Summary of DM4
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2 table of contents general information ...................................................................................................................... 4 copyright ....................................................................................................................................
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3 mac ............................................................................................................................................................................. 32 disk volume over 2tb ...................................................................................................
Page 4: General Information
4 general information copyright copyright @ 2009 sabio. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written consent of sab...
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5 precautions for the raid system the main circuit board of the raid system is susceptible to static electricity. Proper grounding is required to prevent electrical damage to the raid system unit or other connected devices, including the host computer. Always place the raid system unit on a smooth s...
Page 6: Introduction
6 introduction thank you for purchasing the dm4 3.5” sata hdd 4-bay raid system. The dm4 3.5” sata hdd 4-bay raid system provides massive storage capacity and advanced raid configuration options in a desktop storage device. The raid mode switch allows easy configuration of raid 0 (striping), raid 1 ...
Page 7: System Requirement
7 system requirement to use the 4-bay raid system, the minimum system configuration in the host computer requires the following: pc 266mhz or faster cpu (windows vista requires a minimum 800mhz cpu) 64mb of ram (windows vista requires 512mb of ram) microsoft windows 2000, xp, 2003, or vista one avai...
Page 8: System Unit Views
8 1 po w e r h d d 4 h d d 3 h d d 2 h d d 1 r ai d al e rt led indicators system unit views front view rear view es at a d c i n r a id 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 indic...
Page 9: Top & Cover View (Exposed)
9 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.
Page 10: The Raid System
10 inserting/replacing the hard drives in the raid system 1. Place the raid system with its front view facing you. Position one hand on the front edge and one 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” sou...
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11 (fasten the handles onto the hdds) 3. Place the hdd with the 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 connectors, and align it with the screw ho...
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12 5. Fasten the handle 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 handle side facing you..
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13 7. Insert and fasten the screws, the left one first, then the right one. Left right 8. Finally, test sliding the handle 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 h...
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14 9. Hold the hdd with the metal cover side facing you and the handle attached on the upward position. When inserting the hdd on its reverse side, the 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 indic...
Page 15: Installing
15 11. Place raid system with its front view facing you and the top lid on. Position one 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 clasp. ...
Page 16: Computer
16 connecting the raid system to a computer complete the following steps to connect the raid system to a host computer. The raid system should only be connected to a host computer via one interface. Connection of the system to a computer via two or more interfaces simultaneously is not recommended. ...
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17 3. Turn the power switch to the “on” position. Es at a d c i n r a id hd 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 lights will remain steadily white...
Page 18: Connecting Multiple Devices
18 5. You are now ready to begin using your raid system! Ready to go! Due to compatibility issues, if you use the esata interface to do the data transfer, the silicon image esata host controller is highly recommended. Connecting multiple devices using firewire 400 or 800, you can connect other compu...
Page 19: Raid Modes
19 raid modes a redundant array of independent disks (raid) is a system that utilizes multiple hard drives to share or replicate data among the disks. The benefit, depending on the selected raid mode (combinations of disks), is one or more of increased data integrity, fault-tolerance, throughput or ...
Page 20: Raid 0 (Striping)
20 raid 0 (striping) raid 0 (striping) is a performance-oriented, non-redundant data mapping technique. It combines multiple hard drives into a single logical unit. Instead of seeing several different hard drives, the operating system sees only one large drive. Striping splits data evenly across two...
Page 21: Raid 1 (Mirroring)
21 raid 1 (mirroring) raid 1 (mirroring) consists of at least two drives storing duplicate copies of the same data. In this mode, the data is simultaneously written to two disks. Thus, the storage capacity of a two-disk array is combined into a single disk and the capacity is limited to the size of ...
Page 22: Raid 5
22 raid 5 raid 5 uses block-level striping with parity data distributed across all member disks. It is also called parity raid. Every time a block is written to a disk in a raid 5 disk array, a parity block is generated within the same stripe. A block is composed of many consecutive sectors on a dis...
Page 23: Raid 5 + Hotspare
23 raid 5 + hotspare in the raid 5 + hotspare mode, also called hotstand, the last disk in the system is left empty as backup. When any of the disks in the system fails, the back up disk will automatically be rebuilt to replace the failure disk. Raid 5+hotspare mode provides more than decent data pr...
Page 24: Raid 0+1
24 raid 0+1 in the raid 0+1 mode, data is organized as stripes across multiple disks. And then, the striped disk sets are mirrored. It is usually called “a mirror of stripes”. Raid 0+1 mode provides excellent data protection and fault tolerance. The speed of operation is fast in comparison to other ...
Page 25: Of Hdds (Manually)
25 setting/changing the raid mode & number of hdds (manually) changing the raid 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. Es at a d c i n r a id hd of f 2. Use a small, flat-blade s...
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26 3. Next, use the same small, flat-blade screwdriver to select the number of hdds (hd switch). Es at a d c i n r a id hd hd 4. After setting the new raid mode and the number of hdds, power the raid system “on”. Es at a d c i n r a id hd on it is highly recommended to always power off the raid syst...
Page 27: Raid Switch
27 raid switch raid mode switch raid 0 (striping) raid 1 (mirroring) raid 5 raid 0+1 raid 5+hotspare hd switch hd switch 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 ...
Page 28: Mode
28 number of disks supporting each raid mode raid modes number of 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 1 through 4, consistently s...
Page 29: Hdd Allocation
29 hdd allocation it is highly recommended to use the numbering stickers provided 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 lost if the hdd alloc...
Page 30: Led Indicators
30 led indicators p o w e r h d d 4 h d d 3 h d d 2 h d d 1 r a id a le rt power led x 1 indicators color power on green power off none raid alert led x 1 indicators color healthy none danger blink red error red danger: the raid led will blink if raid status is in danger. For example, raid 5 needs t...
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31 the connection led is only one-color (white). When the hdd is connected, the white led will be on. The connection led also indicates hdd power status and disk rebuild status. When the target hdd is being rebuilt, the white led will blink. The health/access led is dual-color (red/blue). The red co...
Page 32: External Bootup
32 external bootup external bootup may be required if the user has two different operating systems set up in both the host computer and the raid system. Pc the external bootup with different interface: os \ interfaces usb 2.0 firewire esata windows no no yes dos yes no yes linux no no yes mac the ex...
Page 33: System Requirements
33 esata pci express card installation complete the steps provided in this section to install the esata pci express card to use with the raid system. The esata pci express card provides a host computer with two windows and mac compatible esata ports. System requirements windows 2000 or later 32-bit/...
Page 34: Driver Installation
34 driver installation follow the provided prompts to complete the driver installation. For the windows system, the “add new hardware wizard” will open automatically. Insert the installation cd included in the package, navigate to and open the installation file. For mac os, insert the installation c...
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35 windows 2003 and xp: windows 2000:.
Page 36: Q&as
36 q&as general q: how do i choose the proper raid mode for my raid system based on the tasks i need to perform? A: since the rs-m4qo system is a “mass storage” device, which means its size capacity is sufficient for data management, the different raid mode settings can help you administer the enorm...
Page 37: Hdd Allocation
37 file system ntfs fat32 fat (format by win2000 / winxp) fat16 capacity limitation vista: 16384tb xp: 2tb windows: 32gb mac: 2tb 4gb 2gb discrepancy in reported & actual size capacity q: if i have a 750gb hdd, why does the raid system only recognized the hdd available space as to be less than 750gb...
Page 38: Hdd Allocation
38 hdd allocation 1 2 3 4 raid 0 q: if i have 4 hdds, can i create two sets of storage units by using raid 0 mode? A: the rs-m4qo is designed to support 4 hdds, but it cannot create or support two sets of storage units under the raid 0 mode. Raid 1 q: if i inserted 4 hdds into the raid system to do ...
Page 39: Raid 0+1
39 raid 0+1 q: normally when operating under the raid 0+1 mode, two hdds are allowed to fail without losing the data. Is there any special restrictions or limitations for the rs-m4qo? A: as long as the two failed disks are not in the special combination of hdd slots nos. 2&3 or 1&4, the data can be ...
Page 40: Appendix: Specifications
40 appendix: specifications model name rs-m4qo connector esata x 1, usb 2.0 x 1, 1394a x 1, 1394b x 2 hdd support 3.5 ” sata hdd* *identical hdd recommended – same manufacturer, capacity and rpm raid level raid 0 (striping), raid 1 (mirroring), raid 5, raid 5+hotspare, raid 0+1 data transfer speed e...