• Skip to main content
  • Skip to primary sidebar
  • Home
  • About
    • Stephen Foskett
      • My Publications
        • Urban Forms in Suburbia: The Rise of the Edge City
      • Storage Magazine Columns
      • Whitepapers
      • Multimedia
      • Speaking Engagements
    • Services
    • Disclosures
  • Categories
    • Apple
    • Ask a Pack Rat
    • Computer History
    • Deals
    • Enterprise storage
    • Events
    • Personal
    • Photography
    • Terabyte home
    • Virtual Storage
  • Guides
    • The iPhone Exchange ActiveSync Guide
      • The iPhone Exchange ActiveSync Troubleshooting Guide
    • The iPad Exchange ActiveSync Guide
      • iPad Exchange ActiveSync Troubleshooting Guide
    • Toolbox
      • Power Over Ethernet Calculator
      • EMC Symmetrix WWN Calculator
      • EMC Symmetrix TimeFinder DOS Batch File
    • Linux Logical Volume Manager Walkthrough
  • Calendar

Stephen Foskett, Pack Rat

Understanding the accumulation of data

You are here: Home / Archives for RAID

RAID

Add a Mirror to an Existing ZFS Drive

December 11, 2017 By Stephen 3 Comments

One of my criticisms of ZFS is that it's not flexible: Once you set up a dataset, you're pretty much stuck with it. But this isn't entirely true: You can add a mirror or stripe to an existing pool without destroying the data. Since this is quite a common operation, I decided to write it up for posterity. A Very Simple ZFS Pool Let's say you built the world's most basic ZFS … [Read more...] about Add a Mirror to an Existing ZFS Drive

ZFS Is the Best Filesystem (For Now…)

July 10, 2017 By Stephen 53 Comments

ZFS should have been great, but I kind of hate it: ZFS seems to be trapped in the past, before it was sidelined it as the cool storage project of choice; it's inflexible; it lacks modern flash integration; and it's not directly supported by most operating systems. But I put all my valuable data on ZFS because it simply offers the best level of data protection in a small … [Read more...] about ZFS Is the Best Filesystem (For Now…)

Turn Off Error Recovery in RAID Drives: TLER, ERC, and CCTL

May 30, 2017 By Stephen 3 Comments

Hard disk drives encounter errors from time to time, so it's a good thing that most have the ability to recover data anyway. But RAID systems usually have their own error recovery capabilities and can be thrown off when a hard disk pauses I/O. So it's a good idea to use hard disk drives that allow you to disable or limit error recovery in RAID systems. Error Recovery … [Read more...] about Turn Off Error Recovery in RAID Drives: TLER, ERC, and CCTL

FreeNAS First Impressions

August 25, 2016 By Stephen 8 Comments

I've dabbled with FreeNAS in the past and had such a great experience with pfSense (a similar FreeBSD-based project) that I jumped in with both feet on my home office server build. But my initial impressions were, frankly, terrible. I've got the system running and stable now, but I'm finding it difficult to recommend FreeNAS at this point. 2017 Update: I'm still running … [Read more...] about FreeNAS First Impressions

The Four Horsemen of Storage System Performance Are Coming To Life!

October 30, 2015 By Stephen Leave a Comment

A few years back, I wrote an immensely-popular series of blog posts outlining the four things that were holding storage system performance back, and the ways to fix them. At the time, I created some presentation content to go along with these posts, and even considered pulling them into a white paper, but nothing came of that. Now, however, I'm pleased to announce that my Four … [Read more...] about The Four Horsemen of Storage System Performance Are Coming To Life!

Next Page »

Primary Sidebar

If you wish to make an apple pie from scratch, you must first invent the universe

Carl Sagan

Subscribe via Email

Subscribe via email and you will receive my latest blog posts in your inbox. No ads or spam, just the same great content you find on my site!
 New posts (daily)
 Where's Stephen? (weekly)

Download My Book


Download my free e-book:
Essential Enterprise Storage Concepts!

Recent Posts

What You See and What You Get When You Follow Me

May 28, 2019

GPS Time Rollover Failures Keep Happening (But They’re Almost Done)

April 6, 2019

Ranting and Raving About the 2018 iPad Pro

November 11, 2018

The 2018 iPad Pro is a Beast!

November 9, 2018

Add a Mirror to an Existing ZFS Drive

December 11, 2017

How To Remove Raw Images From Apple Photos and iCloud

July 24, 2017

Recalling An HP MediaSmart Server To Active Duty

July 21, 2017

Go Get a ProtonMail Account and Protect Your Online Life!

July 19, 2017

ZFS Is the Best Filesystem (For Now…)

July 10, 2017

Co-Processors, GPGPU, and Heterogeneous Computing

June 26, 2017

Symbolic Links

  • Owning the Technology Ecosystem

    Chris Evans

  • InfiniteIO And Your Data – Making Meta Better

    Dan Frith

  • Green Storage? Meh!

    Chin-Fah Heoh

  • AWS EC2 M6g Instance Types - What You Need to Know about New ARM CPUs

    Nathaniel Avery

  • AWS is not building Hybrid Cloud (as we know it)

    Chris Evans

Featured Posts

FCoE vs. iSCSI – Making the Choice

May 20, 2011

Why Buy a NEX-7? Why Sony NEX At All?

October 17, 2011

Making a Case For (and Against) Software-Defined Storage

January 9, 2014

GPS Time Rollover Failures Keep Happening (But They’re Almost Done)

April 6, 2019

The I/O Blender Part 1: Ye Olde Storage I/O Path

May 23, 2012

The Four Horsemen of Storage System Performance: The Rule of Spindles

August 25, 2010

Replacing Google Reader With Feedbin and Reeder

May 5, 2013

Why I Am Biased Against FCoE

October 21, 2011

A High-Tech Water Heater? Yep! Introducing the A. O. Smith Vertex

November 15, 2012

Regarding My Symbolic Links and Good Reads

April 16, 2015

Copyright © 2019 · Log in