2.Specification
2-8 SONY AIT-5 drive SDX-1100V series Ver. 1.0
2.3.8.
Long Erase Time
Long Erase Time means the period from the beginning of the Erase (long) sequence caused by Erase Command
at BOT. The data in the below table represents the average time for SDX-1100V. The time it may take for retrying
is not reflected here.
SDX3-100C (230 m)
SDX3X-150C (246 m)
SDX4-200C (246 m)
SDX5-400C (246 m)
Long Erase Time
2 hrs
2.5 hrs
2.5 hrs
5 hrs
2.3.9.
Error Rate
The un-correctable bit error rate is expected to be less than 1 in 10 to the 17th.
2.3.10.
Definition of Failure
A failure is defined as any permanent manufacture of the drive that prevents the user from retrieving data from
tape. This includes failure to power up, failure to unload or eject a cassette, or failure to write and read data to and
from the tape, providing that both the drive and tape are being used within specification.
Faults are not considered failures when they are related to operator error mishandling and abuse, system-related
faults (cabling problems unsupported systems, operating software and so on) no trouble found, and transportation
damage.
2.3.11.
Mean Time Between Failures
The Mean Time Between Failures (MTBF) for the SDX-1100V is 400,000 power-on hours, assuming a duty cycle
of 100%, where:
DutyCycle
=
Tape Motion Time
PowerOn Time
×
100
2.3.12.
Mean Time to Repair
The Mean Time To Repair (MTTR) of the SDX-1100V is 30 minutes. Since at the field level the entire drive is
considered a Field Replaceable Unit (FRU) the time to replace the drive with a new one is less that 30 minutes.
2.3.13.
Component Life
The specified life of the SDX-1100V is 5 years average.
2.3.14.
Durability
The durability of the components in the SDX-1100V will exceed the number of operations listed on the following
table:
Start/Stop 400,000
times
Reposition 3,000,000
times
Thread/Unthread 100,000
times
Load/Eject 100,000
times
