Re: [CentOS] new laptop: DVD or Blu-ray
Hi,
ken wrote:
> One of the build options for a laptop I'm looking at buying is DVD vs
> Blu-Ray. I've never used Blue-ray before, so is there some compelling
> reason, as a Linux guy, to want to get Blu-ray?
If you want to backup disk files, then BD is much less
cumbersome than DVD. My Debian 8 installation except $HOME,
$WORK, and $DISKWASTE needs 10 GB of base backup as ISO 9660.
This would need to be split onto 3 DVD+RW. If i wanted
to do incremental backups, i'd have to juggle with about
5 DVDs.
The BD-RE medium is half full after two months and 9
incremental updates. I expect it to take years of future
system changes. (There is also an ISO image on hard disk.
For the case of smaller mishaps and as backup of the
backup if the BD-RE fails some day.)
$HOME, $WORK, $DISKWASTE have their own backups.
Backup-worthy $DISKWASTE is on 12 BD-R plus a BD-RE
for updates.
(One would probably consider to use an old hdd in a
USB box instead.)
Mauricio Tavares wrote:
> One of the compelling reasons against is that only movies use it.
BD-R and BD-RE are general purpose storage media.
BD-RE is directly usable as block device like a USB stick.
Format it by a burn program and then use dd, mkfs, mount,
and alike. Suffer poor rw-filesytem performance, though.
BD-R (and BD-RE) can be written by burn programs. At least
four backends are known to work:
growisofs, cdrecord, cdrskin, xorriso
> On the positive side, blueray sounds cooler than DVD.
Yeah. Optiarc BD-5300S at full speed sounds like a Ducati.
Gary Dale wrote (on debian-user only):
> Another point to consider is "does the Blu-Ray drive support the new
> m-discs? (see https://en.wikipedia.org/wiki/M-DISC)" Not all of them do.
The BD-R M-discs are compatible with vanilla Blu-ray burners.
The DVD+R M-discs need specially enhanced DVD burners (from LG).
> M-Disc's big selling feature is long-term stability, making it good for
> archiving or other long-term storage uses.
Reports from real use cases are still sparse.
The media aren't cheap.
> the optical drive offers essentially unlimited capacity by
> swapping discs.
Optical media are quite suitable for long term storage.
Rugged and easy to bundle in a cake box.
I can still checkread with my newest drive the CDs which
i made in 1999 on a long deceased Yamaha burner.
Price per capacity is better than with USB sticks but cannot
compete with a modern hard disk in a USB box. Especially if
you add the price of the BD burner.
many wrote:
> [video playback, DRM]
Well, this is a topic where you need to have your lawyer ready.
> Personal preference. Who uses blu ray? Who uses DVDs?
We should not forget that there once were media called "CD".
I use all three types for data storage and transport.
Have a nice day :)
Thomas
Reply to: