IBM Tape Solutions for Storage Area Networks and FICON

Chapter 5. Tape solutions 125

Additional information

For the latest product and support information, refer to these Web sites:

򐂰 IBM 3584 Ultrium UltraScalable Tape Library

http://www.ibm.com/storage/lto

򐂰 IBM 2109 Fibre Channel switch

http://www-1.ibm.com/servers/storage/support/san/2109s16.html

򐂰 IBM 2108 SAN Data Gateway

http://www-1.ibm.com/servers/storage/support/san/2108g07.html

򐂰 SAN information

http://www.ibm.com/san

򐂰 Tivoli Storage Manager

http://www.tivoli.com/tsm

5.3 Disaster tolerant tape implementation

The previous section looked at solutions for remote tape vaulting. This section looks at

disaster tolerance. The similarity between remote tape vaulting and disaster tolerance is

extended distance, and the main difference is that, for a fully disaster tolerant solution, two

tape libraries are required.

Unlike disk storage systems, most tape libraries do not have mirror or remote mirror

capability. This means that the second copy needs to be initiated externally by a server. You

can do this in many ways, depending on the total disaster tolerant implementation which

includes server, disk, tape, and software.

A typical disaster tolerant implementation consists of duplicate servers in a cluster and

duplicate disk storage with peer-to-peer remote copy. However, the demand to include

back-up and restore as part of a complete disaster tolerant solutions is increasing.

9001 Driveless frame

2109-S16 SAN Fibre Channel Switch 2

2010 Shortwave GBIC 14

2020 Longwave GBIC 4

6106 Additional power supply 2

Included StorWatch SAN Fibre Channel switch Specialist 1

2108-G07 SAN Data Gateway 2

2214 Dual SW Fibre switch port 2

2319 Additional single Fibre Channel longwave port 4

Included StorWatch SAN Data Gateway Specialist 1

5698-TSM Tivoli Storage Manager

Product or

feature code

Description Qty