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Operating the Web Control Panel
Cybernetics
UM-MV-86-B1-0801
Messages Tab
The “Messages” tab reports disk accessibility and reading/writing errors, which indi-
cates possible disk drive failure.
This tab also reports the completion status of UM-MV-86 copy operations. After a
copy to a virtual or physical tape completes, the “Messages” tab will update with a
report indicating statistics such as tape usage, error rate and transfer rate information
(See Figure 3-60).
An asterisk on the “Messages” tab label indicates a new message has been reported.
USB offload
Up to two USB disk drives may be plugged in simultaneously using the USB ports on the
front of the chassis. USB disk drives may be hotplugged while the unit is running; the firm-
ware will detect the disk drive and start using it automatically. There is no need to power
down the unit or rescan for devices. USB disk drives may also be hot unplugged; how-
ever, to prevent data loss, the user should click the ‘Remove disk' button in the Java
applet first.
Offloading a Virtual Tape to a USB disk has a speed averaging about 28 MB/s. Restoring
from a USB disk drive must be done through the miSAN-V-Series; no other software
understands the format of the data on the disk.
Virtual Tapes on USB disk drives may be treated like any other virtual tapes as long as
the USB drive remains plugged in. You can assign a USB Virtual Tape to a virtual tape
drive or virtual stacker, mount it, do a backup or restore, or even offload from USB to
physical tape.
USB disks are intended for offloading Virtual Tapes rather than being used as primary
storage, so the HSTC treats USB disks slightly differently than other disks. A USB disk
will show up in the Java applet under the physical device tree with its own panel of infor-
mation and controls, just like a physical tape drive would. The control panel shows the
Virtual Tapes that are on the USB disk and indicates if they are idle or busy. There are
three control buttons:
Figure 3-60 “Messages” Tab
Figure 3-61 New Message Indicator
Содержание miSAN-V6
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