G-Technology G-RACK 12 User Manual

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Copyrights

p. 3

Copyrights

G-Technology and G-RACK 12 are registered trademarks of Western Digital Corporation or its aﬃliates in the United States and/or other countries. Apple, Mac, Final Cut Pro, FireWire, MacBook Pro, Time Machine and the Mac logo are trademarks of Apple, Inc., registered in the U.S. and other countries. Microsoft, Active Directory, Internet Explorer, Windows, Windows Vista and Windows XP are trademarks or registered trademarks of Microsoft Corporation in the US and/or other countries. Linux® is the registered trademark of Linus Torvalds in the U.S. and other countries. Intel, Thunderbolt and the Thunderbolt logo are trademarks of Intel Corporation or its subsidiaries in the U.S. and/or other countries

Other trademarks are the property of their respective owners.

Introduction

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The G-RACK 12 is a complete Network Attached Storage (NAS) system. The G-RACK 12 uses state of the art hardware and software to provide a turnkey storage solution for today’s storage user. Conﬁguration and management is done through an easy to use web interface.

The G-RACK 12 hardware combines Intel® Xeon® processors, latest generation hard disks, high speed networking, with the G-RACK 12 software to provide a solution that is both powerful and easy to maintain.

The G-Technology NAS OS has been customized and optimized for speed, reliability and ease of use. The operating system implements the latest stable Linux® kernel combined with the powerful BTRFs ﬁle system. Features and compatibility are balanced so you get to provide a high speed solution that will work in most modern network environments.

When you install the G-RACK 12 you will get a fully operational storage system ready to use on your network.

Introduction

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About G-RACK12

The G-RACK 12 Network-Attached Storage (NAS) delivers the ultimate in high-performance, centralized storage for small-to-medium size post-production houses, ad agencies, TV/broadcast studios and in-house creative departments that use Avid Media Composer®, Final Cut Pro X®, or Adobe Premiere® software.

The G-RACK 12 brings G-Technology’s industry-leading reliability, scalability and studio-friendly technology to shared storage. Streamline demanding media and entertainment workﬂows of 4K and above with:

• A ﬂexible 12-Bay server in 48TB to 120TB capacities;

• An optional 48TB to 120TB Expansion Module;

• Seamless integration with your data network and non-linear editing (NLE) suites; and

• The latest Btrfs ﬁle system for better data protection and faster content recovery.

Key Features:

• Enterprise-grade Network-Attached Storage (NAS)

• Seamless integration with top non-linear editing suites

• Internet Small Computer System Interface (iSCSI) support for simple shared storage management over data networks

• G-Technology NAS operating system with easy-to-use workstation interface and setup Wizard

• Advanced B-tree ﬁle system (Btrfs) for superior data protection

• Scalable 12-bay server with 48, 72, 96, 120TB capacities

• Expandable to 240TB capacity with optional 120TB Expansion Module

• Up to 2000 MB/s transfer rates

• Ultra-reliable premium quality G-Technology hard disk drives

• Outstanding 5-Year limited warranty

Introduction

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Safety Notice

Please read and observe the following precautions to assure personal safety. Improper use can result in hazardous situations.

1. The G-RACK 12 operates normally in the temperature range of 0ºC–50ºC and relative humidity of 8%–90%. Please make sure the environment is well ventilated.

2. The power cord and devices connected to the G-RACK 12 must provide correct supply voltage (100W, 90–264V). If unsure, please contact the distributor or the local power supply company.

3. Do NOT place the G-RACK 12 in direct sunlight or near chemicals.

4. Unplug the power cord and all the connected cables before cleaning. Wipe the G-RACK 12 with a dry towel. Do NOT use chemical or aerosol to clean the G-RACK 12.

5. Do NOT place any objects on the G-RACK 12 during normal system operations to avoid overheat.

6. Use the ﬂat head screws in the product package to lock the hard disk drives in the G-RACK 12 when installing the hard drives for proper operation.

7. Do NOT place the G-RACK 12 on any uneven surface to avoid falling oﬀ and damage.

8. Do NOT expose the G-RACK 12 to dampness, dust, corrosive or any liquids.

9. Do NOT attempt to repair the G-RACK 12 in any occasions. Improper dissemblance of the product may expose you to electric shock or other risks. For any inquiries, please contact the distributor.

10. Do NOT use the G-RACK 12 near water, for example, in a wet basement or near a swimming pool.

11. Do NOT place any object on the power cord. Do NOT locate the G-RACK 12 where it can be stepped on or tripped over.

12. Do NOT install, use, or service the G-RACK 12 during a thunder storm. There is a remote risk of electric shock from lightning.

13. If an extension cord is used with the G-RACK12, make sure that the total ampere rating of the equipment plugged into the extension cord does not exceed the extension cord ampere rating. Also, make sure that the total rating of all products plugged into the wall outlet does not exceed the fuse rating.

14. Do NOT drop the G-RACK 12.

15. Do NOT use the G-RACK 12 outside, and make sure all the connections are indoors.

16. Never push objects of any kind into the G-RACK 12 through the chassis slots as they may touch dangerous voltage points or short out parts that could result in a ﬁre or electric shock.

17. ONLY qualiﬁed service personnel should service or disassemble the G-RACK 12.

18. If the power adapter or cord is damaged, remove it from the power outlet. Do NOT attempt to repair the power adapter or cord. Contact your local vendor to order a new one.

Introduction

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System Requirements

Any computer that will be used to access your the G-RACK 12 must meet these requirements to ensure the best use experience:

Software

• A Microsoft® Windows® or Apple Macintosh computer running one of these operating systems:

• Windows 7, 8.1, or 10, with the latest Service Pack installed

• Mac OS X 10.9, 10.10, 10.11

Supported Web browsers:

• Microsoft Internet Explorer® 11 or newer (Windows only)

• Microsoft Edge

• Apple Safari v9 newer (Windows or Mac)

• Mozilla Firefox® v42 or newer (Windows or Mac)

• Google Chrome™ v46 or newer

Hardware

• Local area network (LAN) or wireless LAN (WLAN)

• Network switch or router, with at least one available Ethernet port

• Internet connection (for remote access to server and software and ﬁrmware updates)

• Ethernet port on your computer

NOTE: Compatibility may vary depending on your computer’s hardware conﬁguration and operating system. For highest performance and reliability install the latest updates and service packs.

Getting Started

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What’s in the Box

You should inspect the box in which the G-RACK 12 was shipped and note if it was damaged in any way. If the unit itself shows damage you should ﬁle a damage claim with the carrier who delivered it.

Decide on a suitable location for the rack unit that will hold the G-RACK 12; it should be situated in a clean, dust-free area that is well ventilated. Avoid areas where heat, electrical noise and electromagnetic ﬁelds are generated. You will also need it placed near a grounded power outlet.

The G-RACK 12 must be handled with care during unpacking and installation. Drives may be damaged by rough handling, shock or vibration. Be aware of the following precautions when unpacking and installing your external storage product:

• Do not drop or jolt the drive.

• Do not move the drive while it is powered on.

• Do not use this product as a portable drive.

• Determine the area you plan on placing this device - designed for 19” data rack. Open the outer box, then open the inner box. Two people should work together to remove the device from the box. Remove the rail kit and install into the rack. Install the G-RACK 12 into the rack (or place the unit in your desired location).

• Make sure that the package is not damaged.

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Box Contents

The G-RACK 12 server including 12 bays with internal hard drives

• (2) Power cords

• (2) Bezel locking Keys

• Front bezel

• Rack rail kit

• Rail kit adapter

• Hardware QSG

• Software QSG

• 5-Year limited warranty

• 3.2. G-RACK 12 View

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Front View

Rear View

Getting Started

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G-RACK 12 Installation

Preparing for Setup

The box the G-RACK 12 was shipped in should include two sets of rail assemblies, two rail mounting brackets and the mounting screws you will need to install the system into the rack. Follow the steps in the order given to complete the installation process in a minimum amount of time. Please read this section in its entirety before you begin the installation procedure outlined in the sections that follow.

Choosing a Setup Location

• Leave enough clearance in front of the rack to enable you to open the front door completely (˜25 inches) and approximately 30 inches of clearance in the back of the rack to allow for suﬃcient air ﬂow and ease in servicing.

• This product is for installation only in a Restricted Access Location (dedicated equipment rooms, service closets and the like).

• Determine the area you plan on placing this device - designed for 19” data rack.

Warnings and Precautions

Rack Precautions

• Ensure that the leveling jacks on the bottom of the rack are fully extended to the ﬂoor with the full weight of the rack resting on them.

• In single rack installation, stabilizers should be attached to the rack. In multiple rack installations, the racks should be coupled together.

• Always make sure the rack is stable before extending a component from the rack.

• Only one chassis should be extended from the rack at a time - extending two or more simultaneously may cause the rack to become unstable.

Server Precautions

• Review the electrical and general safety precautions.

• Determine the placement of each component in the rack before you install the rails.

• Install the heaviest server components on the bottom of the rack ﬁrst, and then work up.

• Use a regulating uninterruptible power supply (UPS) to protect the server from power surges, voltage spikes and to keep your system operating in case of a power failure.

• Allow any hot plug drives and power supply modules to cool before touching them.

• Always keep the rack front door and all panels and components on the servers closed when not servicing to maintain proper airﬂow and cooling.

Getting Started

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Rack Mounting Considerations

Ambient Operating Temperature

If installed in a closed or multi-unit rack assembly, the ambient operating temperature of the rack environment may be greater than the ambient temperature of the room. The consideration should be given to installing the equipment in an environment compatible with the manufacturer’s maximum rated ambient temperature (TMRA).

Sucient Air ow

Equipment should be mounted into a rack so that a hazardous conditions does not arise due to uneven mechanical loading. These include: even ﬂoor surfaces, rack stabilizers, and making sure the server rails are level.

Mechanical Loading

Equipment should be mounted into a rack so that a hazardous condition does not arise due to uneven mechanical loading.

Circuit Overloading

Consideration should be given to the connection of the equipment to the power supply circuitry and the eﬀect that any possible overloading of circuits might have on overcurrent protection and power supply wiring. Appropriate consideration of equipment nameplate ratings should be used when addressing this concern.

Reliable Ground

A reliable ground must be maintained at all times. To ensure this, the rack itself should be grounded. Particular attention should be given to power supply connections other than the direct connections to the branch circuit (i.e. the use of power strips, etc.).

Warning! To prevent bodily injury when mounting or servicing this unit in a rack, you must take special precautions to ensure that the system remains stable. The following guidelines are provided to ensure your safety:

• This unit should be mounted at the bottom of the rack if it is the only unit in the rack.

• When mounting this unit in a partially ﬁlled rack, load the rack from the bottom to the top with

the heaviest component at the bottom of the rack.

• If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing

the unit in the rack.

• Slide rail mounted equipment is not to be used as a shelf or a work space.

Getting Started

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Installing the System into a Rack

This section provides information on installing the G-RACK 12 chassis into a rack unit with the quickrelease rails provided. There are a variety of rack units on the market, which may mean the assembly procedure will diﬀer slightly. You should also refer to the installation instructions that came with the rack unit you are using.

Separating the Sections of the Rack Rails

The chassis package includes two rail assemblies in the rack mounting kit. Each assembly consists of two sections: an inner ﬁxed chassis rail that secures directly to the server chassis and an outer ﬁxed rack rail that secures directly to the rack itself.

Installing the Inner Rail Extension

The G-RACK 12 chassis includes a set of inner rails in two sections: inner rails and inner rail extensions. The inner rails are pre-attached to the chassis, and do not interfere with normal use of the chassis if you decide not to use a server rack. The inner rail extension is attached to the inner rail to mount the chassis in the rack.

Installing the Inner Rails

1. Place the inner rail extensions on the side of the chassis aligning the hooks of the chassis with the rail extension holes. Make sure the extension faces “outward” just like the pre-attached inner rail.

2. Slide the extension toward the front of the chassis.

3. Secure the chassis with 2 screws as illustrated. Repeat steps for the other inner rail extension.

Warning: do not pick up the server with the front handles. They are designed to pull the

system from a rack only.

Getting Started

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Figure 2-1. Separating the Rack Rails

Slide rail mounted equipment is not to be used as a shelf or a work space.

Stability hazard. The rack stabilizing mechanism must be in place, or the rack must be bolted to the ﬂoor before you slide the unit out for servicing. Failure to stabilize the rack can cause the rack to tip over.

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Figure 2-2. Assembling the Outer Rails

Outer Rack Rails

Outer rails attach to the rack and hold the chassis in place. The outer rails for the G-RACK 12 chassis extend between 30 inches and 33 inches.

Installing the Outer Rails to the Rack

1. Secure the back end of the outer rail to the rack, using the screws provided.

2. Press the button where the two outer rails are joined to retract the smaller outer rail.

3. Hang the hooks of the rails onto the rack holes and if desired, use screws to secure the front of the outer rail onto the rack.

4. Repeat steps 1-3 for the remaining outer rail.

Getting Started

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Figure 2-3. Installing the Rack Rails

Installing the Chassis into a Rack

1. Extend the outer rails as illustrated above.

2. Align the inner rails of the chassis with the outer rails on the rack.

3. Slide the inner rails into the outer rails, keeping the pressure even on both sides. When the chassis has been pushed completely into the rack, it should click into the locked position.

4. Optional screws may be used to secure the to hold the front of the chassis to the rack.

NOTE: The gure above is for illustration purposes only. Always install servers to the bottom of the rack rst.

Getting Started

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Physically Connecting G-RACK 12

1. Plug in 2 power cords to back of the G-RACK 12

2. Plug in the Ethernet cable

3. LEDs will ﬂash green on ethernet port.

4. Press power button

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Connecting G-RACK 12 to Your Network

When ﬁrst powered on, during the initial boot sequence, the G-RACK 12 will wait to be assigned an IP address via DHCP. If it does not receive a DHCP assigned IP address, by default, it will have a selfassigned IP address of 172.16.12.12. It is recommended to use IP Search Utility when accessing and conﬁguring the G-RACK 12 for the ﬁrst time. To make any needed changes in the network settings you can use web-based the G-RACK 12 Administrative Tool.

This can be found using Bonjour browser - Download Link (http://www.tildesoft.com/) or using dhclient

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If not using DHCP, you can plug your primary network cable into [ETH1]. The default IP Address is

172.16.12.12. You can connect to the G-RACK 12 with this static IP address and with the G-RACK 12 Administration Tool you can change the IP address to what works best for you.

Using static IP, you will need to change your client computer’s IP address to match the static.

For OS X:

1. Open Network Preferences

2. Choose WiFi and click “Advanced”

3. Click on TCP/IP tab

4. Click the drop down menu and choose “manually”

5. Enter IP 172.16.12.12

6. Enter Netmask 255.255.255.0

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7. Save your settings

For Windows:

1. Open Network

2. Go to Sharing > Change adapter settings and choose your connected network

3. View Properties.

4. Click Internet Protocol Version 4 and

5. Click Properties

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6. Change the IP to 172.16.12.12

7. Netmask 255.255.255.0

8. Save your settings

THE FURTHER PROCEDURES SHOULD BE COMPLETED ON ANOTHER NETWORKED CLIENT

COMPUTER WITH A WEB BROWSER

Access the G-RACK 12 by using a supported web browser and use the IP address of the device ( Listed in Bonjour or using Static IP from above)

Getting Started

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G-RACK 12 Web-Based Setup Wizard

The G-RACK 12 Web-based Administration Tool will initially provide a wizard or vertical market selection that is associated with a particular JSON conﬁguration ﬁle that will conﬁgure the system in a single click of a mouse. The composite conﬁguration will include a format for conﬁguring the following:

• Admin password setup;

• Email notiﬁcation;

• User authentication;

• Data disk conﬁguration;

• Networking performance.

THE FURTHER PROCEDURES SHOULD BE COMPLETED ON ANOTHER NETWORKED CLIENT

COMPUTER WITH A WEB BROWSER

Access the G-RACK 12 by using a supported web browser and use the IP address of the device ( Listed in Bonjour browser or using Static IP from previous chapter) The G-RACK 12 has a setup Wizard that allows you to quickly step through the basic procedures of the device settings for the ﬁrst use and to conﬁgure it for your environment.

STEP 1. Access the G-RACK 12 by using a supported web browser. Use the IP address of the device(Refer to Bonjour browser or apply Static IP of the device). Log into the G-RACK 12 Administrator Tool: user: admin password: gtech

Getting Started

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STEP 2. End User License Agreement. An information window with the End User License Agreement prompting you to conﬁrm will appear Please conﬁrm that you have read and agree with the Agreement.

STEP 3. Choose a theme for your environment Theme is a set of pre-conﬁgured parameters, that are most likely to suit to desired working environment.

You can skip Wizard by pressing Skip To Storage Setup button Using the G-RACK 12 Administrative Tool you are free to reconﬁgure the G-RACK 12 later.

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STEP 4. Web Admin Password. Set your G-RACK 12 Admin password here. Login user name will remain “admin”. Please note that password is case sensitive. Min length is 5 characters. If you don’t change the password at this step, it will remain as default. You can reset it later using Web Administrator Password

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STEP 5. Email Notiﬁcation Enable this option to receive notiﬁcations from the G-RACK 12 on drives and system health. It is possible to set email notiﬁcations later using Monitoring Settings menu. An email account for the G-RACK 12 is to be created prior to enabling this option.

Enable Toggle the button to enable the option

SMTP server Specify the SMTP server of the G-RACK 12 email

account

SMTP port Specify the SMTP port of the G-RACK 12 email

account

Use SSL/TLS secure connection Toggle to enable secure connection for of the

G-RACK 12 email account

Sender email Specify the G-RACK 12 email account

Authentication required Toggle to enable authentication

Username Specify Username of the G-RACK 12 email ac-

count

Password Specify Password of the G-RACK 12 email ac-

count

Recipient email Specify who will receive email for the G-RACK 12

to send to emails

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To choose additional notiﬁcation alerts, go to Notiﬁcations in the G-RACK 12 Administration Tool.

STEP 6. Create User Accounts Set up at least one user to continue. User names are lower case only without length limits. Passwords allow both lower and upper cases ( case-sensitive) with the minimal length of 5 characters.

Choose whether all users will share a single workspace or each user will be assigned a separate one.

STEP 7. Customize your G-RACK 12 You will not see this dialog if you have chosen General theme. Divide space between Project shares and iSCSI Media. Setting a percentage of the space to be used for iSCSI Media will allocate the space on the default RAID created and this space will be displayed as occupied in the RAID under the Storage menu once the Wizard is completed.

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STEP 8. Customize the G-RACK 12 Shares and Targets settings. Enable network protocols to used for each Share (workspace) and Targets.

STEP 9. The G-RACK 12 Build Summary. This step is informational. Review the conﬁguration settings to be applied to your G-RACK12.

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STEP 10. Welcome to the G-RACK 12 Administrative tool Once you are done with primary settings, you will see the Dashboard

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All settings can be changed manually in the G-RACK 12 Administrative Tool at any time.

Administrative Tool

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To access the Web user interface, open a web browser, type in the IP address of your G-RACK 12 and log in.

Dashboard

You are here

The G-RACK 12 Dashboard provides a quick overview of performance metrics and health statuses in the form of widgets. The title of a widget is a quick access link to the corresponding menu of the G-RACK 12 Administrative Tool. The information is periodically refreshed automatically.

System Status

Administrative Tool

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The widget displays the summary of total memory , used memory and CPU usages by all running processes. Click the widget title to see more details in the System Overview section. Network Health The widget indicates the state of the network connection and input/output traﬃc. Click the widget title to see more information in the Performance statistics section.

Drive Health

The widget displays the general health status for OS and Data physical drives. The status can be one of the following: “OK”, “Checking”, “Warning”, “Error”. Click the widget title to see more information in the S.M.A.R.T. menu section.

Filesystem Status

The widget shows all ﬁlesystems that have been created, and speciﬁes total space allocated for each of them, space available and the status. The status can be one of the following: “Good”, “Replacing”, “Balancing”, “Degraded”, “Replacing_ stuck”. Click the widget title to see more information in the RAID section. More details on OS ﬁlesystem is in OS RAID menu.

System Health

The widget displays the status of CPU temperature, Fan speed and Voltage. The status can be one of the following: “OK”, “Abnormal”. For more details click the widget title to be see more information in the Monitoring section.

Connected Users

The widget displays all connected users except guests users along with the time of connection to the G-RACK 12. Dashboard will not show that a user is ‘logged into’ the G-RACK 12 server if the user logged in as user ‘ anonymous’ to the FTP service. This also applies to users who use the SMB/CIFS service if ‘guests allowed’ options is turned on. Click the widget title to go to Users menu for further information and settings.

System Information

The widget displays general system information, including hostname, system time and load average values. Click the widget title to go to System Overview menu for further information.

Service Status

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The widget displays the services available and their status. The status can be the following:

means the service is enabled.

means disabled.

the services disabled. Normally this goes together with service disable sign.

means the service is running.

If you see a RED running man, that means the service is stopped.

Click the widget title to see more information under Services section.

Workspace Status

The widget displays the workspaces created on the G-RACK 12 .

means at least one service is enabled for this particular workspace.

means no service is enabled for this particular workspace.

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Workspaces

You are here

Add/Edit Workspace

To create a Workspace, there should be a RAID already created.

Click the Add button to create a new Workspace

The following table describes the labels on the screen:

Name Input the name of the Workspace

Device Select RAID array, which will contain the volume.

Multiple volumes can share the same space in RAID.

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Compress ﬁles Compress ﬁles on-the-ﬂy using Zlib algorithm.

NOTE: It is not recommended to enable Zlib option, if the volume will be used to work with video ﬁles.

Permissions The ﬁle level access of the shared folder path

Comment Add notes on the Workspace here

Click the Permissions button to set users and groups access permission for the Workspace. To change properties click the Edit button.

Modify Shared Folder Permissions

Click the Permissions button to set permission for the Workspace

The following table describes the labels on the screen:

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Directory Choose a workspace to set permission to

User/group permissions Decide on permission to be granted to a partic-

ular user or group for the workspace and toggle the button on.

Advanced options

Advanced options can be found by clicking the arrow at the bottom of the dialog window. The options allow speciﬁc access rights to individual users and groups to be assigned.

Owner The name of the owner and associated per-

missions

Group The name of the group and associated permis-

sions

Others Permissions for others, guests and anonymous

user types.

Replace Toggle on to replace all existing permissions

Default -” On”

Recursive Toggle on to apply permissions to ﬁles and

subfolders. Default -” On”

To enable domain users go to the Active Directory menu.

NOTE: In some situations the permissions of a user may diﬀer from the permissions of a group he is assigned to.

NOTE: It is important to note that additionally you can also enable a guest account. This enables users without local or domain account to access the shares. Before they can access any share user „guest“ must be allowed under access settings for this share.

Create snapshot

A snapshot is a volume that shares its data and metadata with another volume. Once a writable snapshot is made, there is no diﬀerence between the original volume and the new snapshot volume.

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The following table describes the labels on the screen:

Device Name of the related physical disk

Volume’s name Name of the volume

Snapshots’s path The relative path according to root of the se-

lected ﬁle system

Read only Toggle to make the snapshot read-only

Quotas

This option is used to limit the amount of disk storage space that is allowed for a workspace. When the quota limits are approached or exceeded , the system will generate notiﬁcations. To set quota limits, select the Workspace and click the Quota button to open the setting dialog.

General settings

To enable quota limits toggle the button on and click Save.

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Quota information

The table lists all created workspaces, space already used and their quota

Select the workspace to set a quota limit and click the Edit Quota Limits button.

NOTE: It is not possible to set the quota limit less than the already used space.

Mount

Click the Mount button to mount a workspace. Until you mount the workspace, all the options will remain unavailable.

Unmount

To unmount the selected workspace, highlight it and click the Unmount button.

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Delete Workspace

To delete a workspace highlight the workspace and click Delete button.

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Storage

You are here

Physical Disks

This information page displays all the hard drives of the G-RACK 12. It shows the drive slot number, system name of the drive, vendor, model, serial number and disk capacity. For best practice we recommend using all disks of the same capacity and the same vendor.

Physical disk properties

To enter the properties dialog select desired drive and click the Edit button.

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The following table describes the labels on the screen:

Spindown time Directly connected with Advanced Power

Management level chosen. Sets the idle time for the drive after which the spindle will stop spinning.

Write cache Enables write-cache.

This option is eﬀective only if the hard drive supports it. It gives substantial write performance boost at the cost of loosing data on power down.

Wipe physical drive

This option erases all the data from a physical disk. When you click the button, a warning message will appear to inform you that all the data will be erased.

There are two options for wiping - Secure and Quick

Quick - erases only boot sector and ﬁle system meta data so that the drive will be treated by OS as a brand new one. Secure - in addition to the Quick erase functionality, Secure erase also erases all user’s data, which makes the data unrecoverable.

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Scan for new drives

Use this option to force the system to scan for new drives. The system automatically scans for new drives every minute.

S.M.A.R.T.

S.M.A.R.T. stands for “Self-Monitoring, Analysis and Reporting Technology”. This is the system on a hard drive used to monitor and report on the health of the drive. It helps to diagnose the system and provide early warnings about the drives’ health.

Devices

Provides the list of all installed physical drives. It is possible to switch on S.M.A.R.T. monitoring here and call Device properties dialog. In the list you can toggle the switch for each drive individually.

The following table describes the labels on the screen

Monitor Toggle on to enable monitoring

Device System name of the physical disk

Model Manufacturer’s model of the physical disk

Vendor Name of the vendor

Serial number Serial number of the physical disks

Capacity Capacity of the physical disk

Temperature Current temperature of the physical disk

The status of the physical disks is displayed in the Drive Health widget of the Dashboard:

• OK - drives operating properly.

• Checking - system is checking the health status of the drives.

• Warning - at least one drive that has exceeded a S.M.A.R.T. parameters

• Error - S.M.A.R.T. has detected at least one drive with a failure. The drive may need to be replaced.

Device properties

To enter the dialog select desired drive and click the Edit button.

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To allow S.M.A.R.T. monitoring system wide, select all the drives, then click the Edit button. Toggle the button and save.

S.M.A.R.T. information dialog provides a set of reports. The screens below display the information about the physical drive health. NOTE: The available S.M.A.R.T. information varies from one physical disk’s manufacturer to another. Also, not all physical disks have S.M.A.R.T. support.

Device information

Select the device and click the information button to pull up the information dialog.

The following table describes the labels on the screen:

Device Device reference name in the system

Device model Shows the hard drive’s model that uniquely

identiﬁes a physical disk

Serial number Shows the individual serial number of an indi-

vidual physical disk from the manufacturer

Firmware version Shows the version of physical drive’s internal

operating system software.

Attributes

Describe the physical drive state, performance and other data S.M.A.R.T. can access.

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The following table describes the labels on the screen:

ID Identiﬁcation number to mark a hard drive at-

tribute. This is a standard across all S.M.A.R.T. enabled storage devices. However it depends on the storage vendor which attributes it will allow S.M.A.R.T. to diagnose.

Attribute name This refers to an attribute of the hard drive that

S.M.A.R.T. can access. Attributes describe the drive’s physical state. performance, etc.

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Flags Indicates the main purpose of the attribute. An

attribute can be critical (able to predict failure) or statistical one ( does not directly aﬀect condition)

• P - pre-failure

• O - online

• S - performance

• R - error

• C - event count

• K - self-preserving

• + - any other ﬂag

Value Value that correspond to the Raw value. Com-

pare this with the Threshold. S.M.A.R.T. compresses the raw value(s) into a digit from 1 to 253, where 1 indicates the worst scenario while 253 indicates the best scenario. The value 100 or 200 usually represent the normal value.

Worst This is the lowest value attained by the hard

drive since S.M.A.R.T. started its assessment of the physical drive.

Treshold This is the attribute’s threshold value. if the at-

tribute’s current normalized value is less than or equal to the threshold, the attribute has failed. An attribute value close to or below the threshold indicates the hard drive is no longer reliable

When failed The ﬁeld indicates when ( if ever) the attribute

failed. An attribute has failed if the normalized value is less than or equal to the threshold

Raw value This is the attribute’s unprocessed raw data.

These values show exact amount of time or numbers of attempts or errors. The meaning to the raw values is speciﬁc to the physical drive manufacture.

Self-test logs

This tab will show the results of any self-test that have been run

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Extended information from smartctl utility

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History

Scheduled Tests

Add/ Edit scheduled test

For each of the devices you can schedule a particular test from the list. The test will run at a predetermined time and date. Click the plus button to add a scheduled test.

The following table describes the labels on the screen:

Enable Enables the scheduled test to run

Device Select a physical drive for a test. S.M.A.R.T. moni-

toring must be activated for the selected device.

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Type Choose type of test.

Short self-test

The goal of the short test is the rapid identiﬁcation of a defective hard drive. Therefore, a maximum run time for the short test is 2 min. The test checks the disk by dividing it into three diﬀerent segments. The following areas are tested:

• Electrical Properties: The controller tests its own electronics, and since this is speciﬁc to each manufacturer, it cannot be explained exactly what is being tested. It is conceivable, for example, to test the internal RAM, the read/write circuits or the head electronics.

• Mechanical Properties: The exact sequence of the servos and the positioning mechanism to be tested is also speciﬁc to each manufacturer.

• Read/Verify: It will read a certain area of the disk and verify certain data, the size and position of the region that is read is also speciﬁc to each manufacturer.

Long self-test

The long test was designed as the ﬁnal test in production and is the same as the short test with two dierences. There is no time restriction and in the Read/Verify segment the entire disk is checked and not just a section. The Long test can, for example, be used to conﬁrm the results of the short tests.

Conveyance self-test

This test can be performed to determine damage during transport of the hard disk within just a few minutes.

Oine immediate self-test

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Hour Set the time when the test will be performed.

Asterisk means “every hour”

Day of month Set the day when the test will be performed.

Asterisk means “every day”

Month Set the month when the test will be performed.

Asterisk means “every month”

Day of week Set the day of the week when the test will be

performed. Asterisk means “every week”

Comment Add optional text here

The test created will appear under the Scheduled tests tab.

To disable the test, toggle oﬀ the enable button. The test will not run, but will remain in the list.

Execute scheduled test

The Run button starts the test immediately. When ﬁnished, output is displayed in the dialog window. Most of the tests update smart attributes/counters that are shown in Attributes tab under S.M.A.R.T. information

Delete

Click the Delete button to delete the test.

Settings

Use this screen for setting hardware sensors to monitor physical disks’ health. They detect and report the changes the behavior of the fan, temperature and voltage.

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The following table describes the labels on the screen:

Enable Toggle on to enable S.M.A.R.T. monitoring for

the physical disks

Check interval Sets the interval between disk checks to N sec-

onds.

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Power mode Prevent a disk from being spun-up when it is

periodically polled.

• Never - Poll (check) the device regardless of its power mode. This may cause a disk which is spun-down to be spun-up when it is checked.

• Sleep - Check the device unless it is in SLEEP mode.

• Standby - Check the device unless it is in SLEEP or STANDBY mode. In these modes most disks are not spinning, so if you want to prevent a disk from spinning up each poll, this is probably what you want.

• Idle - Check the device unless it is in SLEEP, STANDBY or IDLE mode. In the IDLE state, most disks are still spinning, so this is probably not what you want.

Diﬀerence Report if the temperature had changed by at

least N degrees Celsius since last report. Set to 0 to disable this report.

Informal Report if the temperature is greater or equal

than N degrees Celsius. Set to 0 to disable this report.

Critical Report if the temperature is greater or equal

than N degrees Celsius. Set to 0 to disable this

report. The changes of status will be reﬂected in Dashboard. If the values are between LNC ( Low Non Critical)and UNC( Upper Non Critical), it is “OK”. Otherwise the status is “Abnormal”

“Abnormal” status for the fan means that it is failing, and the related hardware temperature will go up.

If the temperature is too high and shows the “Abnormal” status in Dashboard, the system will shut down by itself to protect the hardware, will malfunction or will break down. If voltages are not stable and the Dashboard displays “Abnormal” status, the system will show unstable behavior. It may randomly freeze or will not respond. If you experience any of these issues, call support team.

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RAID

This menu is used to set RAID conﬁguration and format the data drives.

The status is displayed in the Dashboard and can be one of the following:

• Good - normal state. everything is ok

• Unmounted - ﬁlesystem unmounted, not in use

• Degraded - there is a drive missing. The ﬁlesystem is still operational. Replace the missing drive.

• Replacing (%) - the user has added a replacement drive into the system and the system in the process of bringing it into the RAID. Percentage will show how much is completed.

• Balancing - when the ﬁlesystem is re-allocating/ distributing the information across all the drives

• Delete missing - system is removing the drive that has failed( drive is gone), recovery operation

• Replacing_stuck - mounting has been resumed after rebooting, but the physical disk is missing

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Create RAID device

Use this menu to create a new data RAID device

The following table describes the labels on the screen:

Name Input a name for new RAID

Level Choose RAID level from the list - 5 or 6. Please

refer to Appendix for additional information. Default displayed is RAID 5.

Devices Select physical drives, that will be part of this

RAID array.

NOTE: The minimal number of drives for diﬀerent RAID levels is:

• RAID 5 - minimum 2 physical disks

• RAID 6 - minimum 3 physical disks

For best practice we recommend using all disks of the same capacity and the same vendor. If your system happens to have disks of diﬀerent capacity, please make sure to have the disks of the same size within one RAID (When using disks of diﬀerent sizes, the system may report the capacity incorrectly). This approach will help to ensure data integrity and security, it’s also associated with correctly storing and fetching the data.

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Grow RAID device

Select devices to be added to the RAID device. The list will display unassigned physical drives. Remember to perform balance on any modiﬁcation of RAID structure.

The following table describes the labels on the screen:

Name The name of the RAID

Level The level of the RAID

Devices Choose physical drive to join the RAID array

NOTE: Remember to perform balance on any modiﬁcation of RAID structure.

For best practice we recommend using all drives of the same capacity. If your system happens to have drives of diﬀerent capacities, please make sure to have drive of the same capacity within one RAID. This approach will help to ensure data integrity and security, it’s also associated with correctly storing and fetching the data.

Remove devices from RAID

Select devices to be removed from the RAID device. Repeat the steps if you need to remove more than one physical drive.

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The following table describes the labels on the screen:

Name The name of the RAID

Level The level of the RAID

Devices Choose the physical disk to be removed from

the RAID

NOTE: The minimal number of drives for diﬀerent RAID levels is:

• RAID 5 - minimum 3 physical disks

• RAID 6 - minimum 4 physical disks

Select hot spare devices for RAID

Hot spare is a standby physical disk that can repair a degraded RAID device by automatically replacing a failed disk. Setting a hot spare will minimize degraded array state. Click the Hot spare button to call the dialog to set a hot spare for a RAID. Select devices to be added as a hot spare to the selected RAID device

The following table describes the labels on the screen:

Name The name of the RAID will be displayed here

Level The level of the RAID will be displayed here

Devices Choose the physical disk to be set as a hot spare

It is possible to assign one standby physical disk as a hot spare to be shared by several RAID devices. Once the the data rebuilding ﬁnishes, the administrator can take out the faulty physical disk, insert a new one and assign it to be a new hot spare.

For best practice we recommend using a drive of the same capacity as the faulty drive.

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Balance

While the RAID is being balanced, its status in the ﬁeld State will be “balancing”. Balance operation may take a signiﬁcant amount of time. Balancing may have impact on the RAID performance but does not block any regular operations.

Array details

The menu will call the array information window

Mount

Click the Mount button to mount the RAID device. A newly created RAID will be mounted automatically

Unmount

To unmount the selected RAID click the Unmount button. To make this option active, all volumes of the RAID are to be deleted. Otherwise the status of the RAID will be displayed as “referenced” and Unmount option will stay inactive.

Delete

Click the Delete button to delete a RAID The button will become active only when unmounted RAID is selected.

Refresh

Click the Refresh button to force the system to search for new RAIDs or display the latest changes.

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Connect

You are here

Advanced Menu & Simple Menu

Simple menu button is set to shrink the displayed menu buttons to the most used items. The icons that are not displayed will remain hidden until you press the Advanced menu button. Simple menu displays only Network, Services, NFS, SMB/CIFS, AFP and iSCSI SCST. Advanced menu also includes FTP, Rsync and SSH.

Network

General

Here you can set the G-RACK 12 host and domain information.

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The following table describes the labels on the screen:

Hostname Label that identiﬁes the system to the network

Domain Name DNS domain where the G-RACK 12 hostname

should be registered

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Interfaces

Add/Edit Ethernet

The menu is used to conﬁgure and add network interfaces. Both ipv4 and ipv6 are conﬁgurable using this menu. To conﬁgure a particular interface highlight, that interface and select the edit button.

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Set conﬁguration for each network interface.

The following table describes the labels on the screen:

Name Type in the name if( active)

Comment Add text to remind you what the inteface is con-

nected to

IPv4 For IP version 4 protocol setup

Method Static - you manually enter an ip address of your

choosing, netmask and gateway Dynamic - allow dhcp server to assign you an ip address, a netmask and the gateway.

Address Supplied if you choose static or automatically

supplied if you dynamic method has been chosen

Netmask Add Netmask

Gateway Add Gateway

IPv6 For IP version 6 protocol setup

Method DHCP - allow DHCP server to assign you an IP

address, Netmask and the gateway. Auto - requests information speciﬁcally from an IPv6-enabled router and automatically conﬁgure your settings Static - Enter manually an IP address of your choosing, netmask and gateway( provided by your system administrator). Disabled - do not use IPv6

Address Add address

Preﬁx length Default value is always 64

Gateway Add gateway

Advanced settings

DNS servers IP addresses of domain name servers used to

resolve host names

Search domains Domains used when resolving host names

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MTU Media Transfer Unit - the size of the packet pay-

load for the this interface

Wake-on-LAN Toggle to enable Wake-on-Lan if packets arrive

at this interface

Options Additional device settings, e.g. ‘autoneg oﬀ

speed 100 duplex full’. See manual page for more details.

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Add/Edit Bond

Bonding is a technology that allows aggregations of multiple Ethernet interfaces into a single virtual link, thus getting higher data rates and providing failover.

How to Port Bond 4 ports:

1. Login to admin tool after G-RACK 12 has been setup and conﬁgured with one of the primary Ethernet ports (eth0 or eth1) I am using DHCP eth0 port to login as.

2. Navigate to Connect > Network > Interfaces tab

3. G-RACK 12 will conﬁgure eth0 and eth1(static). Delete eth1 interface.

4. After eth1 has been deleted, eth0 should be only one remaining. You will need this for now, do not delete both or all eth ports or else you will not be able to login to the admin tool with an IP address.

5. Click on “+” to add a new network interface.

6. Select “Bond” interface

7. In the Add bond connection view that displays, under the available slaves list select all 3 available and currently disabled eth ports.

The following table describes the labels on the screen:

Name Enter the name of the connection

Comment Add an optional text here

Bond Slaves Choose slaves from the drop down list

Mode Speciﬁes one of the bonding policies

Primary Speciﬁes which slave is the primary device.

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MII monitoring frequency Speciﬁes the MII link monitoring frequency in

milliseconds

Down delay Speciﬁes the time, in milliseconds, to wait

before enabling a slave after a link recovery has been detected

Up delay Speciﬁes the time, i n milliseconds, to wait

before enabling a slave after a link recovery has been detected

IPv4 For IP version 4 protocol setup

Method Static - you manually enter an ip address of your

choosing, netmask and gateway Dynamic - allow dhcp server to assign you an ip address, a netmask and the gateway.

Address Enter an IP address

Netmask Enter the subnet mask of your network

Gateway Enter the IP address of your gateway

IPv6 For IP version 6 protocol setup

Method DHCP - allow DHCP server to assign you an IP

Address Enter an IP address

Preﬁx length Default value is always 64

Gateway Enter the IP address of your gateway

Advanced Settings

DNS servers IP addresses of domain name servers used to

resolve host names

Search domains Domains used when resolving host names

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MTU Media Transfer Unit - the size of the packet pay-

load for the this interface

Wake-on-LAN Toggle to enable Wake-on-LAN if packets arrive

at this interface

Options Additional device settings, e.g. ‘autoneg oﬀ

speed 100 duplex full’. See manual page for more details

• Under IPv4 choose either static or DHCP as the method.

• Not changing any other settings, save the new bond conﬁguration. Bond0 should display in the list with a DHCP IP generated.

• Log out of the admin tool after getting IP for bond0 interface, then login to the admin tool with bond0 IP instead.

• Navigate back to Connect > Network > Interfaces and delete eth0 interface.

• After deleting eth0 successfully edit bond0 interface and add eth0 slave to bond interface then save.

• bond0 should now have all 4 Ethernet ports as slave members; IP should not have changed.

• Remember to add all four ports on switch side to be trunk members in LACP Lag type conﬁguration as well.

Once a new bond connection has been created, use “Edit Ethernet connection” dialog for its conﬁguration.

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Identify

This menu is used to ﬁnd Ethernet port corresponding to the particular Interface.

Delete

To delete an interface, hightlight it and click the Delete button.

Service Discovery

The service allows the tool that probes each TCP/UDP port to see if there is a service listening. Then the tool will know that the service is available to connect to the G-RACK 12. If the advertising of service of each port is turned on, the port can be scanned .

NOTE: Enabling a service discovery for a particular service does not enable the service itself. To enable the service, refer to the corresponding setting menu under Connect menu.

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Firewall

Firewall Filters the network traﬃc based on speciﬁc ruled, added by the administrator .

Add/Edit

By adding custom rules , it is possible to allow or block access based on the service or application, source or destination IP addresses, time of the day. its also possible to choose to log traﬃc that matches or does not match the deﬁned rule.

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The following table describes the labels on the screen:

Family For IPv4

Direction Choose the direction of the traﬃc to ﬁlter

Action This speciﬁes what to do if the packet matches

Source Source address can be either a network IP ad-

dress (with/mask), an IP range or a plain IP address. A”!” argument before the address speciﬁcation inverts the sense of the address

Source port Match if the source port is one of the given

ports. E.g. 21 or !443 or 1024-65535

Destination Destination address can be either a network IP

address (with/mask), an IP range or a plain IP address. A”!” argument before the address speciﬁcation inverts the sense of the address

Destination port Match if the destination port is one of the given

ports, E.g. 21 or !443 or 1024-65535

Protocol Choose the protocol from drop down menu

Advanced options Text ﬁeld for adding additional commands

Comment Add an optional text

Delete

Use this button to delete the rule.

Up/Down

The Up button and the down button will move the rule.

Save

The save button saves the changes made.

Refresh

The Refresh button will reload the screen and display the changes.

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Services

Overview

The menu shows network services enabled and successfully running.

SSH

The menu shows additional information on SSH status, currently logged in users and established connections.

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SMB/CIFS

The menu shows additional information on SMB/CIFS status, currently logged in users and established connections.

FTP

The menu shows additional information on its status, currently logged in users and established connections.

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NFS

The G-RACK 12 supports Network File System ( NFS) service. Enable this multi-platform ﬁle system here. Otherwise disable the option to prevent unnecessary CPU overhead.

Share is a way a user will connect to the G-RACK 12 to transfer ﬁles. We are sharing a workspace. Need set NFS protocol to reach the workspace. i.e. to share a workspace.

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The following table describes the labels on the screen:

Shared Workspace The name of the workspace you wish to share.

You can choose an existing workspace or create a new one. Find your Workspace by using the drop down option or you can use the search feature to locate the Workspace desired. The NFS share will be accessible at /export/ when your NFS client is pointed to the share.

Client This deﬁnes the scope of network access to the

NFS share. You can limit or expand access to the NFS share by setting these parameters.

• The most limiting parameter would be to type in an exact IP address. An example of this is setting of 192.168.0.12 and by doing so you would limit the NFS share to exactly the one computer that had that IP address.

• The next level of access is to provide access to all computers on a speciﬁc subnet. An example of this is a setting of 192.168.0.0/24 and by doing so you would limit the NFS share to all computers that have a matching subnet. This means all computers with IP addresses in the 192.168.0.0 to

192.168.0.254 range would be able to mount this NFS share.

• Finally, the least restrictive setting available for this Client parameter is leaving it blank. If you leave it blank then any computer that can negotiate traﬃc to the IP address of the G-RACK 12 will have access to the NFS share. You will only want to use this in networks where outside traﬃc is limited by other means such as a secure ﬁrewall.

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Privilege This is a dropdown box that has two options

that are fairly clear. 1) Read-only which means you will be able read and copy the ﬁles on this NFS share but you will not be able to edit them and 2) Read-Write that gives you privileges to read, edit, copy, and delete the ﬁles available on this NFS share.

Advanced options Advanced Options - Additional information on

these settings can be found online at http:// linux.die.net/man/5/exports

Comment This is fairly self explanatory. Place text in this

box that you want associated with this NFS share. It can be notes on why it was created or any other information you choose

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Settings

Use this menu to enable the service

The following table describes the labels on the screen:

Enable Turns on the service protocol

Number of servers Speciﬁes how many server threads to create. The

number of users that can connect to the server at one time.

NOTE: The Dashboard will show the service as “running” only if at least one workspace is set to use NFS protocol. NFS service doesn’t run unless something is exported.

Mac Client Information

On a Mac clients and mounting through NFS with the ‘Connect to Server’ option the Mac client admin must go to NFS share and change it from ‘secure’ to ‘insecure’ in the extra options. The whole share directory will be set as insecure since it does not display child folders.

When mounting through NFS OS X does not ask for user authentication like SMB, it automatically mounts it. In order to write to the share admins need to go into admin tool and go to workspace and

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enable read/write/execute for Others in the ACL options. (This can be set for child folders only)

Use these steps to mount and allow users to write to the share.

1. Go through Wizard > Media > Both setup and enable NFS protocol

2. After creating shares and logging in, navigate to Connect > NFS

3. Edit share and change client IP

4. In extra options change secure to insecure and save

5. Navigate to Access Control > Workspaces and open up ACL options

6. Change Others to Read/Write/Execute and save

7. On mac client open up ‘Connect to Server’ (can hit command+k)

8. Enter url for server: nfs://grack_ip/export/share_name

NFS share will mount and folder that had Others enabled to Read/Write/Execute will allow write ability.

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SMB/CIFS

Workspaces

Add a workspace that will connect via SMB/CIFS service

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The following table describes the labels on the screen:

Enable Toggle on to enable the service

Workspace folder The location of the ﬁles to share.

Name The name of the share.

Comment This is a text ﬁeld that is seen next to a share

when a client queries the server.

Public If ‘Guests allowed’ is selected and no login cre-

dential is provided, then access as guest. Always access as guest when ‘Only guests’ is selecting; in this case no password is required to connect to the share.

Read only Set read only.

If this parameter is set, then users may not create or modify ﬁles in the share

Browseable Set browseable

This controls whether this share is seen in the list of available shares in a net view and in the browse list.

Inherit ACLs Honor existing ACLs

This parameter can be used to ensure that if default ACLs exist on parent directories, they are always honored when creating a new ﬁle or subdirectory in these parent directories.

Inherit permissions Enable permission inheritance

The permissions on new ﬁles and directories are normally governed by create mask and directory mask but the inherit permissions parameter overrides this. This can be particularly useful on systems with many users to allow a single share to be used ﬂexibly by each user.

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Recycle bin Enable recycle bin.

This will create a recycle bin on the share. Files that are larger than the speciﬁed number of bytes will not be put into the recycle bin. Set to 0 for unrestricted ﬁle size. Files in the recycle bin will be deleted automatically after the speciﬁed number of days. Set to 0 for manual deletion.

Hide dot ﬁles This parameter controls whether ﬁles starting

with a dot appear as hidden ﬁles

Extended attributes Enable extended attribute support

Allow clients to attempt to store OS/2 style extended attributes on a share.

Store DOS attributes Enable store DOS attributes support

If this parameter is set, Samba attempts to ﬁrst read DOS attributes (SYSTEM, HIDDEN, ARCHIVE or READ-ONLY) from a ﬁle system extended attribute, before mapping DOS attributes to UNIX permission bits. When set, DOS attributes will be stored onto an extended attribute in the UNIX ﬁle system, associated with the ﬁle or directory.

Hosts allow This option is a comma, space, or tab delimited

set of hosts which are permitted to access this share. You can specify the hosts by name or IP number. Leave this ﬁeld empty to use default settings.

Hosts deny This option is a comma, space, or tab delimited

set of host which are NOT permitted to access this share. Where the lists conﬂict, the allow list takes precedence. In the event that it is necessary to deny all by default, use the keyword ALL (or the netmask 0.0.0.0/0) and then explicitly specify to the hosts allow parameter those hosts that should be permitted access. Leave this ﬁeld empty to use default settings.

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Audit Audit ﬁle operations.

NOTE: Connecting a shared workspace through SMB protocol, the username is case sensitive.

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Settings

Use this menu to enable the service

The following table describes the labels on the screen:

Enable Toggle on to enable the service

Workgroup The workgroup the server will appear to be in

when queried by clients.

Description The NT description ﬁeld.

Local Master Browser Allow this server to try and become a local mas-

ter browser. Eae i use a computer it will show all available shares

Time server Allow this server to advertise itself as a time

server to Windows clients

WINS support Enable WINS server

Act as a WINS server

WINS server Use the speciﬁed WINS server.

Log level Choose log level from None, Minimum, Normal,

Full, Debug.

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AFP (Apple Filling Protocol)

The G-RACK 12 supports Apple Filling Service for connectivity with Mac OS computers. If you need to use AFP service enable it here otherwise leave it disabled to reduce CPU resource overhead.

Workspaces

Add a workspace that will connect via AFPservice

The following table describes the labels on the screen:

Shared workspace The location of the ﬁles to share.

Workspace The name of the share.

Read only Set read only. If this option is set, then users may

not create or modify ﬁles in the share.

Guest login Allow guest login. Guests only have read access

by default.

Guest permissions Allow guests to create or modify ﬁles.

Time Machine support Enable Time Machine support for this share.

Unix privileges Use AFP3 unix privileges.

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Use dots Don’t do :hex translation for dot ﬁles. When

this option gets set, certain ﬁle names become illegal. These are .Parent and anything that starts with .Apple.

Hide dot ﬁles Make dot ﬁles invisible.

Forces ﬁlename restrictions This forces ﬁlenames to be restricted to the

character set used by Windows.

Case folding This option handles, if the case of ﬁlenames

should be changed.

Comment Add an optional text here

Settings

Use this menu to enable the service

The following table describes the labels on the screen:

Enable Toggle on to enable the protocol

Allow plain passwords Allow logins with passwords transmitted in the

clear.

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FTP

SSL/TLS

Use this tab to enable SSL/TLS encryption for FTP connections. You may also want to restrict FTP ovel SSL/TLS connections to establish only certain SSL certiﬁcates.

The following table describes the labels on the screen:

Enable Enable SSL/TLS connections

Certiﬁcate The SSL certiﬁcate.

Required This option requires clients to use FTP over TLS

when talking to this server.

No certiﬁcate request This option causes the server to not send a certi-

ﬁcate request during a SSL handshake.

No session reuse required The requirement that the SSL session from the

control connection is reused for data connections is not required.

Implicit SSL This option will handle all connections as if they

are SSL connections implicitly.

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Ban List

The tab allows further hardening of FTP server security. Here you can limit users for various criteria, like maximum amount of simultaneous connections or maximum duration of the client-server session.

The following table describes the labels on the screen:

Event This rule is triggered whenever the selected

event directive occurs.

Occurrence This parameter says that if N occurrences of the

event happen within the given time interval, then a ban is automatically added.

Time interval Speciﬁes the time interval in hh:mm:ss in which

the given number of occurrences must happen to add the ban.

Expire Speciﬁes the time in hh:mm:ss after which the

ban expires.

The Ban List blocked will display the IP addresses you blocked.

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Add a workspace that will connect via FTP service

The following table describes the labels on the screen:

Shared workspace The location of the ﬁles to share.

Comment Optional comment text box

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Settings

Use this menu to enable the FTP service

The following table describes the labels on the screen:

Enable Toggle on to enable the service

Port Specify the port to be used

Max. clients Set the maximum number of simultaneous

clients that can connect to the FTP server

Max.connections per host Maximum number of connections per IP (0 =

unlimited).

Max. login attempts Maximum number of allowed password at-

tempts before disconnection.

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Timeout Maximum idle time in seconds. Setting idle

timeout to 0 disables the idle timer completely (clients can stay connected for ever, without sending data).

Anonymous FTP Enable anonymous FTP

Welcome message The welcome message which will be displayed

to the user when they initially login.

Permit root login Speciﬁes whether it is allowed to login as supe-

ruser directly

Require valid shell Deny logins which do not have a valid shell

Bandwidth restriction Use the following bandwidth restriction: 0 KiB/s

means unlimited.

Passive FTP Use the following port range: In some cases you

have to specify passive ports range to by-pass ﬁrewall limitations. Passive ports restricts the range of ports from which the server will select when sent the PASV command from a client. The server will randomly choose a number from within the speciﬁed range until an open port is found. The port range selected must be in the non-privileged range (eg. greater than or equal to 1024). It is strongly recommended that the chosen range be large enough to handle many simultaneous passive connections (for example, 49152-65534, the IANA-registered ephemeral port range).

Masquerade address If your host is acting as a NAT gateway or port

forwarder for the server, this option is useful in order to allow passive transfers to work. You have to use your public address and opening the passive ports used on your ﬁrewall as well.

Speciﬁes the amount of time, in seconds, between checking and updating the masquerade address by resolving the IP address. Set this value to 0 to disable this option.

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FXP Enable FXP protoco. FXP allows transfers be-

tween two remote FTP servers without any ﬁle data going to the client asking for the transfer. Note: In order to use FXP (File Exchange Protocol) for server-to-server data transfer, make sure to change the port from 21 to some other port. Also, make sure to open the corresponding port on your router and forward that port from your router to the device.

Resume Allow clients to resume interrupted uploads and

downloads

Ident protocol Enable the ident protocol (RFC1413) . When a

client initially connects to the server the ident protocol is used to attempt to identify the remote username.

Reverse DNS lookup Enable reverse DNS lookup. Enable reverse

DNS lookup performed on the remote host’s IP address for incoming active mode data connections and outgoing passive mode data connections.

Transfer log Enable transfer log

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Rsync

Rsync is a tool for copying and backing up data from one location( the source) to another( the destination). It is eﬃcient because it only transfers ﬁles which are diﬀerent between the source and destination directories.

Jobs

To add a new rsync task press the Add button. These parameters deﬁne the overall behavior of RSync.

The following table describes the labels on the screen:

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Enable Toggle the button to enable RSync

Type Choose the type: Local - synchronizes two

local directories Remote - synchronizes a local directory to a remote one. Obtain SSH access to perform this. The remote system is to have synchronizing enabled

Mode This option will be available if “remote” type

has been chosen. Is speciﬁes the synchronizing direction. Push - pushes the directory from the local system to a remote system Pull - is used to sync a remote directory to the local system.

Source shared folder The source shared folder to be synchronized

Destination shared folder The destination shared folder.

Trial run Perform a trial run with no changes made

Recursive Recurse into directories

Times Preserve modiﬁcation times

Compress Compress ﬁle data during the transfer

Archive Enable archive mode

Delete Delete ﬁles on the receiving side that don’t exist

on sender

Quiet Suppress non-error messages

Preserve permissions Set the destination permissions to be the same

as the source permissions

Preserve ACLs Update the destination ACLs to be the same as

the source ACLs

Preserve extended attributes Update the destination extended attributes to

be the same as the local ones

Keep partially transferred ﬁles Enable this option to keep partially transferred

ﬁles, otherwise they will be deleted if the transfer is interrupted.

Send email Send command output via email. An email mes-

sage with the command output (if any produced) is send to the administrator.

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Comment Optional comment text box

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Rsync and iSCSI

It is possible to rsync one iSCSI target to another G-RACK 12. Unfortunately, there is no native way to access it from the G-RACK 12 Administration GUI and initiators will not recognize it.

In order to access the duplicate iSCSI target on the second G-RACK 12 you will need to do the following hack:

• Create an iSCSI target (original).

• Rsync this iSCSI target to another G-RACK 12 (duplicate).

• If at this point you try to discover the (duplicate) target from initiator the result will be it is not recognized

• On the G-RACK 12 that has the duplicate you will want to create new target LUN (fake target).

• Replace new (fake) target with rsync’d (duplicate) target keeping (fake) targets ﬁle name.

• Re-discover targets from initiator computer.

• Result: You will be able to access rsync’d (duplicate) target using the (fake) target’s name.

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Server

Settings

Use this menu to enable rsync utility and set the port

The following table describes the labels on the screen:

Enable Toggle on to enable

Port Choose the port. Default :873

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Modules

Use this mvenu to set a folder to be shared.

The following table describes the labels on the screen:

Enable Toggle the button to enable

Shared folder The location of the ﬁles to share.

Name The name of the share

User This option speciﬁes the user name that ﬁle

transfers to and from that module should take place.

Group This option speciﬁes the group name that ﬁle

transfers to and from that module should take place.

Use chroot Enable chroot. If this option is set, the daemon

will chroot to the shared folder path before starting the ﬁle transfer with the client. Then it is not possible to map users and groups by name and the daemon is not being able to follow symbolic links that are either absolute or outside of the new root path.

Authenticate users Enable user authentication. If set then the client

will be challenged to supply a username and password to connect to the module.

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Read only Set read only

If this option is set, then any attempted uploads will fail.

Write only Set write only. If this option is set, then any

attempted downloads will fail.

List Enable module listing

This option determines if this module should be listed when the client asks for a listing of available modules.

Max.connections This option speciﬁes the maximum number of

simultaneous connections. 0 means no limit.

Hosts allow This option is a comma, space, or tab delimited

set of hosts which are permitted to access this module. You can specify the hosts by name or IP number. Leave this ﬁeld empty to use default settings.

Hosts deny This option is a comma, space, or tab delimited

set of host which are NOT permitted to access this module. Where the lists conﬂict, the allow list takes precedence. In the event that it is necessary to deny all by default, use the keyword ALL (or the netmask 0.0.0.0/0) and then explicitly specify to the hosts allow parameter those hosts that should be permitted access. Leave this ﬁeld empty to use default settings.

Comment Add an optional text here

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iSCSI SCST

iSCSI stands for “Internet SCSI”. iSCSI allows a SCSI-protocol to be transported in Ethernet packages via an IP network. This allows enterprises to set up inexpensive SANSs using their already existing standardized Ethernet network infrastructure. iSCSI runs on widely used and trusted IP networks which makes it possible to use the advantages of a SAN without creating a new network infrastructure, and in addition you do not need to train your employees. On the client side it requires an iSCSI “initiator“ . The connection between the G-RACK 12 server and the iSCSI initiator is set via the normal Ethernet infrastructure (Network switch). The client then detects the storage of the G-RACK 12 server as an own local hard disk drive.

Settings

Toggle the button to enable the protocol and click the Save button.

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Targets

Under conﬁgured iSCSI targets you can see all existing targets on the server and their corresponding status. Click the Add button to create a new iSCSI target. Also you can conﬁgure CHAP Authentication for this iSCSI Target

The following table describes the labels on the screen:

Name The name of target.

User name optional attribute containing user name for

incoming user name. goes to the iSCSI target and the LUN that is automatically created. CHAP secret

Password optional attribute containing user password for

incoming user name. Password must be at least 12 characters

QueuedCommands deﬁnes maximum number of commands qu-

eued to any session of this target. Default is 32 commands.

IntialR2T Turns on the default use of R2T; if disabled,

allows an initiator to start sending data to a target as if it had received an initial R2T. The result function is OR

ImmediateData Conﬁgure using of unsolicited data. The result

function is AND.

HeaderDigest *

DataDigest *

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MaxConnections The maximum number of connections that can

be requested or are acceptable. The result function is Min.

MaxRecvDataSegmentLenght The maximum amount of data that the target

can receive in any iSCSI PDU. This is a connection- and direction- speciﬁc parameter. The actual value used for targets will be Min (This value, MaxBurstLength) for data-in and solicited data-out data. Min (This value, FirstBurstLength) for unsolicited data.

MaxXmitDataSegmentLenght The maximum amount of data that the target

can transmit in any iSCSI PDU. This is a connection- and direction- speciﬁc parameter. The actual value used for targets will be Min (This value, MaxBurstLength) for data-in and solicited data-out data. Min (This value, FirstBurstLength) for unsolicited data.

MaxBurstLenghth Maximum SCSI data payload in bytes for data-in

or for a solicited data-out sequence. The responder’s number is used. The result function is Min.

FirstBurstLength Maximum SCSI payload, in bytes, of unsolicited

data an initiator may send to the target. Includes immediate data and a sequence of unsolicited Data-Out PDUs. Must be <= MaxBurstLength. The result function is Min.

DefaultTime2Wait Min seconds to wait before attempting connec-

tion and task allegiance reinstatement after a connection termination or a connection reset. The results function is Max. A value of zero means that task reassignment can be done immediately. Also known as Time2Wait.

DefaultTime 2Retain Max seconds that connection and task allegi-

ance reinstatement is still possible following a connection termination or reset. The results function is Min. Zero means no reinstatement is possible. Also known as Time2Retain.

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MaxOutstandingR2T The maximum number of outstanding R2Ts. The

responder’s value is used. The result function is Min.

DataPDUInOrder No indicates that the data PDUs within a sequ-

ence can be in any order. Yes indicates that the data PDUs within a sequence have to be at continuously increasing addresses and that overlays are forbidden. The result function is OR.

DataSequenceInOrder If set to No, the data PDU sequence may be

transferred in any order. If set to Yes, the sequence must be transferred using continuously increasing oﬀsets except for error recovery. The result function is OR.

ErrorRecoveryLevel Recovery levels represent a combination of

recovery capabilities. Each level includes all the capabilities of the lower recovery level. The result function is Min.

OfMaker Turns on or oﬀ the initiator-to-target markers.

The result function is AND

IfMaker Turns on or oﬀ the initiator-to-target markers.

The result function is AND

OfMarkInt The interval value (in 4-byte words) for initia-

tor-to-target markers, measured from the end of one marker to the beginning of the next. The oﬀer can have only a range; the response can have only a single value (picked from the oﬀered range) or Reject.

IfMarkInt Interval value (in 4-byte words) for target-to- ini-

tiator markers. The interval is measured from the end of one marker to the beginning of the next one. The oﬀer can have only a range; the response can have only a single value (picked from the oﬀered range) or Reject.

G-Technology G-RACK 12 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual