CRU Dataport RTX Secure 410-QR Manual do utilizador - Página 4

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2.1 Summary of RAID Levels

The RTX Secure 410-QR supports RAID Levels 0, 1, 3, 5, and 10.
RAID Level 5 is most commonly used by those seeking an optimal
balance of speed and data safety.
RAID Features and Performance
RAID
Description
Level
Also known as striping. Data distrib-
0
uted across multiple drives in the
array. There is no data protection.
Also known as mirroring. All data
replicated on two separate disks. This
is a high availability solution, but due
1
to the 100% duplication, only half
the total disk capacity is available for
data storage.
Also known as Bit-Interleaved
Parity. Data and parity information
is subdivided and distributed across
3
all disks. Parity must be equal to the
smallest disk capacity in the array.
Parity information normally stored on
a dedicated parity disk.
Also known as Block-Interleaved
Distributed Parity. Data and parity
information is subdivided and distrib-
5
uted across all disks. Can withstand
the failure of one drive. The total
capacity of all but one of the drives is
available for data storage.
Also known as Block-Interleaved
Parity. Data is striped across two
10
separate disks and mirrored to
another disk pair.
*If both drives in either the RAID 0 or RAID 1 set fail, then the entire RAID will fail. If
only one drive in each of the RAID 0 and RAID 1 sets fail, then the RAID is preserved.

2.2 Hot Spares (Host Standby)

RAIDs 3 and 5 are the two RAIDs available with the RTX that will
support hot spares. Hot spares are connected as part of your RAID
and are switched into operation when a drive fails. In other words,
if you setup "3 + Host Standby" with your RAID 3 or 5, then the RTX
will immediately rebuild the RAID if a drive should happen to fail.
After that a new drive will need to be inserted, preferably the same
model of the drive that needs replaced.

3. Installation Steps

3.1 Hard Drive Installation
a. Pull the ejection handle on the TrayFree bay to open the bay
door.
Min.
Data
Data Transfer
Drives
Redundancy
Rate
No data
2
Very high
protection
Reads are
higher than
a single disk;
2
1 drive
Writes are
similar to a
single disk
Reads are simi-
3
1 drive
lar to RAID 0
Reads are simi-
3
1 drive
lar to RAID 0
Transfer rates
4
1 drives*
are similar to
RAID 0
b. Insert a SATA hard drive into the bay. Make sure it is label-side
up with the SATA connection on the drive inserted first toward
the rear of the enclosure.
c. Shut the bay door.
d. You can option-
ally secure each
bay door by
inserting an RTX
Key into its key
lock and turning
it 90 degrees
clockwise.
Doing so is not
necessary to operate the RTX Secure.
Sticker Card
Use the stickers on the provided sticker card to label each drive if
you plan to use Unique Encrypted Mode (see Section 3.2). This will
prevent the drives from getting mixed up when they are removed
from the bays.
3.2 Setting the Encryption Mode
The RTX Secure has three modes that determine how it handles
Security Keys. The status of the mode is determined at power up.
After the unit has been successfully mounted by the system, the
Security Key may be removed and stored in a safe location. Changing
the position of the switches on the bottom of the RTX after the unit
has successfully been mounted will also not change the mode used
at power up.
Unique Encrypted Mode
This is the most secure mode of operation. A Security Key is required
to access data, and each bay is loaded with its own unique 256-bit
security value from the Security Key. These security values are all
stored in one Security Key. Flip the left switch on the bottom panel
switch down to "Encrypted."
down to "Unique" and the right
Common Encrypted Mode
This mode allows hard drives to be located in different boxes after
the array is formatted. A Security Key is required to access data.
Each bay uses the same security value from the Security Key. Flip the
left switch on the bottom panel up to "Common" and the right switch
down to "Encrypted." The Encryption Display Common Key LED will
illuminate.
Bypass Mode
A Security Key is not required to access data. This option cannot be
used with encrypted hard drives. Flip the right switch on the bottom
panel to "Bypass." This option disables the Common/Unique switch.
The Encryption Display Bypass LED will illuminate and the drive bay
Encryption Active LEDs will remain off.
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