding the usage of hot spare disks in our previous post, we’ve decided to add an update for ...

August 24, 2021
49 Comments

Data Caching, Performance and Security

Updated 11/04/2022 I guess that all of us know that caching the data usually increases performance, but I wonder if all of us are aware of the risk that caching ...

January 17, 2021
No Comments

RAID 5: How does it work?

Updated 23/09/2021 A few years ago, we published an article ‘How does RAID 5 work? The shortest and easiest explanation ever’. We have to admit that this article enjoyed great ...

November 26, 2020
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RAID 2, RAID 3, RAID 4 – What It Is, How It Works? The History Lesson

Updated on 20/09/2021 After RAID 0 and RAID 1 (with RAID 1+0 and RAID 0+1) it is time for RAID 2, 3 and 4. Here we present a short description ...

October 13, 2020
2 Comments

What are RAID 1, RAID 1+0 and RAID 0+1

Updated 23/09/2021 This is the second article from our RAID series. We hope it shows what RAID is, its idea, and how it works in the easiest possible way. We ...

October 03, 2020
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Why RAID is Not a Backup

Last update: July 05, 2021 Today I would like to discuss the topic of RAID – more specifically backup issues. In the blog post title, I proposed a daring thesis ...

July 05, 2020
5 Comments

Binary Powers or Formatted Capacity Confusion

Last update: July 05, 2021 From time to time, some meticulous customer asks us how come a fresh formatted hard disk or RAID array volume is smaller than the nominal ...

July 05, 2020
9 Comments

ZFS Essentials – Data Integrity & RAIDZ

Today we continue the series of articles that aims at presenting the basics of the ZFS. In today’s article we’re further discussing this topic, focusing on the notions of data ...

October 17, 2019
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ZFS Essentials – Introduction to ZFS

ZFS stands for Zettabyte File System and is a file system originally developed by Sun Microsystems for building next-generation NAS solutions with better security, reliability, and performance. ZFS was designed ...

August 14, 2019
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Data security risks and Open-E JovianDSS countermeasures

Nowadays, it’s all about the data. Continuous and uninterrupted data availability is a must for all businesses. Unfortunately, there will always be a risk of sudden accidents that can make ...