Volume Control With Expressraid; Create Standard Volume; Re-Initializing A Volume; Mount A Volume - ATTO Technology R30F Installation And Operation Manual

6 Volume control with ExpressRAID

Volumes are a usable quantities of storage composed of one or more partitions residing on one or more
physical drives. A standard volume creates a partition on a single drive. ATTO ExpressRAID creates,
mounts, unmounts and configures volumes in the Macintosh OS environment.
ExpressRAID is used to create new Macintosh OS
volumes from drives (except ATA drives) on any SCSI
Manager 4.3 compatible bus. Physical devices and
busses are shown in the left hand Device Window.
Macintosh OS volumes are shown in the right hand
Volume Window.
Create RAID volumes summary
1 Determine how large you want your RAID
volume to be
2 Determine what level of RAID volume you
want (striped or mirrored)
3 Select the drives to create the volume.
You may create both mirrored and stripe groups on the
same drives. Partitions separate the groups. However,
enough drive space must be available to create another
volume.
When creating Mac OS extended volumes, the volume
size must be higher than 32 MB. The application will
not allow anything smaller.
All SCSI or Fibre Channel hard drives installed on
your computer appear under their respective SCSI
busses in the device window. Next to each drive is the
amount of space available on that drive. A completely
partitioned drive has zero Megabytes of free space.
If you are not using the Auto Detection feature to
create a new volume, select any drive with available
free space from the device window by clicking on it:
you must have two drives with available space to
create a RAID volume. To select more than one drive,
hold down the shift key and click on each drive.

Create Standard Volume

To create a new Mac OS standard volume:
1 Select one or more drives from the device
window. Shift-click to select multiple drives.
2 Select the Create Standard Volume option
from the Utilities Menu (or click the Create
Standard Volume button).
3 Fill in a name for the volume. Names may be
any combination of characters up to 27
characters long and use any character
except the colon. Names may be changed
once the volume is mounted on the desktop.
4 Fill in the desired volume size (in
Megabytes).
The Max. Size in Megabytes shown in the New Volume
Window is equal to the largest possible volume (RAID
or standard). The largest RAID 0 volume is equal to
the smallest available block of free space multiplied by
the number of drives used in the RAID 0 volume.
RAID 1 volumes are all the same size.
The default setting for the desired size of the volume is
equal to the maximum size available on the disk. If you
wish to create more than one volume, set the Desired
Size to the size of the volume you wish to create. If the
desired size is less than the maximum size available on
the disk, additional free space is available to create
another volume.
5 Click OK.
6 Repeat Steps 1 through 5 for each volume
you wish to create.

Re-initializing a Volume

Initializing a volume is the last step in creating a new
volume. If a drive is not initialized, it cannot be used.
This option should be on when creating a new volume.
All data on a volume is removed when initialized.
Re-initializing a volume creates an empty volume of
the same size with the same name.
To re-initialize a volume
1 Select the volume from the volume window
2 Select Initialize Volume from the Utilities
Menu.

Mount a Volume

Mounting a volume places its icon on the desktop. The
volume can then be accessed for reading and writing
data. Volumes initialized with ExpressRAID have a
diamond shaped ATTO icon.
To mount a volume
1 Select the volume from the volume window
by clicking on it
2 Select Mount Volume from the Utilities Menu
or click the Mount button.
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