El 2003-05-27 a las 13:05, Mojada Rodriguez, Jose Francisco escribió:
--> Por cierto, me han dicho que hay un dispositivo que llaman dvd-ram, en realidad un magneto-óptico, que es ideal para backups: fiable y rápido (o casi) como un disco duro, removible, acceso aleatorio R/W miles o millones de veces, y de gran capacidad (¿9 gigas?). Mejor que un DVD,creo.
Se trata de un DVD de toda la vida, sólo que con doble cara, o doble estrato, y un sistema de ficheros distinto.
No, no es un DVD. Es un magneto-optico que permite borrar y escribir como en un disco duro, por sectores, miles de veces. En un dvd tuestas la imagen una vez, y se acabó, igual que en un CD. Extraigo la info: |> Date: Fri, 2 May 2003 05:35:38 -0400 |> From: zentara |> To: suse-linux-e@suse.com |> Subject: Re: [SLE] tar question |> |> [...] |> |> Most of this post is from the iZ site (www.recordingtheworld.com) but I |> thought folks here would be interested. Some interesting info that may |> help clear up some of the confusion on the DVD-RAM technology and its |> future. |> |> DVD-RAM is a completely different technology designed for different |> applications than any of the other formats such as DVD-R, DVD-R/W or |> DVD-R+. DVD-RAM is specifically designed for a minimum of 100,000 |> read/write cycles (much more than even a floppy disk) so it can be used |> effectively as a RELIABLE backup/restore media and for transferring |> files between systems over and over again. Unlike DVD-R where the data |> layer is on the top surface and vulnerable to scratches, the data layer |> in DVD-RAM is embedded between two layers of plastic and the disk |> itself is in a protective cartridge. Because of the embedded nature of |> the data layer the disk is much more robust than the write once formats |> even if you take it out of the cartridge. [...] |> DVD-RAM disks are really just a cost reduced version of the old M-O |> drives (Magneto-Optical)drives. DVD-RAM drives use phase-change |> technology in which a laser heats the inner surface of the disk so that |> it can be magnetically charge it(just like M-O drives). This allows the |> data to be rewritten hundreds of thousands of times. A |> "wobble-land-groove" format provides clocking data, with marks written |> on both the grooves and the lands between grooves. The grooves and |> pre-embossed sector headers are molded into the disc during |> manufacturing. The DVD-RAM wobble-land-groove format or track structure |> makes DVD-RAM technology reliable, and the constant linear velocity |> format provides high access speed and capacity. Bueno, si quereis más datos, está en el archivo de la SLE. -- Saludos Carlos Robinson