I am looking for alternative to 5.2GB magneto-optical device. Now i have SONY RMO-S551, that recently began acting up - it does not accept 2.6 GB and 5.2 GB disks (only 2.3 GB are fine. yet.).
MO are used for backup (~15 GB each week). Weekly backups are now written to DVD-R. THE problem is some data, that must be stored offline (in case anything goes wrong with online copy). It is modified/updated every second day and users need easily find what they need (it is ArcGIS databases). MO disks were suitable for that task. Now, when third device is failing (we had 2.6 GB Pinnacle Vertex - dead, 2.6GB SONY RMO-S594 - only reads 2.3GB disks) and new one costs more than 2000 Euro (HP 9.1GB, Maxoptix 5.2GB), MO no longer seems acceptable.
* CD-R/RW - too small
* 5.25" MO - new device is expensive and *rare*. No local shops have any, though i can order several models. BTW, it also looks like 5.25" MO are abandoned.
* DVD+-R/RW - in case data will be written the same rate as now, it would mean 2-3 new sessions each week. Ineffective use of space.
* tape. Right now we have several Exabyte Eliant820 (helical scan, up to 7GB) devices. They were good several years ago, but right now we have a lot of tapes and a lot of problems reading them :) Really 'write once, read maybe'... Also, it is quite difficult to search for specific file in the tape (and in our case, there are hundreds of databases and millions of files).
* USB HDD? They seem attractive now, but how about reliability?
* anything i have missed?