Hello everyone, I would greatly appreciate your input on this matter:
For my bachelor thesis, I aim to explore the topic of long-term storage/archiving with a focus on optical storage media. I have spent the past few months conducting research on this subject and am convinced that Blu-ray Discs offer a meaningful solution. I am aware that this is a controversial statement, as many people harbor a strong aversion to optical media, but that is not my primary concern. What I need help with is the following issue:
Several scientific publications claim that the original burn quality has a certain impact on the medium’s subsequent lifespan. I want to investigate this assumption by examining the burn quality of blank discs available today. The inspiration for this thought experiment comes from a study on cdrinfo.com, titled “Blu-ray Writing Quality Tests Vol 2.” However, since this test took place in 2009, I believe it is appropriate to conduct a similar updated version. Test results from 2009 cannot be directly extrapolated to 2023, given the advancements in both drives and media.
Currently, I envision the following setup:
- Two identical drives will be used to burn the discs. The only difference between the drives will be their operating hours – one drive will be brand new, while the other will have accumulated several hundred, if not thousand, operating hours.
- Optical media from two different manufacturers will be examined.
- The optical drives will be connected to a PC dedicated solely to the burning and analysis of discs. Resources will be maximized for these tasks, and interference from other programs (mail, office, browser, etc.) will be minimized.
- The study will encompass not only Blu-rays but also CD-Rs and DVD-Rs.
- Various types of media will be tested, including consumer-grade, professional-grade, and “Archival-Discs.” Each type of disc will be represented by multiple samples to prevent statistical outliers (e.g., 5 discs/type).
- Tools such as ImgBurn, Nero Disc Speed, and DVDInfoPro will be utilized.
Through this setup, numerous aspects can be examined, such as differences between manufacturers, disc generations (CD vs. DVD vs. BD), and potential variations between drives. For instance, there might be more write errors on the drive with many operating hours, requiring subsequent correction.
I have created a sketch to illustrate my idea; hopefully, it is comprehensible.
What are your thoughts on these ideas? Is it all complete nonsense? Have I overlooked something fundamental? I truly rely on your experience and expertise, as I currently lack an external perspective.
I am at a point where I might either a) give up and look for another topic or b) delve deeper into the rabbit hole. I am in the very early stages of my research, and if the experiment proves sensible and relevant, it would be conducted no earlier than spring 2024. Additionally, I would need to check if I can secure the necessary funding – another potential obstacle.
P.S., this is not only my first post on r/datahoarder but also on Reddit as a whole. :3
I lack time to comment further here, but you’re already making some bad conclusions, and that’s not your role right now. Question everything.
For example, it’s not really about temperature. The main enemy of optical media is air, especially moisture in the air. I can leave a CD-R in a car (properly stored) that is 160 F inside in the summer, 2 F in the winter, and then disc is still fine 10 years later. Or I can put it in the (non-food) freezer, thaw it back out, and it’s fine. The main issue with freezers is frozen moisture from food.
This is a great example of how easy it is to be wrong.
About forums, mentioned above, realize that some of us also had “day jobs” in media (not just our passion hobby), or contracts, some of which may include NDAs. So we don’t speak in some official capacity, because we can’t. However, we can give out info in these unofficial locations, in an unofficial capacity, often behind avatars / usernames. You just have to know how to find us, and know how to ignore mouthy pretenders (like The Digital Dolphin / Dolphinius_Rex was in the 2000s, the short-lived Naked Geek, and some others). But again, most of what you’ll see is old content, backward looking, because optical media is really replaced now, by a mix of SSD and cloud. Much of the crowd is gone now, to the point where I’ve now lost many of my contacts.
Not to give you ideas, but I think a better thesis would be to imagine new media, that looks at strengths and weaknesses of extant media. A wish list of sorts. And I doubt you’ll be the first to do it, so locate others doing the same. For example, optical media that spins sucks. Spinning sucks, period. Perhaps a sort of “optical SSD” for archival? Since you like Jobs, think different. ;)
Well, that reply was longer than I intended.