Home » Cisco » 350-080 » Which two statements about FCIP Tape Acceleration are true?
Which two statements about FCIP Tape Acceleration are true? (Choose two.)
A. FCIP Tape Acceleration enables time stamp control on an FCIP interface.
B. The Cisco MDS switch proxies a transfer ready to signal the host to start receiving data.
C. FCIP Tape Acceleration uses TCP window management and a sliding window for flow control.
D. FCIP Tape Acceleration reduces each I/O processing time by two RTT.
E. FCIP Tape Acceleration only supports the read acceleration.
Correct Answer: BD
Explanation/Reference:
Explanation:
Tapes are storage devices that store and retrieve user data sequentially. Cisco MDS NX-OS provides both tape write and read acceleration.
Applications that access tape drives normally have only one SCSI WRITE or READ operation outstanding to it. This single command process limits the benefit of the tape acceleration feature when using an FCIP tunnel over a long-distance WAN link. It impacts backup, restore, and restore performance because each SCSI WRITE or READ operation does not complete until the host receives a good status response from the tape drive. The FCIP tape acceleration feature helps solve this problem. It improves tape backup, archive, and restore operations by allowing faster data streaming between the host and tape drive over the WAN link.
Reference: http://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/sw/5_0/configuration/guides/ipsvc/nxos/ipsvc/cfcip.html#pgfId-2465141
