background image

 

Top & Cover View (Exposed) 

 

 

FRONT Indicator

4 Spare HDD Screws

11

12

 HDD Slots
(indicate HDD 1 through HDD 4)

13

1

2

3

4

14

Handles

 

 
 
 
 

 

 

 

 

Summary of Contents for DM4

Page 1: ...1...

Page 2: ...AID SYSTEM 10 CONNECTING THE RAID SYSTEM TO A COMPUTER 16 CONNECTING MULTIPLE DEVICES 18 RAID MODES 19 RAID MODE COMPARISON LIST 19 RAID 0 STRIPING 20 RAID 1 MIRRORING 21 RAID 5 22 RAID 5 HOTSPARE 23...

Page 3: ...3 DRIVER INSTALLATION 34 VERIFY DRIVER INSTALLATION 34 Mac OS 34 Windows OS 34 Windows 2003 and XP 35 Windows 2000 35 Q AS 36 GENERAL 36 HDD CAPACITY 36 DISCREPANCY IN REPORTED ACTUAL SIZE CAPACITY 37...

Page 4: ...harmful interference This device must accept any interference received including interference that may cause undesired operation This equipment has been tested and found to comply with the limits for...

Page 5: ...stem unit Installation of additional equipment in the host computer may be required Visit our website to download the latest product information updates Do NOT attempt to service this unit yourself Di...

Page 6: ...Configures RAID modes easily using switches no IT expertise required Simplifies RAID management no software installation required Monitors system status via LED indicators Prevents over tightened HDD...

Page 7: ...OS X 10 4 Intel or higher One available eSATA port USB 2 0 IEEE 1394a or IEEE 1394b port Depends on model A 3 5 SATA compatible hard drive is required for the RAID System unit Once the HDDs are forma...

Page 8: ...IEWS Front View Rear View eSATA DC IN RAID HD 2 FireWire 800 2 ports 6 RAID Mode Switch 3 FireWire 400 4 USB 2 0 Type B 5 eSATA Port 7 HD Switch 8 Power Switch 9 DC IN 10 Lock Port Slot The status ind...

Page 9: ...9 Top Cover View Exposed FRONT Indicator 4 Spare HDD Screws 11 12 HDD Slots indicate HDD 1 through HDD 4 1 3 1 2 3 4 1 4 Handles...

Page 10: ...on the back edge of the top lid Simultaneously push the lid in the direction away from you front to back using your thumbs A click sound would indicate the release of the top lid security clasp 2 Lift...

Page 11: ...he metal cover side facing up and ensure that the interface connectors are oriented toward your left side Connectors 4 Position the handle to the HDD end which is facing away from the interface connec...

Page 12: ...onto the HDD by inserting and tightening the screws the left one first then the right one Left Right 6 Now flip the HDD so it is facing you with the PCBA Printed Circuit Board on top and the unfasten...

Page 13: ...dle to make sure that the holes glide smoothly on the screw guides Repeat the same procedures for the rest of HDDs The auto limiting segmented screws are designed to prevent the HDDs or and the handle...

Page 14: ...SmartGuider System won t be able to align and the HDD cannot be inserted 10 Align the handle with the guide rails and slide the HDD into the indicated slot Firmly push downward until a thump sound is...

Page 15: ...e hand on the front edge and one on the back edge of the top lid Simultaneously push the lid firmly downward and toward you back to front A click sound will indicate the grasp of the top lid security...

Page 16: ...rface Connection of the system to a computer via two or more interfaces simultaneously is not recommended 1 Connect the AC DC power adapter eSATA DC IN RAID HD 2 Insert both ends of the USB 2 0 eSATA...

Page 17: ...Power LED light will become steadily green and the HDD LED lights will become white and blink about 15 seconds If the HDDs are inside the RAID System the HDD LED lights will remain steadily white If...

Page 18: ...RAID System may be such as digital video camera another HDD DVD writer and much more However you must use the same interface in order for the Daisy Chain to work The computer will not recognize diffe...

Page 19: ...of increased data integrity fault tolerance throughput or capacity when compared to single drives Deleting the current partition prior to changing RAID modes is highly recommended Using identical HDD...

Page 20: ...ented simple configuration Striping should never be used for mission critical applications The speed of operation is excellent in comparison to other RAID modes In Striping mode it is not possible to...

Page 21: ...e HDD the target HDD should then be inserted in the other HDD tray The RAID System will then recognize the target HDD the rebuild process will begin when the HDD LED starts blinking In Mirroring mode...

Page 22: ...e the parity block is not the identical copy of the source data It is generated via parity calculation RAID 5 mode provides decent data protection and fault tolerance The speed of operation is average...

Page 23: ...ow in comparison to other RAID modes Under the RAID 5 HotSpare mode 4 HDDs in an array are required The storage capacity will become 3 minus 1 totaling only 2 HDD storing capacity But it is limited to...

Page 24: ...pt in RAID 0 Under the RAID 0 1 mode 4 HDDs in an array are required However the storage capacity is only as 2 HDDs which the total will be based on the smallest size of the HDDs RAID 1 RAID 0 1 RAID...

Page 25: ...Mode deletes all data stored on the device If you have saved data in the drives backup all data before changing the RAID Mode 1 Power off the RAID System eSATA DC IN RAID HD OFF 2 Use a small flat bla...

Page 26: ...IN RAID HD HD 4 After setting the new RAID mode and the number of HDDs power the RAID System on eSATA DC IN RAID HD ON It is highly recommended to always power off the RAID System before setting or c...

Page 27: ...witch 2 4 3 4 HotSpare Disk Number Setting If the HD Switch setting is not supported by the RAID mode desired or the number of disk inserted is not the same as recommended the RAID System cannot be cr...

Page 28: ...Disk in RAID RAID 0 Striping 2 or 4 RAID 1 Mirroring 2 RAID 5 3 or 4 RAID 5 HotSpare 4 RAID 0 1 4 HDD SLOT NUMBER 1 2 3 4 It is highly recommended to place the HDDs into the RAID System in order from...

Page 29: ...the package to help identify the HDD allocation Although the HDD slots can help with organization when the hard disks are pull out without remembering their arrangement order the data may be lost if...

Page 30: ...f the disks is not working properly or fails the LED indicator will blink and remind you to take actions Those actions may include replacing a healthy HDD Error The RAID Alert LED will be on in RED if...

Page 31: ...fference between a flashing LED and a blinking LED is that flashing refers to the read write activity and blinking refers to slow but regular pulses SAFE REMOVAL OF THE RAID SYSTEM Safe removal of the...

Page 32: ...Yes No If the computer does not come with eSATA interface and an optional eSATA card is added choosing the card that comes with the built in driver in the operation system is highly recommended Disk V...

Page 33: ...Windows 2000 or later 32 bit 64 bit OS Mac OS 10 4 x or later An available PCI Express slot CD ROM or DVD ROM drive Hardware Installation 1 Power off and unplug your computer 2 Remove the housing of...

Page 34: ...rovided instructions to complete the driver installation Please refer to User s Manual under eSATA Host Card section on our website Verify Driver Installation Mac OS If a driver installation failure e...

Page 35: ...35 Windows 2003 and XP Windows 2000...

Page 36: ...l Lastly if the work requires instant and continuous backup of data such as for a writer or editor then RAID 0 1 would be the best choice since it can provide both high data protection and speed with...

Page 37: ...ytes and Decimal which says that a kilobyte is equal to 1000 bytes Most commonly used to display storage capacity is in Decimal The surprising fact is that even though it seems like you will have more...

Page 38: ...e RAID 5 Q If I have inserted 4 HDDs set the RAID Switch at RAID 5 but have the HD Switch set at 3 HDDs Will this work A Yes you may do so but the RAID System will automatically reset the RAID mode to...

Page 39: ...ones Rebuild Q Does the RAID System have to be connected to the host computer when it is in rebuild mode A No it does not have to be The RAID System can support offline rebuild which means it can perf...

Page 40: ...0 1 Data Transfer Speed eSATA up to 3Gbit sec USB 2 0 up to 480Mbit sec 1394a up to 400Mbit sec 1394b up to 800Mbit sec System Material Aluminum case with plastic parts LED Indicators Power Connection...

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