Adaptec AHA-1520A Manual de Serviço descarregar pdf (Página 315)

100

101

SunOS 5.5 Devices st(7D)

Since some applications may perceive write buffering as a potential data integrity prob-

lem, this feature is disabled by default and needs to be explicitly enabled in the conﬁg

entry and turned on by means of the property in st.conf. Furthermore, some fault

tolerant backup servers make assumptions about the data buffering in the tape drive

itself. These assumptions may not be valid if write buffering has been enabled.

Write buffering may be superseded by other performance enhancements in a future

release.

FILES /kernel/drv/st.conf

driver conﬁguration ﬁle

/usr/include/sys/mtio.h

structures and deﬁnitions for mag tape io control commands

/usr/include/sys/scsi/targets/stdef.h

deﬁnitions for SCSI tape drives

/dev/rmt/[0− 127][l,m,h,u,c][b][n]

where l,m,h,u,c speciﬁes the density (low, medium, high,

ultra/compressed), b the optional BSD behavior (see mtio(7I)), and n the

optional no rewind behavior. For example, /dev/rmt/0lbn speciﬁes unit 0,

low density, BSD behavior, and no rewind.

For 1/2” reel tape devices (HP-88780), the densities are:

l 800 BPI density

m 1600 BPI density

h 6250 BPI density

c data compression

(not supported on all modules)

For helical-scan tape devices (Exabyte 8200/8500/8505):

l Standard 2 Gbyte format

m 5 Gbyte format (8500, 8505 only)

h,c 5 Gbyte compressed format (8505 only)

For 4mm DAT tape devices (Archive Python):

l Standard format

m,h,c data compression

For QIC-150 tape devices (Archive Viper):

l QIC-150 Format

m QIC-150 Format

h QIC-150 Format

c QIC-150 Format

For QIC-24 tape devices (Emulex MT−02):

l QIC-11 Format

m QIC-24 Format

h QIC-24 Format

c QIC-24 Format

modiﬁed 30 Aug 1995 7D-311

1 2 ... 310 311 312 313 314 315 316 317 318 319 320 ... 433 434

Comentários a estes Manuais

Sem comentários

Adaptec AHA-1520A Manual de Serviço Página 315

Comentários a estes Manuais

Manuais e produtos relacionados com Software Adaptec AHA-1520A