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USB2+eSATA Bridge Board
ESU2DSATA10 (SiI5744)
for 2x SATA HD; Normal/RAID





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1yr Warranty
Description
Includes power splitter cable (molex type)
Does not include SATA data cables.


Introduction ESU2DSATA10 is USB 2.0 & eSATA to dual SATA RAID Bridge Board ESU2DSATA10 is a selectable hardware RAID Bridge Board with two SATA ports. A true hardware solution,ESU2DSATA10 requires no software to be installed on your machine. You can configure the ESU2DSATA10 to use the following Storage Policies to map the appliance's physical hard drives to virtual drives that are visible to the host computer. BIG (Concatenation) JBOD (Just a Bunch Of Disks) FAST (RAID 0) SAFE (RAID 1) SAFE33 (1/3 to SAFE mode and 2/3 to BIG mode) SAFE50 (1/2 to SAFE mode and 1/2 to BIG mode) GUI (Use the SteelVine Manager GUI to configure the Storage Policy)   BIG: 
The BIG storage policy concatenates a series of physical hard drives as a single large volume; resulting in a seamless expansion of virtual volumes beyond the physical limitations of singularly connected hard drives. The BIG storage policy delivers maximum storage space without a single large capacity and costly hard drive. Any node within a cascaded configuration can be set to BIG.   BIG storage policy sample configuration It is also possible to create a BIG volume using only a single hard disk drive connected to Port 0, and then increase the storage capacity of the volume later by adding another hard disk drive (or another ESU2DSATA10 with at least one hard disk drive) to Port 1 and pressing the Mode Change push-button. The new disk blocks of Port 1 will be concatenated to the end of the disk blocks of Port 0, and any data that is stored on the existing BIG volume will be preserved. However, it is not possible to expand an existing BIG volume by adding another hard disk drive to Port 0 and still preserve any existing data on that volume. JBOD (Just a Bunch Of Disks): 
The JBOD (Just a Bunch of Disks) storage policy enables each hard drive to be seen separately as one drive. When using a SATA host controller, JBOD should only be used if the SATA host controller provides Port Multiplier (PM) support. If a host is not PM-aware, only a single drive is presented (drive 0). No such limitation if using a USB host connection.
JBOD storage policy is available for a standalone (non-cascaded) ESU2DSATA10 or the top-level node of a cascaded configuration, but not for subordinate nodes. Even though you can use the rotary switch to select JBOD mode for any node in a cascaded configuration, only the first JBOD volume of any subordinate node is detected by your host. Therefore, selecting JBOD mode for any subordinate node is not recommended.
In a JBOD configuration, the ESU2DSATA10 directly exposes each physical drive.   JBOD storage policy sample configuration FAST (Striping): 
The FAST storage policy distributes access across all hard disks, also called striping (equivalent to RAID 0). FAST presents the best data speed but no data redundancy. FAST storage policy accelerates hard disk operating speed by using many disks in parallel. Hard drive data segments are written to different disks simultaneously which increases performance while sacrificing data redundancy.
To implement the FAST storage policy, the ESU2DSATA10 creates a single virtual volume that is striped across both hard drives, with a storage capacity that is equal to the sum of both hard disk drives.
It is possible to set any node within a cascaded configuration to FAST, although there is no performance benefit when using multiple layers of striping.   FAST storage policy sample configuration SAFE (Mirroring): 
The SAFE storage policy stores all data in duplicate on separate drives to protect against data loss due to drive failure. One drive mirrors the other at all times, equivalent to RAID 1. Every write operation goes to both drives. SAFE provides the highest level of data protection for critical data that you cannot afford to lose if a hard drive fails, but halves the amount of storage capacity because all data must be stored twice. The resulting storage capacity of the virtual SAFE volume will be equivalent to the size of one hard drive (if both drives are the same) or the smaller of the two drives (if they are different).
If one drive fails, the SAFE volume is still usable, but it is in a vulnerable state because its mirrored hard drive is inaccessible. When the offline drive comes back online, the appliance begins a rebuild process immediately to restore data redundancy. A message box appears in the GUI to notify you that a rebuild is in progress.
Although the volume remains available during the rebuild process, the volume is susceptible to data loss through damage to the remaining drive until redundancy is restored at the end of the rebuild and verification process. Host access takes precedence over the rebuild process. If you continue to use the SAFE volume during the rebuild, the rebuild process will take a longer time to complete, and the host data transfer performance will also be affected. Any node within a cascaded configuration can be set to SAFE, but it is more efficient to use the SAFE policy at the lowest possible level within the hierarchy.
It is also possible to create a SAFE volume using one hard disk drive connected to Port 0 of the ESU2DSATA10, although no mirroring will occur until a second hard disk drive is connected to Port 1. With only one hard disk drive connected, the SAFE volume will be available, although no data protection will be provided until a second hard disk drive is connected.   SAFE storage policy sample configuration SAFE 33: 
The SAFE33 storage policy creates two virtual volumes; one SAFE volume and one BIG volume, and should be used when you need the high reliability for some of your data (with the added overhead of mirroring) but you don’t need high reliability for the remainder of your data. SAFE33 reduces the cost of additional hard drives in operations where non-critical data could be lost without severe consequences.
SAFE33 uses a SAFE volume that is mirrored across two hard drives to protect your critical data in the event a hard drive failure. If one drive fails the SAFE volume is retrievable although the BIG volume is not. When you replace the failed drive, the SAFE volume is automatically rebuilt on to the replacement drive.
For example, if you are using a video editing application that stores the primary source data and also uses some temporary storage for editing, you need protected storage that is offered by SAFE for the primary source data, but you do not need protected storage for the temporary data. Therefore, the combination of SAFE and BIG would be the most efficient utilization of your available storage capacity. If either hard drive fails the primary data stored on the SAFE volume would still be available whereas the temporary data stored on the BIG volume would be lost.
The size of the SAFE volume of a SAFE33 policy will be one-third of the size of one hard drive (if they are equal) or one-third of the size of the smaller (if they are not equal.) The size of the BIG volume will be the combination of all remaining capacities. Example: In Figure below, assume that Drives A and B are 300 GB each. When the SAFE33 Storage Policy is selected, the resulting virtual volumes will include SAFE volume of 100 GB (1/3 of 300 GB) and a BIG volume of 400 GB (the remaining capacity after allocating 100 GB from each of the hard drives).
  SAFE33 storage policy sample configuration SAFE 50: 
The SAFE50 storage policy creates two virtual volumes; one SAFE volume and one BIG volume, and should be used when you need the high reliability for some of your data (with the added overhead of mirroring) but you don’t need high reliability for the remainder of your data. SAFE50 reduces the cost of additional hard drives in operations where non-critical data could be lost without severe consequences.
SAFE50 uses a SAFE volume that is mirrored across two hard drives to protect your critical data in the event a hard drive failure. If one drive fails the SAFE volume is retrievable although the BIG volume is not. When you replace the failed drive, the SAFE volume is automatically rebuilt on to the replacement drive.
For example, if you are using a video editing application that stores the primary source data and also uses some temporary storage for editing, you need protected storage that is offered by SAFE for the primary source data, but you do not need protected storage for the temporary data. Therefore, the combination of SAFE and BIG would be the most efficient utilization of your available storage capacity. If either hard drive fails the primary data stored on the SAFE volume would still be available whereas the temporary data stored on the BIG volume would be lost.
The size of the SAFE volume of a SAFE50 policy will be one-half of the size of one hard drive (if they are equal) or one-half of the size of the smaller (if they are not equal). The size of the BIG volume will be the combination of all remaining capacities. Example: In Figure below, assume that Drives A and B are 300 GB each. When the SAFE50 Storage Policy is selected, the resulting virtual volumes will include SAFE volume of 150 GB (1/2 of 300 GB) and a BIG volume of 300 GB (the remaining capacity after allocating 150 GB from each of the hard drives).
  SAFE50 storage policy sample configuration   Note: When using a SATA host connection, you must have a PM (Port Multiplier) aware host adapter when using SAFE33 (or SAFE50) on the top level node of a cascaded configuration so that ALL volumes can be detected by the host. If your SATA host adaptor is not PM aware, then ONLY the SAFE volume will be detected and the BIG volume will not be accessible. No such limitation exists when using a USB host connection.
For subordinate nodes in a cascaded configuration, it is possible to configure a SAFE33 (or SAFE50)storage policy, although you will only see the SAFE volume from that node. Therefore, the SAFE33 (or SAFE50) storage policy should only be used at the top-level node of a cascaded configuration.
In this mode, the Schedule/Verify option is enabled. Features USB 2.0 & eSATA to dual SATA RAID Bridge Board: Host Link One eSATA Signal 7pin Receptacle Connector Serial ATA Gen2m compliance eSATA and 2-meter cable support 3 Gbps (auto-negotiates to 1.5 Gbps) Compatible with PM aware and non-PM
aware hosts Allows multiple drives to be accessed by non-
PM aware drive hosts Supports NCQ One eSATA Link&ACT LED One USB B-Type connector Complies with USB 2.0 specification 480 Mb/s (can auto-negotiate to 12 Mb/s) Compatible with OHCI / UHCI / EHCI hosts Supports up to four LUNs Supports Mass Storage Class One USB Link&ACT LED Device Link Two SATA Signal 7pin Latch Connector Serial ATA Gen2m compliance eSATA and 2-meter cable support 3 Gbps (auto-negotiates to 1.5 Gbps) Independent 8KB FIFO / Port Power management capabilities Supports hot plug Supports ATAPI & asynchronous notification Provides device Link and Activity LED (4 pin header) for each SATA port. Drive Locking Which helps protect user's data by allowing them to password lock 
directly attached and cascaded drives.
Backup Button ESU2DSATA10 supports single-button backup through third-party 
applicationsfor simple and worryifree data protection. Failure Alarm Buzzer and Switch Volume degradation (RAID-1) or unavailability (JBOD,Big, Fast)
will be marked by turning on the alarm Buzzer for the node that
experienced this behavior. eSATA-Based Capacity Expansion With eSATA-based capacity expansion, the capacity of ESU2DSATA10 
enabled appliance can be easily expanded either by adding additional 
drives directly or by adding additional ES2DSATA10 enabled devices 
in a cascaded topology. These additional drives will dynamically 
appear (in BIG, SAFE33 or SAFE50) to the host system as increased 
storage capacity in the existing volume.   Physical Dimensions 52.8(D) x 83.3(W) x 21.56(H) SCSI I 50pin Low Density Centronics Connector Form Factor 
(Fit to most standard SCSI enclosure) Host System Requirements PC Systems Intel Pentium-III 500MHz equivalent or faster Windows 2000, XP, 2003 Server or Windows Vista with the latest Service Packs CD-ROM drive 64 MB of RAM (minimum) 250 MB of free disk space Super VGA (800 x 600) or higher resolution display with at least 256 colors Mouse or compatible pointing device SATA connection: SATA host controller with Port Multiplier support and associated software drivers USB connection: USB 1.0 or 2.0 direct host connection or USB hub Macintosh Systems PowerMac G5, MacBook Pro or Mac Pro MacOS X, 10.4.8 (or later) CD-ROM drive Mouse or compatible pointing device SATA connection: SATA host controller with Port Multiplier support and associated software drivers USB connection: USB 1.0 or 2.0 direct host connection or USB hub Certifications RoHS Test : Pass  
Specifications
Specifications

General

Stock code IB-BUE
Series USB2+eSATA Bridge Board
Model ESU2DSATA10 (SiI5744)
Type for 2x SATA HD; Normal/RAID
ROHS Y
Date added 04/07/2007

ESU2DSATA10 (SiI5744) Spec Information

Platter size 3.5"
Platter (alternate) 2.5"
Guarantee 1yr
RAID 0:1:JBOD:
RAID Levels JBOD,FAST (Striping),SAFE (Mirroring),SAFE33,SAFE50

Software

ESU2DSATA10 (SiI5744) Speed

Physical

Weight (kg) 0.15kg
Links
Video
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USB2+eSATA Bridge Board ESU2DSATA10  (SiI5744) for 2x SATA HD;  Normal/RAID
USB2+eSATA Bridge Board ESU2DSATA10  (SiI5744) for 2x SATA HD;  Normal/RAID

Stock codeIB-BUE
Quick code16348



USB2+eSATA Bridge Board
ESU2DSATA10 (SiI5744)
for 2x SATA HD; Normal/RAID



ESU2DSATA10  (SiI5744) review star 1ESU2DSATA10  (SiI5744) review star 2ESU2DSATA10  (SiI5744) review star 3ESU2DSATA10  (SiI5744) review star 4ESU2DSATA10  (SiI5744) review star 5 5/6 Reviews








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Description

USB2+eSATA Bridge Board ESU2DSATA10 (SiI5744) for 2x SATA HD; Normal/RAID


Unbranded ESU2DSATA10  (SiI5744) logo

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ESU2DSATA10 SiI5744 Key features


1yr Warranty


Includes power splitter cable (molex type)
Does not include SATA data cables.


Introduction

ESU2DSATA10 is USB 2.0 & eSATA to dual SATA RAID Bridge Board

ESU2DSATA10 is a selectable hardware RAID Bridge Board with two SATA ports. A true hardware solution,ESU2DSATA10 requires no software to be installed on your machine.

You can configure the ESU2DSATA10 to use the following Storage Policies to map the appliance's physical hard drives to virtual drives that are visible to the host computer.

  • BIG (Concatenation)
  • JBOD (Just a Bunch Of Disks)
  • FAST (RAID 0)
  • SAFE (RAID 1)
  • SAFE33 (1/3 to SAFE mode and 2/3 to BIG mode)
  • SAFE50 (1/2 to SAFE mode and 1/2 to BIG mode)
  • GUI (Use the SteelVine Manager GUI to configure the Storage Policy)

 

BIG: 
The BIG storage policy concatenates a series of physical hard drives as a single large volume; resulting in a seamless expansion of virtual volumes beyond the physical limitations of singularly connected hard drives. The BIG storage policy delivers maximum storage space without a single large capacity and costly hard drive. Any node within a cascaded configuration can be set to BIG.

 
BIG storage policy sample configuration

It is also possible to create a BIG volume using only a single hard disk drive connected to Port 0, and then increase the storage capacity of the volume later by adding another hard disk drive (or another ESU2DSATA10 with at least one hard disk drive) to Port 1 and pressing the Mode Change push-button. The new disk blocks of Port 1 will be concatenated to the end of the disk blocks of Port 0, and any data that is stored on the existing BIG volume will be preserved. However, it is not possible to expand an existing BIG volume by adding another hard disk drive to Port 0 and still preserve any existing data on that volume.

JBOD (Just a Bunch Of Disks): 
The JBOD (Just a Bunch of Disks) storage policy enables each hard drive to be seen separately as one drive. When using a SATA host controller, JBOD should only be used if the SATA host controller provides Port Multiplier (PM) support. If a host is not PM-aware, only a single drive is presented (drive 0). No such limitation if using a USB host connection.
JBOD storage policy is available for a standalone (non-cascaded) ESU2DSATA10 or the top-level node of a cascaded configuration, but not for subordinate nodes. Even though you can use the rotary switch to select JBOD mode for any node in a cascaded configuration, only the first JBOD volume of any subordinate node is detected by your host. Therefore, selecting JBOD mode for any subordinate node is not recommended.
In a JBOD configuration, the ESU2DSATA10 directly exposes each physical drive.

 
JBOD storage policy sample configuration

FAST (Striping): 
The FAST storage policy distributes access across all hard disks, also called striping (equivalent to RAID 0). FAST presents the best data speed but no data redundancy. FAST storage policy accelerates hard disk operating speed by using many disks in parallel. Hard drive data segments are written to different disks simultaneously which increases performance while sacrificing data redundancy.
To implement the FAST storage policy, the ESU2DSATA10 creates a single virtual volume that is striped across both hard drives, with a storage capacity that is equal to the sum of both hard disk drives.
It is possible to set any node within a cascaded configuration to FAST, although there is no performance benefit when using multiple layers of striping.

 
FAST storage policy sample configuration

SAFE (Mirroring): 
The SAFE storage policy stores all data in duplicate on separate drives to protect against data loss due to drive failure. One drive mirrors the other at all times, equivalent to RAID 1. Every write operation goes to both drives. SAFE provides the highest level of data protection for critical data that you cannot afford to lose if a hard drive fails, but halves the amount of storage capacity because all data must be stored twice. The resulting storage capacity of the virtual SAFE volume will be equivalent to the size of one hard drive (if both drives are the same) or the smaller of the two drives (if they are different).
If one drive fails, the SAFE volume is still usable, but it is in a vulnerable state because its mirrored hard drive is inaccessible. When the offline drive comes back online, the appliance begins a rebuild process immediately to restore data redundancy. A message box appears in the GUI to notify you that a rebuild is in progress.
Although the volume remains available during the rebuild process, the volume is susceptible to data loss through damage to the remaining drive until redundancy is restored at the end of the rebuild and verification process. Host access takes precedence over the rebuild process. If you continue to use the SAFE volume during the rebuild, the rebuild process will take a longer time to complete, and the host data transfer performance will also be affected.

Any node within a cascaded configuration can be set to SAFE, but it is more efficient to use the SAFE policy at the lowest possible level within the hierarchy.
It is also possible to create a SAFE volume using one hard disk drive connected to Port 0 of the ESU2DSATA10, although no mirroring will occur until a second hard disk drive is connected to Port 1. With only one hard disk drive connected, the SAFE volume will be available, although no data protection will be provided until a second hard disk drive is connected.

 
SAFE storage policy sample configuration

SAFE 33: 
The SAFE33 storage policy creates two virtual volumes; one SAFE volume and one BIG volume, and should be used when you need the high reliability for some of your data (with the added overhead of mirroring) but you don’t need high reliability for the remainder of your data. SAFE33 reduces the cost of additional hard drives in operations where non-critical data could be lost without severe consequences.
SAFE33 uses a SAFE volume that is mirrored across two hard drives to protect your critical data in the event a hard drive failure. If one drive fails the SAFE volume is retrievable although the BIG volume is not. When you replace the failed drive, the SAFE volume is automatically rebuilt on to the replacement drive.
For example, if you are using a video editing application that stores the primary source data and also uses some temporary storage for editing, you need protected storage that is offered by SAFE for the primary source data, but you do not need protected storage for the temporary data. Therefore, the combination of SAFE and BIG would be the most efficient utilization of your available storage capacity. If either hard drive fails the primary data stored on the SAFE volume would still be available whereas the temporary data stored on the BIG volume would be lost.
The size of the SAFE volume of a SAFE33 policy will be one-third of the size of one hard drive (if they are equal) or one-third of the size of the smaller (if they are not equal.) The size of the BIG volume will be the combination of all remaining capacities.

Example: In Figure below, assume that Drives A and B are 300 GB each. When the SAFE33 Storage Policy is selected, the resulting virtual volumes will include SAFE volume of 100 GB (1/3 of 300 GB) and a BIG volume of 400 GB (the remaining capacity after allocating 100 GB from each of the hard drives).

 
SAFE33 storage policy sample configuration

SAFE 50: 
The SAFE50 storage policy creates two virtual volumes; one SAFE volume and one BIG volume, and should be used when you need the high reliability for some of your data (with the added overhead of mirroring) but you don’t need high reliability for the remainder of your data. SAFE50 reduces the cost of additional hard drives in operations where non-critical data could be lost without severe consequences.
SAFE50 uses a SAFE volume that is mirrored across two hard drives to protect your critical data in the event a hard drive failure. If one drive fails the SAFE volume is retrievable although the BIG volume is not. When you replace the failed drive, the SAFE volume is automatically rebuilt on to the replacement drive.
For example, if you are using a video editing application that stores the primary source data and also uses some temporary storage for editing, you need protected storage that is offered by SAFE for the primary source data, but you do not need protected storage for the temporary data. Therefore, the combination of SAFE and BIG would be the most efficient utilization of your

available storage capacity. If either hard drive fails the primary data stored on the SAFE volume would still be available whereas the temporary data stored on the BIG volume would be lost.
The size of the SAFE volume of a SAFE50 policy will be one-half of the size of one hard drive (if they are equal) or one-half of the size of the smaller (if they are not equal). The size of the BIG volume will be the combination of all remaining capacities.

Example: In Figure below, assume that Drives A and B are 300 GB each. When the SAFE50 Storage Policy is selected, the resulting virtual volumes will include SAFE volume of 150 GB (1/2 of 300 GB) and a BIG volume of 300 GB (the remaining capacity after allocating 150 GB from each of the hard drives).

 
SAFE50 storage policy sample configuration

 

Note:

When using a SATA host connection, you must have a PM (Port Multiplier) aware host adapter when using SAFE33 (or SAFE50) on the top level node of a cascaded configuration so that ALL volumes can be detected by the host. If your SATA host adaptor is not PM aware, then ONLY the SAFE volume will be detected and the BIG volume will not be accessible. No such limitation exists when using a USB host connection.
For subordinate nodes in a cascaded configuration, it is possible to configure a SAFE33 (or SAFE50)storage policy, although you will only see the SAFE volume from that node. Therefore, the SAFE33 (or SAFE50) storage policy should only be used at the top-level node of a cascaded configuration.
In this mode, the Schedule/Verify option is enabled.

Features

USB 2.0 & eSATA to dual SATA RAID Bridge Board:

Host Link

  • One eSATA Signal 7pin Receptacle Connector
    • Serial ATA Gen2m compliance
    • eSATA and 2-meter cable support
    • 3 Gbps (auto-negotiates to 1.5 Gbps)
    • Compatible with PM aware and non-PM
      aware hosts
    • Allows multiple drives to be accessed by non-
      PM aware drive hosts
    • Supports NCQ
  • One eSATA Link&ACT LED
  • One USB B-Type connector
    • Complies with USB 2.0 specification
    • 480 Mb/s (can auto-negotiate to 12 Mb/s)
    • Compatible with OHCI / UHCI / EHCI hosts
    • Supports up to four LUNs
    • Supports Mass Storage Class
  • One USB Link&ACT LED

Device Link

  • Two SATA Signal 7pin Latch Connector
    • Serial ATA Gen2m compliance
    • eSATA and 2-meter cable support
    • 3 Gbps (auto-negotiates to 1.5 Gbps)
    • Independent 8KB FIFO / Port
    • Power management capabilities
    • Supports hot plug
    • Supports ATAPI & asynchronous notification
  • Provides device Link and Activity LED (4 pin header) for each SATA port.

Drive Locking

  • Which helps protect user's data by allowing them to password lock 
    directly attached and cascaded drives.


Backup Button

  • ESU2DSATA10 supports single-button backup through third-party 
    applicationsfor simple and worryifree data protection.

Failure Alarm Buzzer and Switch

  • Volume degradation (RAID-1) or unavailability (JBOD,Big, Fast)
    will be marked by turning on the alarm Buzzer for the node that
    experienced this behavior.

eSATA-Based Capacity Expansion

  • With eSATA-based capacity expansion, the capacity of ESU2DSATA10 
    enabled appliance can be easily expanded either by adding additional 
    drives directly or by adding additional ES2DSATA10 enabled devices 
    in a cascaded topology. These additional drives will dynamically 
    appear (in BIG, SAFE33 or SAFE50) to the host system as increased 
    storage capacity in the existing volume.

 

Physical Dimensions
  • 52.8(D) x 83.3(W) x 21.56(H)
  • SCSI I 50pin Low Density Centronics Connector Form Factor 
    (Fit to most standard SCSI enclosure)
Host System Requirements

PC Systems

  • Intel Pentium-III 500MHz equivalent or faster
  • Windows 2000, XP, 2003 Server or Windows Vista with the latest Service Packs
  • CD-ROM drive
  • 64 MB of RAM (minimum)
  • 250 MB of free disk space
  • Super VGA (800 x 600) or higher resolution display with at least 256 colors
  • Mouse or compatible pointing device
  • SATA connection: SATA host controller with Port Multiplier support and associated software drivers
  • USB connection: USB 1.0 or 2.0 direct host connection or USB hub

Macintosh Systems

  • PowerMac G5, MacBook Pro or Mac Pro
  • MacOS X, 10.4.8 (or later)
  • CD-ROM drive
  • Mouse or compatible pointing device
  • SATA connection: SATA host controller with Port Multiplier support and associated software drivers
  • USB connection: USB 1.0 or 2.0 direct host connection or USB hub
Certifications
  • RoHS Test : Pass

 




Specifications

General

Stock code IB-BUE
Series USB2+eSATA Bridge Board
Model ESU2DSATA10 (SiI5744)
Type for 2x SATA HD; Normal/RAID
ROHS Y
Date added 04/07/2007

ESU2DSATA10 (SiI5744) Spec Information

Platter size 3.5"
Platter (alternate) 2.5"
Guarantee 1yr
RAID 0:1:JBOD:
RAID Levels JBOD,FAST (Striping),SAFE (Mirroring),SAFE33,SAFE50

Software

ESU2DSATA10 (SiI5744) Speed

Physical

Weight (kg) 0.15kg
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USB2+eSATA Bridge Board ESU2DSATA10 (SiI5744) reviews


11/11/2014 | |  Flag |
Customer has rated the product, but left no comment
23/03/2010 | Luca Sasdelli | IT Flag |
A very small but powerful controller. I'm surprised in seeing this tiny controller being full-featured and easy to manage. The floppy-type power connector makes it even easier to install. Very useful the double configuration, with a simple rotary switch or via interface; good alarm capabilities, with on-board buzzer and e-mail notification via interface. And excellent the possibility to make it visible as a whole disk either via USB or eSata. Very satisfied!
05/02/2010 | | GB Flag |
Pros:
This item is the most cost effective way to create true hardware RAID systems that I have found. It handles RAID1 (SAFE) beautifully with automatic directional cloning. The USB connection made testing and understanding all of the different functions a little easier.

Cons:
The unit seems to max out at about 110MB/s, so the benefits of RAID0 (FAST) disappear as your drives get faster than 55MB/s. It can be a little tricky to force dirty disks into a new configuration, but once you know how, it's really easy.

Other thoughts:
RAID1 is its most useful function, in my opinion. These can be layered to give large concatenations, and RAID10, but with a max throughput of 110MB/sec the RAID10 is usually not very useful.

Here is the method I found works well for reconfiguring disk layouts:
1) switch to Big
2) press Reset and wait 20 seconds
3) switch to desired mode
4) press Reset and wait 20 seconds
5) you may need to reboot your system
It's pretty simple.
27/02/2009 | | GB Flag |
I bought a USB2+eSATA Bridge Board "ESU2DSATA10 (SiI5744)" very good produce
It war a nice expirace to bye at span.com fast handeling and delivery, even thoug i live in denmark, and the product is very fine, it does the trick, that i orderet it for so everything was a good expirence!
28/10/2008 | | GB Flag |
i have buy a LaCie Extern Hard Drive at begin 2008 LaCie 2big Quadra ±400€. I had to quickly buy the same type of hard drive that LaCie and I find this product and economic my surprise I see that make more thing. the only snag is the interface or I would have preferred to have also firewire. it is a great product
09/04/2008 | | GB Flag |
Good board, versatile hardware-based RAID with HDDs and can support ATAPI devices too (setting up in JBOD mode), now I have it connected to one DVD-writer and one BD-writer; this seems to render the USB connection unavailable, but hey I have eSata on my system... Works fine with old SATA-to-ATA converters (2003 model based on a Silicon Image bridge chip). Connected to Jmicron 363 host controller, during bootup only the first port (P1) is recognised, then in OS the second port becomes available, if installed the JM363 RAID driver. Satisfied!
06/03/2008 | | GB Flag |
I bought 2 of these to raid up my iram drives, I had problems with these units setting up a raid0 (fast) array, the computer would frease reading the i-ram drives. I have had to place these in concationation mode (big) losing the desired speedup but hey it works. I am going to try them with 2 160G hdds and see if it's just the Iram's that they don't like.
overall though the units seam reliable when you get them running and are reasonably fast.


* Image courtesy of stockimages at FreeDigitalPhotos.net
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