OWC Mercury Pro Guida

MERCURY RACK PRO

Assembly Manual & User Guide

INTRODUCTION

1.1 Minimum System Requirements ................................................. 1

1.1.1 Apple Mac Requirements

1.1.2 PC Requirements

1.1.3 Supported Hard Drives

1.2 Package Contents ...................................................................... 1

1.3 About This Manual...................................................................... 2

1.4 Front View ................................................................................... 2

1.4.1 Buttons

1.4.2 LED Indicators

1.5 Rear View.................................................................................... 2

1.5.1 Connection

1.5.2 Usage Notes

1.5.3 RAID Selector Switches

1.6 Pre-congured Solutions............................................................ 4

1.7 RAID Settings.............................................................................. 4

1.7.1 Changing the RAID mode

1.7.2 RAID Mode Descriptions

DEVICE SETUP

2.1 Drive Installation.......................................................................... 6

2.1.1 Adding Drives to an Existing RAID Set

2.1.2 Adding Drives to Independent mode (Clear RAID)

2.2 Replacing Drives......................................................................... 7

SUPPORT RESOURCES

3.1 Rack / Desktop Conversion ........................................................ 8

3.2 Formatting .................................................................................. 8

3.3 Unmounting Drives ..................................................................... 8

3.4 About Data Backup .................................................................... 8

3.5 Troubleshooting .......................................................................... 9

3.6 Online Resources ....................................................................... 9

3.7 Contacting Technical Support .................................................... 9

CONTENTS

OWC Mercury Rack Pro Table of Contents

OWC Mercury Rack Pro Introduction

1.1 Minimum System Requirements

1.1.1 Apple Mac Requirements

»eSATA: OS X 10.3-10.11.6 | macOS 10.12 or later

»FireWire: OS X 10.2-10.11.6 | macOS 10.12 or later

»USB 3.1 Gen 1 (supports USB 2.0): OS X 10.6-10.11.6 | macOS 10.12 later

1.1.2 PC Requirements

»eSATA: Windows XP or later

»FireWire: Windows XP or later

»USB 3.1 Gen 1 (supports USB 2.0): Windows XP or later

1.1.3 Supported Hard Drives

»Up to four 3.5” SATA drives (1.5Gb/s, 3.0Gb/s, or 6.0Gb/s)

»Identical model drives are required for all RAID modes. Clear RAID

(Independent) and Combine (SPAN) do not require identical drives.

1.2 Package Contents

FireWire 800

(1394b) cable

eSATA cable

Desktop feet

with Phillips screws (4)

Rack handles (2)

USB 3.1 Gen 1

(Standard-A to

Standard-B) cable

Power cable

FireWire 400

(1394a) cable

Phillips screws for

rack handles (8)

Bumpers for rack

handle screw holes (2)

OWC Mercury Rack Pro

INTRODUCTION

OWC Mercury Rack Pro Introduction

1.3 About This Manual

The images and descriptions may vary slightly between this manual and the

unit shipped. Functions and features may change depending on the rmware

version. Please visit the product web page for the most current information.

OWC’s Limited Warranty is not transferable and subject to limitations.

1.4 Front View

1.4.1 B ut to ns

The Power button and SET/MUTE

buttons are behind the front cover on

the left side. The SET/MUTE button

is used for setting the RAID mode

(see Section 1.7) and disabling the

audible alarm if there is a drive failure.

1.4.2 LED Indicators

Power:

»OFF = power o

»Blue = power on

»Pink = power on (advanced format drives)

Access:

»Blinking purple = drive being accessed

Rebuild:

»Blinking red = RAID array being rebuilt

»Solid red = faulty drive

1.5 Rear View

1. Power Input

2. eSATA port

3. USB 3.1 Gen 1 port

4. FireWire 400 port

5. FireWire 800 ports

6. RAID Mode switches

1 2 3456

OWC Mercury Rack Pro Introduction

1.5.1 Connection

1. Plug the power cable into the wall and into the OWC Mercury Rack Pro.

2. Connect the approriate eSATA, FireWire 800, FireWire 400, or USB 3.1

Gen 1 cable into the Rack Pro and computer (eSATA or USB 3.1 Gen 1

interfaces are recommended for maximum performance).

1.5.2 Usage Notes

»Only one interface (eSATA, FW800, FW400, USB 3.1 Gen 1) at a time can

be used. When more than one interface cable is connected, the fastest

interface has priority.

»For the safe removal of your drive and to assure that no data is lost, always

unmount the drive from your operating system before powering o and

ejecting the drive. See Section 3.3 for more information.

»For the computer to access volumes larger than 2TB, the operating

system must support large volumes (i.e. Windows Vista and later or Mac

OS X 10.4 and later).

»If one of the fans in the Mercury Rack Pro fails, an alarm will sound. The

“Fan Alarm Mute” button located on the rear panel (highlighted below

in green) will mute the alarm. It is recommended that you replace the

failed fan as soon as possible in order to adequately cool the unit, thus

preventing damage to components and avoiding potential data loss.

1.5.3 RAID Selector Switches

There are three RAID Mode switches

on the back of the Mercury Rack Pro

(highlighted in blue) that are used

to change the RAID mode. Use the

silkscreen above the switches as

a guide (highlighted in red) when

changing the RAID mode.

Section 1.7 provides additional details about working with RAID modes.

OWC Mercury Rack Pro Introduction

1.6 Pre-congured Solutions

If your Mercury Rack Pro included hard drives, they have been pre-congured

as a RAID 5 volume — that volume has been pre-formatted. If you need drive

installation tips, please see Section 2.1. Formatting tips for Mac and PC can

be found in Section 3.2.

1.7 RAID Settings

1.7.1 Changing the RAID Mode

IMPORTANT: Identical model drives (make, model, capacity, rmware) are

required for all RAID modes. Clear RAID (Independent) and Combine (SPAN) do

not require identical drives. Additionally, changing the RAID mode requires you to set

the Rack Pro to “Clear RAID” mode between each mode change.

To switch or clear RAID modes, follow the three steps below.

1. With the Rack Pro powered o, adjust the switches on the back of the unit

to Clear RAID to either clear the previous mode, or to immediately change

to Independent mode.

2. Press and hold the SET/MUTE button on the front of the enclosure and

power on the Rack Pro. Keep holding the button down until you hear a full

beep. The lights on the Rack Pro will also ash during this process and will

stop ashing when complete.

3. After the Rack Pro’s RAID mode has been cleared, power o again if you

do not wish to use Independent mode. Change the switches to reect

your desired RAID mode and then repeat Step 2. Once the LED ashing

stops the new RAID volume is ready to be formatted. See Section 3.2 for

more information on formatting.

1.7.2 RAID Mode Descriptions

Clear/JBOD (Independent Drive) Mode

Switch setting: DOWN-DOWN-DOWN

Each drive will appear as a single volume. If you intend to use hard drives of

diering capacity and model, this is the mode to use. To swap or replace drives,

rst unmount all drives and power the OWC Mercury Rack Pro o.

WARNING: Changing the RAID setup will require you to reformat the

drives. Reformatting will delete all of the existing data on the drives!

OWC Mercury Rack Pro Introduction

Combine (SPAN) Mode

Switch setting: UP-DOWN-UP

The drives appear as one large volume. The total capacity depends on the drives

used; you can use dierent capacities. Combine (SPAN) is an array (but not a

RAID) in which the data is written sequentially across the drives. This combines

the drives’ capacities, but provides no performance or data redundancy benets.

RAID 0 “Drive Striping” Mode

Switch setting: UP-UP-UP

The drives appear as one large volume with a size equal to the combined

capacities of all the drives in the array. RAID 0 is used when speed is the primary

objective, but it does not provide any type of data protection. Data is alternated

very quickly across two or more drives to gain speed by distributing the workload.

This allows for the fastest data transfer rates, since data is written without pausing

to check parity information. However if one drive fails, the whole array can become

corrupted and data will be lost. Always maintain a backup of your data!

RAID 1 “Drive Mirroring” Mode (2 Drives Installed)

Switch setting: UP-UP-DOWN

The drives appear as one volume with a size equal to the capacity of one installed

drive. RAID 1 copies (or “mirrors”) a set of data from the rst drive to the second

drive. This is useful when reliability and backup are more important than capacity

or speed. If one drive fails, it can be replaced and the data rebuilt.

RAID 10 “Drive Mirroring with Striping” Mode (4 Drives Installed)

Switch setting: UP-UP-DOWN

The drives appear as one volume with a size equal to the combined capacities of

half of the drives in the array. RAID 10 uses a combination of striped and mirrored

volumes. If one drive fails, it can be replaced and the data rebuilt.

RAID 3 “Drive Striping with Dedicated Parity” Mode

Switch setting: UP-DOWN-DOWN

The drives appear as one volume with a size equal to the combined capacities of

all the drives in the array, minus one drive. RAID 3 uses byte-level striping, with

parity information located on a dedicated parity drive. Very fast performance can

be achieved with RAID 3 while also maintaining fault protection, so if one drive

fails, it can be replaced and the data rebuilt.

RAID 5 “Drive Striping with Distributed Parity” Mode

Switch setting: DOWN-UP-DOWN

The drives appear as one volume with a size equal to the combined capacities of

all drives in the array, minus one drive. RAID 5 uses block-level striping with parity

data distributed across all disks. It provides a good balance between performance

and data integrity. If one drive fails, it can be replaced and the data rebuilt.

OWC Mercury Rack Pro Device Setup

2.1 Drive Installation

NOTE: If you purchased a Rack Pro pre-congured with drives, they will be color-

coded. Please match the color on each drive to the corresponding drive bay.

Blue - Green - Yellow - Red -

Drive Installation Steps:

1. Open the front cover on the OWC

Mercury Rack Pro.

2. Install the rst drive as shown at right,

with the SATA connector facing away

from you.

3.Slide the drive all the way into the drive

bay. When properly seated, it should

sit ush with the aluminum frame.

4.Repeat the previous steps for each

drive you are installing.

NOTE: Be careful to not damage any components — do not force the drives into

place. If they do not slide and seat in easily, make sure there are no obstructions.

2.1.1 Adding Drives to an Existing RAID Set

Note that It is not possible to add more drives to an existing RAID array or change

the RAID conguration without reformatting. In order to add more drives, the

existing RAID must rst be cleared using Steps 1 and 2 in Section 1.7.1. After

clearing the RAID, a new RAID set may be created including any additional drives.

2.1.2 Adding Drives to Independent mode (Clear RAID)

You can remove any drive from a Clear RAID set and replace it with another drive.

IMPORTANT NOTE: To avoid data corruption it is essential to unmount all drives

and power the unit o before removing or adding a new drive. If you physically

eject or remove a drive from the Rack Pro without powering o the unit rst, any

mounted drives will improperly unmount from the computer.

DEVICE SETUP

OWC Mercury Rack Pro Device Setup

2.2 Replacing Drives

If a drive fails, the corresponding activity LED will display as solid red and

the alarm will sound. To disable the alarm, press the “Set/Mute” button once

(see Section 1.5.3). If only one drive is defective and the RAID mode is set

to RAID 1, 3, 5, or RAID 10, the data can still be accessed, but it is strongly

suggested that you replace the faulty drive mechanism immediately with an

identical drive to assure continued data safety.

To remove the drive from the enclosure, use the lever located above the drive

to eject the drive mechanism (shown above). If more than one drive fails at

the same time, or if one drive fails and the RAID mode is set to RAID 0 or

Combine (SPAN) mode, the data is lost and the system cannot be accessed

again until the drive(s) are replaced and a new array is built. Note that when

using a SPAN, only the data stored on the failed drive is lost.

1. Check the LED and replace the faulty drive. The red LED indicates the

defective drive. You do NOT need to power the enclosure o to do this.

2. For RAID 1, 3, 5, and RAID 10, the RAID array will be rebuilt automatically.

During the rebuild process, the drive LED will ash red. Rebuilding the

RAID array will take several hours to days, depending on drive capacity.

Once the rebuild is complete, the LED will turn o or ash red with activity.

Power cycle the rack enclosure to return the LED to normal operation.

3. For RAID 0 and Combine (SPAN) modes, the corresponding LED will turn

blue, showing that the defective drive has been replaced and a good drive

is inserted into the bay. You will need to clear and reset your RAID. See

Section 1.7.1 for more details.

Notes:

»While the data from a failed SPAN drive is usually not recoverable, the data

on the good drive(s) often will be recoverable.

»We recommend not turning the power o during the rebuild process.

However, if power is interrupted the data should continue rebuilding as

soon as the power is restored. The OWC Mercury Rack Pro does not need

to be connected to a computer for the rebuild process to take place.

OWC Mercury Rack Pro Support Resources

3.1 Rack / Desktop Conversion

The OWC Mercury Rack Pro comes with two rack handles to enable rack-

mounted congurations. Four rubber feet are also included for use in a

desktop environment. Use a Phillips screwdriver to install either the handles

or feet, depending on how you intend to use the enclosure. Two padded

bumpers are included to cover the screw holes that are not used by the rack

handles when the enclosure is congured as a desktop solution.

3.2 Formatting

To review our formatting tips please visit: www.owcdigital.com/format

3.3 Unmounting Drives

For the safe removal of your drive and to ensure that no data is lost, always

eject or unmount the corresponding disk(s) from your operating system

before powering o. Choose a method below to safely unmount your disk(s).

Mac:

»Drag the icon for the disk you wish to unmount to the trash can; OR

»Right-click the disk icon on the desktop, then click “Eject”; OR

»Highlight the disk on your Desktop and press Command-E.

PC:

1. Go to the System Tray (located in the lower right corner of your screen).

Click on the “Eject” icon (a small green arrow over a hardware image).

2. A message will appear, detailing the devices that the “Eject” icon controls,

i.e., “Safely remove...” Click on this prompt.

3. You will then see a message that says, “Safe to Remove Hardware.” It is

now safe to disconnect the Mercury Elite Pro Dual from the computer.

3.4 About Data Backup

To ensure your les are protected and prevent data loss, we strongly suggest

that you keep two copies of your data: one copy on your OWC Mercury

Rack Pro and a second copy on either your internal drive or another storage

medium, such as an optical backup, or on another external storage unit. Any

data loss or corruption while using the OWC Mercury Rack Pro is the sole

responsibility of the user, and under no circumstances may OWC, its parent,

partners, aliates, ocers, employees, or agents be held liable for loss of

the use of data including compensation of any kind or recovery of the data.

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