Quantum LTO 2U Betriebsanleitung Seite 228

  • Herunterladen
  • Zu meinen Handbüchern hinzufügen
  • Drucken
  • Seite
    / 264
  • Inhaltsverzeichnis
  • LESEZEICHEN
  • Bewertet. / 5. Basierend auf Kundenbewertungen
Seitenansicht 227
25-2
SCSI REFERENCE 1014826
CHAPTER 25—WRITE BUFFER (3Bh)
Be sure to heed the following cautions when issuing the WRITE BUFFER
command to update the microcode stored in the librarys flash EEPROM.
When the WRITE BUFFER command is used to update the microcode, the
following actions occur:
1.
1.1.
1. If this was not the last or only WRITE BUFFER command, the library writes
the microcode data to the buffer, returns Good status, and goes to the Bus
Free phase. Then, it waits for the next WRITE BUFFER command.
Otherwise, it goes to step 3.
2.
2.2.
2. When the library receives the next WRITE BUFFER command, it repeats
steps 1 and 2.
3.
3.3.
3. When the data from the last or only WRITE BUFFER command has been
transferred, the library disconnects from the SCSI bus.
4.
4.4.
4. The flash EEPROM is erased and reprogrammed with the new microcode.
After the flash EEPROM is programmed with new microcode, part of the
nonvolatile memory is erased. Because the cartridge inventory is stored in
this nonvolatile memory it is erased during the reprogramming process.
5.
5.5.
5. The library reconnects to the SCSI bus and returns Good status if the
command was successful.
6.
6.6.
6. A Unit Attention condition is set for all hosts. The sense data indicates that
the microcode has changed.
7.
7.7.
7. The library performs its normal power-on self test and reestablishes the
cartridge inventory.
Caution
The WRITE BUFFER command allows you to load new microcode over the SCSI
bus into the library’s flash EEPROM. It is not intended to be used for testing library
functionality (that is, do not issue this command unless you are actually loading
new microcode).
Do not load microcode from one model of library into another. (For example,
do not load microcode from an VXA-2 1x10 PacketLoader 1U into the Magnum
224, Magnum 448, StorageLibrary T24, or StorageLoader 2U LTO or vice versa.)
Be sure that the library is reserved for the initiator’s exclusive use while the WRITE
BUFFER command is executing.
Do not power off or reset the library while this command is executing.
Seitenansicht 227
1 2 ... 223 224 225 226 227 228 229 230 231 232 233 ... 263 264

Kommentare zu diesen Handbüchern

Keine Kommentare