Re: DVD RAM?
- From: Splork <healer@xxxxxxxxxxxxxxxxxxx>
- Date: Sat, 25 Feb 2006 06:56:21 -0500
On 22 Feb 2006 23:20:01 GMT, Arno Wagner <me@xxxxxxxxxxx> wrote:
Previously J. Clarke <jclarke.usenet@xxxxxxxxxxxxxxxx> wrote:Hi,
Pete wrote:
Hi
I have read that DVD RAM is a much more reliable media for important
backups. However I cant seem to see any drives that take the media in
their cartridge, only DVD re-writers like the GSA 4167b that mention
DVD RAM but pressumably use the type 4 cartridge with the disk removed.
Can anyone recommend makes/models that use the disks in their caddies?
You're looking for older SCSI drives. Ebay is your best bet, brands would
be Pioneer or Plasmon (not sure if Plasmon made drives or just relabelled
Pioneer).
The chemistry of DVD-RAM is the same as for DVD-RW, all that is different is
the formatting. There's no real reason to believe that DVD-RAM will be any
more durable than DVD-RW, its main advantage is convenience--DVD-RAM is
designed for data storage and can be treated like just another disk without
kluges such as packet-writing.
Actually there is a serious advantage: RVD-RAM uses verify on write
and does defect management. There is also a second serious advantage:
The cartridge.
If you want durable random-access media in that capacity range you would do
better to go with magneto-optical.
Agreed. DVD-RAM was intended to be the MOD succesor, but it is not
up to it. I have all my important stuff on 3.5" MODs. Usually two
copies. So far I have not los a single bit in 7 years using
this technology.
Arno
Pardon my interest.
I use MO as well. 3.5" and 5.25" Truly archival. Still deal a bit in drives
and media as well though mostly 3.5". The 5.25 inch drives that are predominant
are Sony, Maxoptix, Pinnacle and a few others. Pioneer had Phase change (PD)
media if I recall and were incompatible with MO. Plasmon had MO drives but I
have only had my hands on the Plasmon media and it was MO.
3.5" drives were made by fujitsu and Olympus. I think every other vendor OEMd
these 2 Mfgs.
My Question:
Do you have any experience of what actual write times for DVD-RAM are?? I know
it is slower due to the implementation of a more reliable format. Interested
in the comparison. The main drawback in MO is the slow write times.
I agree that the built in verify function in MO and now DVD-RAM is a major
benefit.
Thanks
BTW There were 3.5" and 5.25" cleaning kits to decontaminate the cartridges.
Since 5.25" cartridges used both sides of the media they were more easily
impacted than their smaller bretheren which used the underside to R/W. After
dusting em off, an optical fluid was used to clean (de-haze) them. Really
filthy cartridges (from badly placed jukeboxes usually) had the inner shell
soiled as well and were not rehabilitable unless disassembled and washed.
.
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