Archived posting to the Leica Users Group, 2010/03/25
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Good point Dennis. This should be moved to the other mailing list. Regards, Spencer On Mar 25, 2010, at 6:06, Dennis wrote: > Hi Spencer, > > I think we may want to put this over to the Imagestore list, but. > > At some point, say over 10TB, and growing, I think you are reaching a > point of diminishing returns using disc drives for backup and/or > archiving. Managing a lot of disc drives manually becomes a tedious and > error prone task. This is where automation can be your friend. John's tape > library is more than I would expect a photographer to need but I would > want a library that accepts at least two drives in order to migrate data > to the next generation media. Typically these libraries are attached to > servers. I am not sure but expect that you can run them on a unix or > windows system, not sure about Mac. > > It's likely that you will need a server to keep up with the performance of > the drive. LTO 4 can write data at speed of up to 120 MB/s.I don't think > windows desktop can serve up that data rate. The drive can stream at lower > data rates but obviously the backup will take longer. > > The LTO format is very reliable. They are not designed to be consumer > products, the typical customer is going to be a large corporation that > expects and gets a reliable product. The media life that John quoted > sounds like the spec to me. Once you write data to the tape you should > never have to check it. If you want I can discuss the read after write > that occurs in real time when data is written, the error correction that > is part of the LTO specification, and, importantly the servo tracking that > is important to ensuring data written can be read back on another drive. > Keep in mind that the major drive manufactures are HP, IBM, and Quantum > (Quantum acquired its seat as one of the technology providers of the LTO > Consortium when Quantum bought Certance, a spin off from Seagate) > > Backup software is going to be selected from the library vendors list of > qualified vendors. >