The popularity of high speed internet, getting the amount of the number of content based on it as a multimedia-based data development and its gradual increase. The reason is called a recession, but one that is steadily increasing as much as demand for storage.
But also follow them if supply is increased consumer demand, rise to consumers feel the lack of physical data storage to the currently popularized also inevitably lack the capacity units HDD is reality. Moreover, in recent years, consumers look that feel increasingly dissatisfied with the slow speed of the HDD, the HDD market is also dominated want whether it is necessary to change.
Looking at the downside of the HDD, shock, there may be mentioned a data loss, noise, power consumption, access time and transfer rate according to such magnetic. But because of the emerging SSD in an effort to replace them, money is unrealistic because capacity is expected to be some time until popularized. In particular, look at the capacity of the current popularity of SSD HDD until it can be expected to take two years or more.
The trend so far ▲ HDD (Photo Source: Seagate)
Because that the recent RAID system products who use all hybrid products and servers and workstations with the nature of the HDD and SSD will have the popular character has a strongly appeal to consumers, especially to the prohibitive In positions of whilst a normal user RAID solutions are not getting a lot of interest in more affordable to consumers in the form of high performance motherboards preloaded, external storage devices.
In DATAMORE is saebit looked good all the way to the storage device to the brand Micro motto is popularized in recent RAID, introduced the product is DATAMORE TWIN (data collected Twin) This product is neomdeon two RAID systems score the meantime at least 20 to 30 million won presented as a solution of less than 10 million won of the price of a simple external storage device it may be said to have a great significance in this regard. 2 external case with its own RAID processor was not a product that supports RAID software part way through the viscosity is eye-catching.
(data collected Twin)
Supported HDD Type
SteelVine RAID Processor SiI5744
HDD can be mounted
2 (however, Normal mode one can mount)
Supported RAID modes
RAID0, RAID1, NORMAL, BIG
SAFE33, SAFE50, GUI
power adapter, eSATA cable, USB cable
Hangul Guide, jumpers and screws
At first glance the DATAMORE TWIN HDD that boasts a compact enough to be difficult to notice that the two into two cases.
▲ it is not easy to distinguish whether mokchim recognized as one shaped like two.
Mokchim though, is simple yet elegant image with its own internal steel base through the aluminum cover is not an afterthought to the brick like shape and size.
The top and bottom of the HDD to HDD into two structures may be found that the consideration of the internal ventilation to be mounted at predetermined intervals. In particular, the PCB disposed on the bottom surface to the top of the HDD, and a compact with the ventilation structure is to connect the cables.
H / W RAID mode is DATAMORE TWIN is equipped with a Silicon Image's SiI5744 SteelVine RAID processor. Because RAID settings configured in DATAMORE TWIN can keep the data intact internally.Note that support RAID controller or in part, in main board when the system is turned on or connected to other PC has the disadvantage that the data is not maintained.
DATAMORE TWIN is located inside the RESET button for jumpers and RAID settings that can be set to RAID mode. If you change the RAID mode after the power is in the ON state HDD's pressing once the RESET button to give RAID set is over. It is based on the internal jumper for the RAID set as to prevent any problems that may arise cautious about RAID settings and switch settings is liable to be exposed to the outside.
The power LED located on front and HDD1, operation and status LED on HDD2. And it is simply configured, the front side frame can be seen that the ventilation openings for the air inlet located.
The back has a quiet fan and the main power switch and eSATA, USB2.0 port for the vent is located. Usually a simple case 2 is provided with two eSATA port or aneuni not even provide a USB2.0 terminal (eopeuni the main chip for internal RAID configuration can not create a single disk not only provides a USB2.0 or eSATA does.) this section needs to reference.
Product configuration provides a DATAMORE TWIN body, power adapters, HDD mounting screws, jumpers, eSATA and USB cable and manual Hangul default. For the product concept for bogeuphwa Hangul manual has instructions for how to guide and preferences for RAID mode. Even if the beginner seems to be not too difficult to set up RAID.
RAID performance of 3.DATAMORE TWIN
Microsoft Windows VISTA x64 SP1
Intel Core2Quad Q6600
GIGABYTE GA-P35-DS3R (Inten ICH9R, JMB36x)
DDR2 SDRAM 1GB x4EA: 4GB
Seagate Barracuda 7200.11 640GB
Before you mention the simple test environment for testing system it was to gauge its performance by looking at the performance with RAID performance and DATAMORE TWIN on a single disk with built-in ICH9R P35 motherboard.
First, let's look at the performance of a single disk when connected to the eSATA storage devices support the default connection ICH9R.
◀ HDTune Read
◀ HDTune Write
Because even a single disk, but its performance is so excellent model to show the speed exceeds the MAX 110MB / s, rate starting from the outer circumference of the nature of the HDD is displayed as you enter into the inner circumference rate decreases. A rate of the MIN 54MB / s shows the average data rate of 88MB / s.
So let's take a look at the performance of DATAMORE TWIN. Note that the setting of DATAMORE TWIN state is connected to the same HDD 2EA a RAID 0 configuration.
◀ HDTune Read
◀ HDTune Write
MAX 159MB / s (Read), it shows the performance of 147MB / s (Write). But until doubled, it boasts a maximum rate close to 150MB / s.
Section should be noted here is the falling rate decreases while moving to the inner periphery of the HDD MIN 108MB / s (Read), 99MB / s (Write) the test result is that appeared. MAX is actually got a fundamental limitation of the interface processor and RAID jujin did demonstrate a two-fold performance, the performance of the MIN has shown almost twice the performance of 100MB / s of performance. The average transfer rate shows the performance of 140MB / s before and after.
Test himself, to improve performance RAID0 is a natural result. However, it is possible to look in applications requiring a RAID configuration, in that the overall transmission speed can be expected even with the lowest rate of increase and compensate the disadvantages of the conventional HDD.
So it could be used for any purpose? When directly to require ongoing I / O performance, for example, video capture, and when editing can feel the merit in the place requiring a certain I / O performance, it is used for the graphics and stores various kinds of video data and playback can. For instance, whereas when it transmits HD video that require a transfer rate of 5MB / s with only 10 CLIP transmission General HDD overhead it takes (apply the minimum rate), the 20 CLIP transfer is possible when a RAID 0 configuration to provide the advantage that.
Of course, it can be considered an advantage in its own outside of this purpose. The following are supported by the RAID level and its purpose DATAMORE TWIN.
▲ RAID 0: capacity and speed is doubled
RAID0 (striping) is a cross-dispersed stores. The block A and block B, as is the concept of storing the Drive A and Drive B, respectively. Of course, the concept minutely while storing the delay time caused during the storage, while the block A, block B on a different drive to reduce the delay time.
Since this is double the capacity of each drive is a plus A and B, shows the effect of improved I / O speed.
▲ RAID1: If you think simple hardware backup.
RAID1 (mirroring) is simple if you think that hardware backup. I / O is in the form to be processed only by a single continuous backup HDD as the information on the other HDD is internally. Should the original HDD have a problem, the data in the backup HDD of FIG. I / O can be maintained, so one is still the data to the fault I drive concept. Although capacity or net expected to improve the I / O speed, reliability of the data it may also be doubled.
In addition DATAMORE TWIN supports BIG mode, NORMAL mode, SAFE33, SAFE50 mode. BIG mode is simply recognized as a drive that only two combined capacity, even of different capacity HDD is displayed in the combined capacity of the two capacitor. NORMAL mode is to display two HDD connected to a separate drive each DATAMORE TWIN. That is, seemingly with but a single external drive, your PC will recognize the mark as two external drives are recognized. If using two external storage devices with just one DATAMORE TWIN can expect the effect of connecting the two. Note that when eSATA connection to the NORMAL mode should be appropriate eSATA controller supports Port Multiplier (PM).
While testing the DATAMORE TWIN was confirmed that some symptoms. This is limited to those products will not need to refer to.
If a lot to offer the real Motherboard eSATA ports are built-in eSATA port for a separate controller support, the performance of the controller inferior to the performance of the built-in controller on the mainboard is that SouthBridge. (When connected to a reference test on one board ICH9R but demonstrate the performance of MAX 150MB / s, when connected to a JMB36x have shown limited performance enough to 100MB / s.)