I posted blog with the image of the 18 frame TS4500 library that we used while writing the Redbooks Publication IBM TS4500 R2 Tape Library Guide (coming soon). After posting the blog and showing off one of the first fully configured TS4500 libraries I realized that it sort of looks like just a bunch of boxes connected in a row.
The first thought was to give an example of how much data can be stored in a TS1150 (3592) cartridge (up to 10 TB native or up to 30 TB with 3:1 data compression*) or LTO 7 cartridge (6 TB native or up to 15 TB with 2.5:1 data compression*) times the number of slots and come up with big numbers:
- 3592 advanced cartridges: up to 175.5 PB per library (526.5 PB with 3:1 compression)*
- LTO Ultrium 7 cartridges: up to 139 PB per library (up to 347.5 PB with 2.5:1 compression)*
The next thought was to try and get my arms around how much data the TS4500 can store in more meaningful example.
Here is the think big did you know:
The US Library of Congress is the largest library in the world. Read the 2014 ANNUAL REPORT OF THE LIBRARIAN OF CONGRESS
and you will find amazing facts about huge amounts of data as well as how the data is changing just like we talk about all time such as increasing access speed, global access requirements, unlimited growth, new digital requirements. From the report:
"The Library’s current IT infrastructure includes five data centers in four building locations. These facilities support more than 650 physical servers, 540 virtual servers, 250 enterprise systems and applications, 8 petabytes of disk storage and 15 petabytes of backup and archive data on tape. "
Now back to the TS4500 big numbers in a small footprint:
The TS4500 can store up to 5.5 PBs of data in a single 10 square-foot library, more than three times the capacity of an IBM TS3500 tape library. The Library of Congress can store all of its 15 petabytes of backup and archive data in three frames. That leaves growth for adding 15 more frames. An actual implementation may spread the data out and in multiple libraries based on their business requirements. The point is that the TS4500 can support huge amounts of data now and be able to grow with the ever increasing demand for storing more data long term and protecting the data growth.
* Capacity depends on drives installed, number and type of cartridges used, and compression ratio achieved. Listed capacity is physical. Usable capacity may be less.