Quantum Audio STT2401A Manuel D’Utilisation

Seagate Travan 40 Product Manual 

Page 9 

 

7Gs peak, 11 msec 
(retries may be occur) 

50 Gs peak, 11 msec 

55 dBA maximum 
(measured at operator 
position, per ISO 7779) 

— 

2.5 Gs peak, 11 msec 

100 Gs peak, 11 msec 

 

The STT3401A is designed for maximum reliability and data integrity. The following 
table summarizes the reliability specifications. 

Non-recoverable (hard) error rate 

< 1 in 10

17

 bits 

Correctable (soft) error rate 

< 1 in 10

7

 bits 

Error recovery and control 
methods 

Write Equalization; 
Data Randomization; 
Retry on read; 
Reed-Solomon Error Correction Code 

Mean-Time-Between-Failures 
(MTBF) 

More than 200,000 hours (20% duty rate) 

Mean-Time-To-Repair (MTTR) 

Less than 0.5 hour 

The Mean-Time-Between-Failures (MTBF) is greater than 250,000 hours. This 
specification includes all power-on and operational time but excludes maintenance 
periods. Operational time is assumed to be 20% of the power-on time. Operational 
time is the time the tape is loaded. 

Note:  Seagate does not warrant the stated MTBF as representative of any 

particular unit installed for customer use. The failure rate quoted here is 
derived from a large database of test samples. Actual rates may vary from 
unit to unit. 

The Mean-Time-To-Repair (MTTR) is the average time required by a qualified 
service technician to diagnose a defective drive and install a replacement drive. The 
MTTR for the drive is less than 0.5 hour (30 minutes). 

Seagate Travan drives are field-replaceable. If a problem occurs with a subassembly 
or component in the drive, the entire unit should be replaced. The faulty drive should