Руководство Пользователя для Spectra Logic spectra t120

Appendix D.  Specifications

196

The LTO-4 tape drive can read and write the LTO-3 tapes, and read LTO-2 tapes. The 
LTO-4 tape drive supports data encryption, with minimal latency to permit encryption 
set-up. However, the rate at which data is transferred from the host is not affected, 
since the encryption and decryption capability resides in the drive. 

The BlueScale Encryption and key management interface support for LTO-4 drive 
encryption is documented in the BlueScale Encryption User Guide. If you choose not to 
use BlueScale key management with LTO-4 encryption, you can only take advantage of 
LTO-4 drive-based encryption using a key management application (if any are 
available) that runs on a separate host, and that supports LTO-4 encryption.

a. All specifications are subject to change without notice.

Tape Capacity

 b

 

b. Compression thoughput and capacity depend on the type of data.

800 GB native (1600 GB compressed)

MTBF

250,000 hours at 100% duty cycle

Average File Access Time 

65 seconds

Uncorrectable Error Rate

1 x 10

-17

 bits

Sustained Transfer Rate

SCSI: 70 MB/sec native (140 MB/sec compressed); 

504 GB/hour

Fibre Channel: 120 MB/sec native (240 MB/sec compressed); 864 GB/h

Burst Transfer Rate 

c

c. The actual burst data transfer rate is limited by the performance of the host adapter, the interface controller, and the 

buffer control of the drive.

SCSI: 160 MB

2

/sec

Fibre Channel: 400 MB

2

/sec

Power Consumption

SCSI: 26 watts typical read/write
Idle--9.5w

Fibre Channel: 29.5 watts typical read/write
Idle - 12.5w