Secure Digital (Sd) Card - Allied Telesis x900-48FE Hardware Reference Manual

Hardware Reference
Inserting and
removing an SD card
Displaying data
about an SD card
C613-03092-00 REV J

Secure Digital (SD) Card

Secure Digital cards are a memory expansion option for the following switches:
AT-9924Ts
■
x900-12XT/S
■
x900-24XT
■
x900-24XT-N
■
x900-24XS
■
SwitchBlade x908
■
Data such as releases and configurations can be stored on SD cards, and files
can be manipulated with the command line interface (CLI). On switches
running the AlliedWare Plus operating system, you can boot from an SD card
using the Bootloader menu. However, under normal operating conditions you
cannot run release or package files directly from the SD card; they must be
loaded into NVS or on-board flash.
SD cards are smaller than CompactFlash cards and have a large storage
capacity. Switches accept most SD cards with various capacities up to 2 GBytes.
Be sure to verify operation before attempting to store data.
Important Do not keep sensitive data on SD cards because anyone with a
compliant reader can read them.
You can insert a card into the SD slot at any time. Just push the card into the
slot until you feel it latch.
When data is being written to or read from the card, the SD LED on the front
panel of the switch flashes green. Do not remove the card when it is active or
you will corrupt the data being read or written, and may corrupt other data on
the card. Wait until the LED remains off before releasing the card. To remove
the card, use a press-and-release action. Avoid touching the metal contacts.
To safeguard the data, store the card immediately in its case or somewhere
away from heat, humidity, or dust. Do not store it near electrostatic,
electromagnetic, magnetic or radioactive fields. If necessary, clean with a soft
dry cloth.
To display information about an SD card, such as card size, file count, and
volume label, insert the card.
On switches running the AlliedWare operating system, use the command:
show card
The following figure is an example of output from the show card command.
Volume label .........
Files total size .....
Used space ...........
Free space ...........
Total space ..........
You can also use the show card command to verify whether the switch
recognises the card. For more information about this command, see the
SD_512
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