| Intel SSD 520 Series Solid State Drive |  |
| Reviews - Featured Reviews: Storage | |
| Written by Olin Coles | |
| Monday, 06 February 2012 | |
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AS-SSD BenchmarkAlex Schepeljanski of Alex Intelligent Software develops the free AS SSD Benchmark utility for testing storage devices. The AS SSD Benchmark tests sequential read and write speeds, input/output operational performance, and response times. Because this software receives frequent updates, Benchmark Reviews recommends that you compare results only within the same version family. Beginning with sequential transfer performance, the Intel SSD 520 Series solid state drive produced speeds up to 504.58 MB/s for reads and 298.28 MB/s writes. Because this benchmark uses compressed data, sequential file transfer speeds are reported lower than with other tools using uncompressed data. For this reason, we will concentrate on the operational IOPS performance for this section. Single-threaded 4K IOPS performance tests deliver 21.70 MB/s read and 62.60 MB/s write, while the 64-thread 4K reads recorded 241.38 MB/s and write performance was 234.08 MB/s. All of these results were extremely similar to the fastest 6GB/s SandForce SF2281 SSDs we've tested.
AS-SSD 64-thread 4KB IOPS performance results are displayed in the chart below, which compares several enthusiast-level storage products currently on the market. In these 64-thread 4KB IOPS performance tests the Intel SSD 520 Series outperformed all other SSDs, even surpassing the OCZ Vertex 3 Max IOPS Edition. The chart below is sorted by total combined performance, which helps illustrate which products offer the best operational input/output under load:
In the next section, Benchmark Reviews tests transfer rates using ATTO Disk Benchmark.
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Comments
While these drives are appreciably more expensive than equally performing models from other companies, one would hope that a lot more testing and quality controls went into making them, and there's no way to test for reliability between brands in a review like this, you need to run tests for a long period of time using large numbers of drives and the expense and time of such an undertaking would be beyond the capabilities of a review site.
I am concerned with the 520's reliance on the bios password for encryption. Isn't the bios password fairly easy to hack? If my laptop 'walks off' is my data really 100% secure or is it readily available to anyone who can garner the bios password?
Although I do not use it personally, it is my understanding that TrueCrypt works perfectly on an SSD.
I think the origin for this mixup is comming from the first sandforce controlled SSDs - they encrypted the data on the memory chips, but users had no way to enter a password since ATA HD security was not supported. back then it was no security enhancement at all. encryption was just used as a cheap way to randomly scatter data over the NAND as a wear leveling tool.
Setting up a ATA HD password with a selfencrypting ssd like the intel 520 series will securly encrypt all data and you wont be able to read or write to the drive without the password. the drive cannot be pluged into another computer and be accessed there. It will show up as a locked drive until you enter the correct ATA master- or user password. you wont even be able to secure erase the drive without a password - better don't loose it or you have to dump your drive. However, your mainburd has to support ATA HD security. That is a still little hard to find...
this is also not what the article you reffere to (SandForce SSD Encryption - Demystified) is stating. the articel you reffered to was mainly questioning the security of such a "black box" solution in spite of an open source solution like truecrypt. The article is also quite old.
to get a clearer view of how it actually works see the document:
##hgst.com/tech/techlib.nsf/techdocs/F08FCD6C41A7A3FF8625735400620E6A/$file/HowToGuide_BulkDataE ncryption_final.pdf
It seems to be just a logical step to use ondisk encryption whenever possible with a SSD since SSDs loose up to 80% performance if you use truecrypt.
@Bill: Yes, ATA HD encryption is sufficient for personal or corporate use.
Best
Bjoern
From your comments, my understanding is that if my motherboard supports ATA Security, I can set a password that is unrelated to the BiOS password and is not stored in the BIOS. Correct?
One other question, if my motherboard does NOT support ATA Security, can the Intel toolkit be used to set the SSD ATA password? Do I then continue to use the toolkit to provide the password and enable access?
1.) Yes. The PW will be hashed and the hash will be saved in the drive. the PW can then be used to decrypted the key used for the encryption of the data on the drive itself. You can also use the drive in another computer supporting ATA security - at least if it is the same mainboard and therefore BIOS implementation of ATA security.
2.) If your BIOS does not support ATA security there is no way to use a password protected disk. the disk would be locked - without a supporting BIOS you cannot enter the password. Most systems would not even boot with a locked drive on any SATA channel. that is also the reason why you cannot set the password using the intel toolkit. imagin you would set a password in windows and then be unable to access your system anymore, because your bios actualy does not support it.
Therefore, the entire handling of the password is quite uncomfortable and you have a risk of loosing your hardware. allways remember - if you loose the password you loose not only the data but also the drive itself. It would be bricked forever.