We will share some new test results and repeat our old test again with a different method. Here's the results:
Samsung MLC SSD (16 GB)
ad6: 15272MB <SAMSUNG MMBRE16GSMPP-MVA VAM1101Q> at ata3-master SATA150
# diskinfo -c -t /dev/ad6s1d
/dev/ad6s1d
512 # sectorsize
16013910528 # mediasize in bytes (15G)
31277169 # mediasize in sectors
31028 # Cylinders according to firmware.
16 # Heads according to firmware.
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VIA, VT6421, PCI, Sata, Controller, Hardware, BSD, Unix, Linux, Slackware
We'd like to share an experience about PCI Sata controllers with VIA VT6421 chipset and solid state drives. This PCI cards support software raid. You can set raid with jumpers on the card. We have not tested this system with a Windows or another operating system. The test consist on BSD Unix.
We've tested this card on both FreeBSD 8.0 and Slackware Linux 13. To be honest, the card alone is awfull. It gives so much read/write errors on both BSD Unix and Linux.
The card detected both the HDD and...
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SSD, Samsung, BigBoy Slim, Server, SQL, MySQL, Read, Performance
We will share some MySQL results of our BigBoy SSD Slim. The hardware is the same as our previous post. This time the test is based on MySQL queries.
We did a simple sql select query like that:
SELECT * FROM `table` WHERE `field` LIKE '%keyword%';
Executed this query on the same table for keywords at different long. The table contains about 100.000 rows and it's size is about 500 MB.
| Test | SSD | HDD |
| Query 1 | 0.0261 sec | 0.0410 sec |
| Query 2 | 16.2090 sec | 28.2846 sec |
| Query 3 | 21.1690... |
We have bought 16 GB BigBoy (Samsung Chips) Slim MLC SSD last week. In physical size, it's really so slim, thin, small. It's about 1 inch in size. The size advantage of solid state drives really matters.
What about the performance?
First of all, we didn't test the drive with for various factors. We only did simple copy and read tests.
The platform is FreeBSD unix. We formatted the SSD as UFS file system. The motherboard supports Sata 1. So the results are based on Sata 1 only.
We wrote a shell...
Solid state drives write the data into memory cells. This cells are made of floating-gate transistors.
Single Level Cell (SLC)
SLC flash memories store only one bit of data in a single cell. Each cell stores one bit. So SLC memories are capable of faster write. SLC also has the advantage of higher cell endurance and lower power consumption. Although SLC technology has so many advantages, it costs more than MLC. SLC technology is chosed for servers and heavy applications by companies.
Multi...