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JBOD  

 
Just a Bunch of Disks (JBOD) refers to a group of hard drives. In JBOD, the 
number of logical drives is equal to the number of physical drives.  This mode 
allows the RAID System to operate as a multi-disk storage enclosure, but 
provides no data redundancy. 

 

JBOD

Disk 1

Disk 2

A

B

C

D

Ä

ß

Ç

µ

 

 Due to the chipset limitations, only cold hot swap is allowed in JBOD mode.  

Therefore, the RAID System must be powered off when replacing any of the 
HDDs in the System. 
 

 The eSATA interface cannot support the JBOD mode.  It is only available 

when connecting under the USB 2.0, FireWire 400, and FireWire 800 interfaces. 
 

 Due to the chipset design, when performing JBOD and only one HDD is 

used, always insert it into the HDD 2 of the HDD slots. 
 

Summary of Contents for DataTale 3.5" SATA HDD 2-bay RAID System

Page 1: ...2010 07 29 Ver02...

Page 2: ...E RAID SYSTEM TO A COMPUTER 16 CONNECTING MULTIPLE DEVICES 18 RAID MODES 19 RAID 0 STRIPING 20 RAID 1 MIRRORING 21 JBOD 22 SETTING THE RAID MODE MANUALLY 23 RAID SWITCH 24 HDD SLOT NUMBER 25 HDD ALLOC...

Page 3: ...Windows 2000 31 Q AS 32 GENERAL 32 HDD CAPACITY 32 DISCREPANCY IN REPORTED ACTUAL SIZE CAPACITY 33 HDD ALLOCATION 33 RAID 0 34 JBOD 34 APPENDIX SPECIFICATIONS 35...

Page 4: ...erference 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 a Class B d...

Page 5: ...urface and avoid all dramatic movement vibration and percussion Do NOT allow water to enter the RAID System unit Installation of additional equipment in the host computer may be required Visit our web...

Page 6: ...ches no IT expertise required Simplifies RAID management no software installation required Monitors system status via LED indicators Prevents over tightened HDDs with auto limiting segmented screws Fe...

Page 7: ...ilable eSATA port USB 2 0 IEEE 1394a or IEEE 1394b port Depend on model MAC Macintosh PowerPC or Intel Core Duo processor 64MB of RAM Mac OS X 10 4 requires 256MB of RAM Mac OS X 10 2 or higher PowerP...

Page 8: ...Front View Rear View eSATA DC IN RAID 2 FireWire 800 2 ports 6 RAID Mode Switch 3 FireWire 400 4 USB 2 0 Type B 5 eSATA Port 7 Power Switch 8 DC IN 9 Lock Slot Port The status indication of each LED i...

Page 9: ...Top Cover View Exposed 1 0 Front Indicator 2 Spare HDD Screws 1 1 9 HDD Slots indicates HDD 1 through HDD 2 1 2 1 2 1 3 Handles...

Page 10: ...front edge 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 the top lid up to r...

Page 11: ...etal 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 connectors...

Page 12: ...nto 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 h...

Page 13: ...andle to make sure the holes glide smoothly on the screw guides Repeat the same procedures for the second HDD The auto limiting segmented screws are designed to prevent the HDDs or and the handles fro...

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: ...on Position both hands on the back edge of the top lid Simultaneously push the lid firmly downward and toward you back to front A click sound would indicate grasp of the top lid security clasp 12 Now...

Page 16: ...nnected to a host computer via one interface 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 2 In...

Page 17: ...DC IN RAID ON 4 When connected the 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 lig...

Page 18: ...AID 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 differe...

Page 19: ...g on the selected RAID Mode combinations of disks is one or more of increased data integrity fault tolerance throughput or capacity when compared to single drives Deleting the current partition prior...

Page 20: ...ering sizes but the storage space added to the array by each disk is limited to the size of the smallest disk Although Striping is an easily implemented and simple configuration Striping should never...

Page 21: ...data from a source HDD to a backup HDD target HDD the source HDD must first be inserted into one of the HDD slots After the host detects the source HDD the target HDD should then be inserted in the ot...

Page 22: ...OD Disk 1 Disk 2 A B C D Due to the chipset limitations only cold hot swap is allowed in JBOD mode Therefore the RAID System must be powered off when replacing any of the HDDs in the System The eSATA...

Page 23: ...etes 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 OFF 2 Use a small flat blade screwdri...

Page 24: ...RAID System on eSATA DC IN RAID ON It is highly recommended to always power off the RAID System before setting or changing the RAID Mode Switch to ensure the changes are accepted by the System RAID S...

Page 25: ...ovided in 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...

Page 26: ...r red blue The red color is for Health condition The blue color is for Access condition When the HDD is not healthy the red LED will be on When the HDD is being accessed the blue LED will flash When H...

Page 27: ...terfaces is necessary If using a PC System safe removal of the RAID System from the host depends on the interface Most current USB and FireWire host controllers handle USB and FireWire devices as exte...

Page 28: ...es 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 Vo...

Page 29: ...indows XP with Service Pack 2 or later Windows 2003 with Service Pack 1 or later Mac OS 10 4 x or later An available PCI Express slot CD ROM or DVD ROM drive Hardware Installation 1 Power off and unpl...

Page 30: ...ovided 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 er...

Page 31: ...Windows 2003 and XP Windows 2000...

Page 32: ...ze capacity However most older host systems cannot support over 2TB of total capacity only Mac OS 10 3 and newer and PC Windows Vista or newer In addition based on the host system you have there may b...

Page 33: ...e bytes under Binary the Decimal calculation system actually presents a greater storage capacity More description on capacity issues can be found at the Seagate website under FAQs http www seagate com...

Page 34: ...and RPM and from the same manufacturer are highly recommended for BEST capacity utilization JBOD Q I cannot do the JBOD under the eSATA connection Why A Due to the chipset design the JBOD mode cannot...

Page 35: ...er 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 Health Access...

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