15
3.0 Ensure Drive Integrity
A key component to ATTO’s DriveAssure™ technology is the ATTO FastStream’s “Initialize and Verify drive”
feature which discovers and remaps bad sectors on drives, providing reliable media for your RAID Groups.
Before creating any RAID Group you should Initialize
and Verify the drives you want in the RAID Group to
ensure drive integrity. When selected, the FastStream
writes a pattern to the entire drive, verifying the drive’s
readiness and reliability.
CAUTION
CAUTION
Selecting Drive Initialization causes all
previous storage data on the drive to be
erased. Make sure all of your information is
backed up before initializing drives.
During initialization and verification, the FastStream
collects performance measurements. Performance
data is available once initialization begins. You may
view it from the
Drive Performance and Health
page accessible from the
Diagnostics
menu. This
performance data is lost when the controller is
powered off.
If you do not want to initialize or verify drives now,
continue on to
Configure Storage into RAID Groups
on page 21.
Check drive integrity after you have created RAID
Groups on drives which you wish to add to your
FastStream configuration. This can be accomplished
by using the
Initialize and Verify
procedure or a read-
only scan of drives.
The
Read-Only Drive Test
performs a non-
destructive scan over the entire surface of each drive
to identify bad areas of disk drives and determine read
performance. It may be run while data is passing
through the FastStream.
Running this test may negatively impact performance.
Once the
Read-Only Drive Test
has completed,
system operation returns to normal.
Before creating RAID Groups
1
If you are not already in the ExpressNAV
Storage Manager, type the IP address of your
controller in a standard browser. On the splash
screen, click
Enter Here.
In the box provided,
type in your user name and password, and click
OK
.
2
Select
Initialize and Verify Drives
.
3
Click
Next.
4
Select
Initialize and Verify Drives.
All eligible drives are highlighted in green; the
system only initializes highlighted drives.
5
Click
Commit
.
CAUTION
CAUTION
Do not restart the FastStream or
disconnect or power cycle drives during
Drive Initialization and Verification or you
must start the verification process from the
beginning.
6
A warning box appears. In the warning box,
verify that you want to complete the
configuration by clicking on
Yes
. Clicking on
No
ends the procedure without making a change.
7
When the process is complete, the
Performance
tab, in the
Drive Performance
and Health
page, appears.
The drive(s) selected are now initialized and verified.
All data on the highlighted drives has been erased and
you may continue with
