User manual

SuperTrak SX6000™ User Manual Chapter 3
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Array Menu” screen will appear after you have pressed [Ctrl-Y]. You will see
the array defined. You may [ESC] to exit and return to the “Main Menu” of
SuperBuild
Setting the Initialize Function
For RAID 5 arrays, SuperTrak SX6000 will allow you to toggle the “Initialize”
“ON” or “OFF”. The default is “ON”. To toggle “Initialize”, use the [Arrow] keys
to highlight the field and the [Spacebar] to toggle between “ON” and “OFF”.
Setting the Gigabyte Boundary
For RAID 5 arrays, SuperTrak SX6000 will allow you to toggle the “Gigabyte
Boundary” “ON” or “OFF”. The default is “ON”. To toggle “Gigabyte
Boundary”, use the [Arrow] keys to highlight the field and the [Spacebar] to
toggle between “ON” and “OFF”.
Creating a Spanning Array
In the “Define Array Definition Menu” section, use the [Spacebar] to cycle through array
types and select “JBOD” for RAID Level. You will be joining the drives you assign to this
array together as a single virtual drive grouping. Data will be stored to the first drive
until it is physically full. SuperTrak SX6000 then will save data on to the next drive in
sequence. Each member of an array will no longer be readable as an independent drive
if removed from the array. The capacity of the Spanning array will equal the total
capacity of all drives assigned.
NOTE: Since spanning uses the full capacity of each assigned drive, different capacity
drives may be used without adversely affecting the performance of the array. No other
RAID benefits are provided (see Chapter 0).
Assigning Drives to a Spanning Array
Under the “Drive Assignments” section, highlight a drive, and, with the
[Spacebar], change the “Assignment” option to “Y” to add the drive to the
Spanning array. Press [Ctrl-Y] to save the disk array information. The initial
“Define Array Menu” screen will appear after you have pressed [Ctrl-Y]. You
will see the array defined. You may press the [ESC] key to exit and return to
the “Main Menu” of SuperBuild.
Creating a Single Drive Array
A single drive may be made a RAID 0 array. Follow the procedure for creating a RAID
on page 19.
Hot Spare Drives
Any extra drive (designated as “Free” in the SuperBuild “View Drive Assignments”
screen) that is not assigned to a fault tolerant disk array (RAID 1, 0+1, 3, or 5) will be
recognized as a Spare Drive. Such a drive is automatically added to an array once a
disk member of the array has been detected as “failed.” To restore fault tolerance as
quickly as possible, SuperTrak SX6000 begins to perform an automatic data rebuild on
the “spare” drive in the background without the need to restart the system. At a later
time, the failed drive can be physically removed and an extra drive added in its place to
function as the “spare” drive.