OWC RACK PRO MINI-SAS Leitfaden

RACK PRO MINI-SAS

Assembly Manual & User Guide

Introduction.................................................................................................... 1

1.1 Minimum System Requirements

1.1.1 Apple Mac Requirements

1.1.2 PC Requirements

1.1.3 Supported Hard Drives

1.2 Package Contents

1.3 About This Manual

1.4 Rear View

1.5 Front View

1.6 About RAID modes

Device Setup................................................................................................. 4

2.1 Drive Installation

2.2 Connections

2.3 Replacing Drives

2.4 Desktop Conversion

Support Resources .................................................................................. 7

3.1 Formatting

3.2 Unmounting Drives

3.3 Troubleshooting

3.4 About Data Backup

3.5 Contacting Technical Support

CONTENTS

OWC Rack Pro mini-SAS Table of Contents

OWC Rack Pro mini-SAS Introduction

1.1 Minimum System Requirements

1.1.1 Apple Mac Requirements

The system requirements for Mac depend on the mini-SAS (PCIe) card you are using.

Please check the specications of the controller card to determine system requirements.

1.1.2 PC Requirements

The system requirements for PC depend on the mini-SAS (PCIe) card you are using.

Please check the specications of the controller card to determine system requirements.

1.1.3 Supported Drives

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

• For RAID setups, identical drives are required (make, model, capacity,

rmware)

IMPORTANT:

Cables longer than 1 meter cannot be used with 6.0Gb/s hard drives.

1.2 Package Contents

1. Power cable

2. Rack mounting handles

3.Desktop mounting feet

4.Screws for desktop conversion

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 recent product specications.

INTRODUCTION

OWC Rack Pro mini-SAS Introduction

1.4 Rear View

1.5 Front View

LED Color Codes:

Power

O = Power o

Blue = Power on (all 4 drive bays)

Drive Access

Flashing Red = Drive being accessed

Array Rebuild

Blinking Red = Rebuilding RAID array

Solid Red = Faulty drive

Power Input External mini-SAS Port

Power Button - located on the left side

of the enclosure, behind the access

door (pictured below).

LED Indicators

OWC Rack Pro mini-SAS Introduction

1.6 About RAID Modes

The Mercury Rack Pro mini-SAS does not ship with built-in RAID capabilities,

however many mini-SAS PCIe cards have RAID controller functionality built into

them. The number and type of RAID modes available are entirely dependent upon

the card you use. Please consult the manufacturer’s documentation for more

information about the capabilities of your specic card. The information below

describes a few of the more commonly used RAID modes.

RAID 0 (“Drive Striping”) — 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; it does not provide data redundancy. Data

is distributed across two or more drives and is written and read without pausing to

check parity information. This greatly improves the speed but 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”) — The drives appear as one volume with a size

equal to the capacity of a single 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

redundancy are more important than capacity or speed. When one drive fails, it

can be replaced and the data will be rebuilt.

RAID 10 (“Mirrored Stripes”) — 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 5 (“Stripe with Parity”) — 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 Rack Pro mini-SAS Device Setup

2.1 Drive Installation

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

using the colors below. Please match the color on each drive to the corresponding

drive bay.

BLUE - GREEN - YELLOW - RED -

Drive Installation Steps:

1. Open the front cover.

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.

Important Notes:

• Do not force the drives into place. If they do not slide and seat easily, make sure

there are no obstructions.

• It is not possible to add more drives to an existing RAID array or change the RAID

conguration without reformatting.

• 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 disks will

improperly unmount from the computer.

DEVICE SETUP

OWC Rack Pro mini-SAS Device Setup

2.2 Connections

1. Plug the power cable into an active wall outlet and then into the Rack Pro. The

voltage will be set automatically.

2. Connect the mini-SAS port to the controller card.

CAUTION:

• Do not cover the enclosure’s ventilation holes.

• Do not connect the device to your computer until the drives are installed.

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

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

2.3 Replacing Drives

If one of the drives fails, its activity

LED will display solid red. We

strongly suggest you immediately

replace any failing drive.

To remove the hard drive from the

enclosure, rst unmount the drive

from your system, then pull the lever

located above the hard drive to eject

it (right).

NOTE: some RAID modes allow the data on the array to remain accessible if a

single drive within that array fails. If more than one drive fails at the same time,

or if one drive fails and the RAID mode you have chosen does not support data

redundancy, data will be lost. CAUTION: always have a separate backup of your

data when using non-redundant modes like RAID 0!

Consult your RAID controller documentation for additional steps that may be

required to preserve data and replace drives, when using dierent RAID modes.

Power Input External mini-SAS Port

OWC Rack Pro mini-SAS Device Setup

2.4 Desktop Conversion

The OWC Mercury Rack Pro can be converted from a rack mounted enclosure to

a desktop unit by removing the rack handle from the sides of the enclosure and

attaching the included rubber feet.

To remove the rack handles simply remove the four Phillips screws on the side of

the rack and the rack handle will come o, as shown below.

Once you have removed the rack handles, turn the OWC Mercury Rack Pro over

and attach the four rubber feet using a Phillips screwdriver to the bottom of the

enclosure.

OWC Rack Pro mini-SAS Device Setup

3.1 For mat ting

For our recommended drive formatting techniques, please visit:

www.owcdigital.com/format

3.2 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.

You can use the methods described below to safely unmount your disk(s).

Mac OS X:

Each of the methods below will produce the same result.

• Drag the icon for the disk you wish to unmount to the trash can.

• Right-click the disk icon on the desktop, then click ‘Eject’.

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

Windows:

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.

3.3 Troubleshooting

Many problems can be traced to power or connectivity issues. Begin

troubleshooting by verifying that the Rack Pro mini-SAS is connected to power. If

connected to a power strip, make sure that it is switched on and that there are no

bad outlets on the strip. If power issues persist try plugging the Rack Pro directly

into an active wall outlet.

It is also important to verify that your mini-SAS cable is fully plugged into the

computer and Rack Pro. If the cable connections are snug and the Rack Pro is still

not working properly, please see Section 3.5 to contact Technical Support.

SUPPORT RESOURCES

OWC Rack Pro mini-SAS Device Setup

3.4 About Data Backup

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

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

Pro mini-SAS 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 Rack Pro mini-SAS is the sole responsibility of

the user, and under no circumstances may OWC, its parents, 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.

3.5 Contacting Technical Support

HOURS OF OPERATION

8am - 8pm (CT) Monday - Friday

(866) 692-7100 (North America only)

+1 (815) 338-8685 (International)

Live chat is available during normal business hours at:

www.owcdigital.com/support

Email support is available at:

www.owcdigital.com/support

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