UltraTrak SX4000, SX8000 & RM8000 User Manual
18
How to Manually Create an Array
1. Ensure that the UltraTrak power is off.
2. Install the disk drives into the UltraTrak and lock the Drive Carrier lever.
3. Switch the power on and wait about one minute for the UltraTrak to
initialize.
4. Press
the
SEL
button on the front panel.
5. Press button once to select
Configuration
, then press
SEL
button.
6. Enter the password at the prompt (see Enter Password on page 15).
7. At
Configure Array
, press
SEL
.
8. Press button twice to select
Define Array
, then press
SEL
.
9. With
RAID Level
selected, press
SEL
.
10. Use the and button to select the proper RAID level for your array,
press
SEL
to choose the selected RAID level. See Choosing a RAID level
on page 21 for help in choosing the proper RAID level.
Note
If you wish to make a RAID 0+1 array using 4, 6, or 8 drives you need to
choose RAID 1 (mirroring) and then follow the steps below to create the
array.
11. Press
SEL
to assign
Stripe Block Size
. 64KB is the default value and is
optimum for most applications. Choosing the proper
Stripe Block Size
facilitates efficient data flow. You might want to choose a different value if
you know the size of the cache buffer in your hard drives or the average
data block size of the data you retrieve. See Choosing Stripe Block Size on
page 20 for more information.
12. Press button to choose the
Gigabyte Boundary
feature. Press
SEL
to
toggle between
Gigabyte Boundary ON
and
Gigabyte Boundary OFF
.
The size of the array is always restricted by the size of the lowest capacity
disk drive.
Gigabyte Boundary ON
(recommended) causes the size of the
array to be rounded down to the nearest whole gigabyte.
Gigabyte
Boundary OFF
does not round off the size of the array. (For example:
Enabled—1.6GB = 1GB; Disabled—1.6GB = 1.6GB.) See Gigabyte
boundary on page 20 for more information.
Note
The Gigabyte Boundary feature is only available for RAID levels 1, 0+1,
3, 5, 30 and 50.