Originally Posted by Res
In the non-consumer market tape is king right now, but I think that it will die out over the next decade. Companies have just started selling the first generation of holographic disks, which have 300GB capacity with transfer rates of 20MB/s and a 50+ year archive life span. Over the next few years InPhase Technologies plans to sell 1.6TB drives with 120MB transfer rates. Other companies plan to reach 3.9 TB per disk. In the coming years, with storage capacities up to nearly 4TB per disk and fast data transfer rates, holographic drives are going to be hard to beat for archiving large amounts of data.
Most companies won't even look at Inphase or holographic storage. In addition to high pricing it's still far behind Tape and HDD for performance.
Specification released to licensees on 11th January 2007 
Products based on LTO-4 expected in the first half of 2007.
Doubled capacity again to 800 GB.
Added drive level encryption.
Increase data transfer rate by 50% to 120 MB/s.
LTO 4 is going to deliver that next year. 1.6TB on a tape with 120MBps throughput.
Here's the DLT roadmaphttp://www.dlttape.com/Roadmap/index.aspx
- DLT S5 - 3TB 200MBps
- DLT S6 - 6TB 400MBps
- DLT S7- 12TB 800MBps
I'll go on record as saying Inphase is a joke. Holographic storage will never gain traction in the Enterprise and Optical formats are basically dead for backup. They don't have the performance or the durability that Tape offers.
Originally Posted by JeffDM
Redundant drives as in mirroring or parity correction are for failure resistance, not an archive or backup. Redundancy protects you from data loss from a failed drive. Archive/backups are for recovering from corruption or mistakes, which happens more often than drives fail.
Don't you mean 3.2TB?
The limitations to that sort of off-site storage has nothing to do with Apple, namely, the link to the outside world.
I disagree on some points. RAID based storage isn't optimum for archiving but companies are very much utilizing RAID storage as a backup medium and then choosing to archive to tape. D2D2T is actually a buzzword hyped workflow that actually works. Contrary to erroneous beliefs that tape drives are slow a LTO-3 requires damn fast computer to spool data and as we progress to LTO 4 and beyond the problem will be exacerbated.
With Today's RAID 6 and tomorrow's ZFS and other more robust fs I can see companies keeping more data backup on nearline storage arrays prior to longterm archival. Most companies can track how many restores they have to do and from that data ascertain how long they should keep backup data on nearline storage. Plus with end user restore features coming the longer you can safely keep data on nearline storage the less IT intervention you need.
Yes I meant 3.2TB ..thank you.
Please don't take this as a denigration of Inphase tech. It will find a niche it's not going to usurp Linear Tape Open options developed by a consortium of the heavy hitters versus a trickle of Holographic storage vendors.