Just read in library that we should not Journal our HDD.

[Jeremy Garchow]

[keyframe] “in the (old) 2004 post.
“

That article is misleading and kind of vague, basically saying, “You figure it out, you video numnuts”. The interesting part is this:

“When Should Journaling Be Used?

Journaling is best suited for servers requiring high availability, servers containing volumes with many files, and servers containing data that is backed up at infrequent intervals (nightly, for example).

If a volume contains read-only data that is not mission-critical, it may not be necessary to turn on journaling if performance is more important than safety.

If your server contains high-bandwidth usage data files, such as large video, graphics, or audio files, you may want to weigh the benefits of using journaling against the performance needed to access your data. In most cases, the impact of journaling upon data access performance are unnoticeable to users, but its implementation may not be practical for servers where data access demands outweigh its benefits.”

My D800RAID is brand new with ‘brand new’ SAS technology and journaling is recommended for setup, especially for RAIDs where data integrity is paramount and resides in large volumes. And the article talks about ‘servers’ which my RAID is technically not a server, but a raid.

I don’t think much has changed with the functionality of journaling since way back in the yesteryear of Two Thousand Ought-Four. (The article was updated in April of Two Thousand Ought-Seven by the way).

Jeremy

[Rafael Amador]

You can enable or disable journaling with the Disk Utility.
Select the voulume. Clik “Option” and “Disable journaling” will appear as an option in the File Menu.
Rafael

[Keyframe]

Jeremy,

When I mentioned 2004, I was talking about part of a thread you referenced.

[from May 5, 2004]
“FWIW, this question was raised at NAB at the FCPUG meeting. At the meeting, many of the senior members of the FCP engineering team were there. They said they had done lots of tests on the impact of Journaling and found that the difference is negligible and recommended keeping Journaling on all partitions.

Jeff Bernstein
Digital Desktop Consulting”

Jeremy, I was not trying to say that your comments were out of date; on the contrary, I welcomed them. I thought it fair to mentioned “old” to acknowledge the age of the post by J. Bernstein.

I’m glad to see someone (you) provide some balance to this “no journaling for media volumes–EVER” concept. I have wondered about enabling journaling on media volumes. Since my experience with a (corrupted?) media volume (G-Tech G-RAID) where about 400GB of data was lost, I have not wanted to dismiss the idea of using journaling with media volumes. [I know, backup, RAID-5, etc. might be more secure methods, but still…] Though journaling might not have prevented that particular loss, I wonder if it might have helped maintain the integrity of the file system. Hasn’t NTFS had some sort of journaling since the days of Windows NT?

I referenced the Apple article to provide instructions for disabling journaling–not so much to prove/disprove the need for journaling on media volumes.

I apologize if I was/am confusing or misleading.

Steve Grimes

[Jeremy Garchow]

Steve, don’t worry about a thing. Thanks for your comments.

I just liked the opportunity to say ought-four and ought-seven in a sentence and not talk about early 20th century history. After all, it’s going to be another hundred years before any ever lives in the oughts again, you know? We are charmed.

[keyframe] “Though journaling might not have prevented that particular loss, I wonder if it might have helped maintain the integrity of the file system.”

That is totally the right idea, THIS IS NOT to say that the data could have been resurrected, but there’s a better chance that something could have been reconstructed using the journal. When a raid0 goes bad though, all is usually lost unfortunately.

[keyframe] “Hasn’t NTFS had some sort of journaling since the days of Windows NT?
“

Good question, it was a half decade or so before pre 21st century oughts that I had much to do with Windows.

[Jeremy Garchow]

Well, now I am totally confused.

Look at the bottom of this article:

https://docs.info.apple.com/article.html?artnum=306971