SAN Multiprotocol Routing: An Introduction and Implementation

Chapter 1. SAN routing 13

Figure 1-6 shows an accelerated write request.

Figure 1-6 Write acceleration or fast write request

1.3.5 Tape acceleration

Tape acceleration (TA) takes write acceleration one step further by “spoofing” the

transfer ready and the write acknowledgement. This gives the tape transfer a

better chance of streaming rather than running stop and start. The risk here is

that writes have been acknowledged but might not have completed successfully.

Without tape acceleration, a sophisticated backup/restore application, such as

IBM Tivoli® Storage Manager, can recover and restart from a broken link.

However, with TA, Tivoli Storage ...