Not long ago Samsung also changed the designation system for its HDD models. Now digits designate only capacity in gigabytes, two letters before the digits denote a class H — hard disk drive, M or D — mobile or desktop. The last letter denotes a series and an interface. A, manufactured in July The other manufacturers are represented by the following modern hard disk drives of similar capacity and configuration:.
Results of all Samsung drives are grouped in the same order on top of diagrams, while the results of their competitors are published in the bottom part of the diagrams in order to avoid confusion and facilitate analysis. The main hard disk was installed as master on the first channel of the chipset controller, and a hard disk to be tested was installed as master on the second channel of the same controller. That's why their usage in our tests of a standard desktop configuration is well justified.
A hard disk drive to be tested was firmly mounted on a metal rack of a PC case without rubber pads. No additional cooling special coolers and fans was provided for the hard disks. Before the tests, we warmed the hard disks for 20 minutes using a utility with active random access. All the hard disks tested in this review had no problems with overheating and deterioration of characteristics at least during the six days of intensive testing.
Each NTFS partition occupied half of the entire disk capacity that is the second partition started exactly from the second half of the disk. FAT32 partitions were MB, the first one starting at the outer edge of the media on the "fastest" tracks , and the second — exactly from the middle of the media volume. We used AIDA32, H2benchw, and WinBench 99 tests to find out physical characteristics of drives average access time, interface transfer rates, and linear disk transfer rates.
First of all, we are going to publish linear reading graphs click on them to see full-size pictures. The latest Samsung drives demonstrate an unusual picture: no traditional flat steps with a constant rate, no sweeping periodic oscillations as in SpinPoint P80 though the zone structure is distinct in all cases. SpinPoint P80 drives on 80 GB platters were the first Samsung storage drives to use elastic bits per inch technology AKA adaptive formatting from IBM : , when each side of a platter was formatted with individually adjusted track density, in order to fully reveal the performance potential of the existing magnetic recording technology without losing reliability a head with better characteristics records data with higher density and vice versa, which allows to keep BER Bit error rate and the average data density to some degree at a specified level, that is elastic BPI contributes to better quality and faster performance.
But Samsung evidently changed its approach to this technology as well as to the address translator physical into logical. It now resembles Hitachi's modern method the graph for Hitachi Deskstar T7K with adaptive formatting is published above , where the period of platter interleaving within formatting zones has become noticeably smaller, that is you will not see it on a rectified graph, it's partially smoothed over by the address translator.
What concerns linear disk transfer rates, both samples of Pseries GB drives demonstrated excellent results within 75 million bytes per second at maximum, having outperformed the majority of modern desktop ATA drives. Thus, true GB platters allow Samsung hard disk drives to demonstrate excellent linear access performance — even better than in Seagate drives with GB platters or in Maxtor and WD drives with GB platters!
That's why its performance is close to GB Pseries models and the majority of Pseries drives: about 60 million bytes per second at maximum will not break any records today. So we can only wait for the GB T model to enjoy new linear transfer rates in full measure.
However, it would be naive to think that everything depends on linear transfer rates only. Other HDD performance characteristics are sometimes more important in typical user applications. Let's proceed to their analysis. But I wouldn't take it for a disadvantage, as 8 MB buffer makes small performance differences not that critical. That's why manufacturing hard disk drives with this interface is not quite correct now, as it will limit maximum HDD performance. However, we'll wait for the GB model and check it up one more time.
That's good news. But Pseries drives were faster in seek mode. These Samsung drives certainly support seek acoustics control.
Access time in quiet seek mode AAM register contains 0dec or dec grows generally by nearly 2 ms. Seek noise becomes duller nearly inaudible against the rotational noise , though Samsung desktop drives are not that noisy especially high-frequency components even without it that is in regular seek mode. We can try to judge about the efficiency of lazy write firmware procedures and caching data for writing by the drop of the average write access time, measured by the operating system, relative to the read access time with enabled write-back caching.
We use C'T H2benchW results for this purpose. While everything looks quite progressive for the row SP16x4x—SP20x4x—SP25x4x caching random write data gets better , the results of the HDLD are not inspiriting — this hard disk drive is outperformed in this parameter not only by its predecessors, but also by most competitors.
Having compared the results of hard disk drives of the same P series of different capacities, we can draw a conclusion that the average access time for writing in this test is influenced much by the linear disk access rate, which is noticeably higher in the SP25x4x, as their caching algorithms must be the same in this section.
Caching the last but one file size depends not only on the buffer size, but also on the hard disk firmware by the way, results of this test practically don't depend on the choice between FAT and NTFS.
That's an evident improvement in caching algorithms in the latest-gen drives compared to the old P80 — faster writing with the smallest blocks as well as cardinally improved anticipatory reading of large data volumes you can see it with MB test files! But on the other hand, the rate of reading larger files MB at small blocks KB has dropped a little.
There are no significant differences between T and Pseries drives here — they actually use the same micro controller. That's why the SPN is victorious only with the largest files, which just don't fit into cache. It's thanks to the best linear access rate only. First of all, let's see how these drives are optimized for multi-threaded operations.
I traditionally use NBench 2. Multi-threaded write performance demonstrates several interesting issues. First of all, all the three models under review look excellent here, having taken the leading positions.
We can draw a conclusion that lazy write and stream write caching algorithms in modern Samsung drives are implemented on a very high level, only few competitors like Maxtor can compete with them in this respect.
Secondly, the leaders among Samsung drives have higher linear rates. That's understandable. Do you know why? COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm.
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Confirm Action Are you sure you wish to do this? Confirm Cancel. User Panel. Login Register? Don't want to attempt this yourself? If your drive is clicking, power it down immediately! This could be a sign of a mechanical issue, such as a head crash. Bad sectors generally signify surface damage , degrading magnetic head reading capabilities, or the end of life of the hard drive.
The data will need to be manually adjusted and reprogrammed to the PCB. Samsung SPN hard drive. Submit Service Call Samsung SPN hard drive not working? Outsource is experienced with Samsung SPN hard drive data recovery and repairs. We will get your data back so you can get on with your life. There are multiple PCB revisions for this hard drive, so if you will need to match a replacement PCB, it is important that you note the revision number of your current circuit board in addition to the hard drive's model number.
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