Saturday, December 19, 2015

Learning into samsung ssd 850 PRO

In the last article, I talk about an ssd vs hdd comparison which you can be found here. In this article, I will spend sometime to learn into samsung ssd 850. Samsung ssd 850 pro is a solid state drive. At this moment, this drive produced a staggering of IOPS 100,000 read IOPS and 90,000 write IOPS[19] . Support sata interface of 6gigabits per seconds.

Additional characteristics of this model.

  • 4 KB aligned random I/O at QD32
  • 10,000 read IOPS, 36,000 write IOPS at QD1
  • 550 MB/s sequential read, 520 MB/s sequential write on 256 GB and larger models
  • 550 MB/s sequential read, 470 MB/s sequential write on 128 GB model[19]

The capacity for this model range from 128GB, 256GB, 512GB, 1024GB, 2048GB. A 2.5inch form factor with a dimension of 100W x 69.85H x 6.8D in millimeter. The primary storage is made of Samsung 3-core MEX controller with DRAM as the caching memory. Caching memory size with respect to the ssd capacity are 256 MB (128 GB) or 512 MB (256 GB & 512 GB) or 1 GB (1 TB) LPDDR2 or 2 GB LPDDR3 respectively. From the official sites, the following performances are outlines.

 Sequential Read         Max. 550 MB/s  
 Sequential Write        Max. 520 MB/s (256 GB/512 GB/1 TB/2 TB)  
                         Max. 470 MB/s (128 GB)  
 4KB Random Read (QD1)   Max. 10,000 IOPS  
 4KB Random Write (QD1)  Max. 36,000 IOPS  
 4KB Random Read (QD32)  Max. 100,000 IOPS  
 4KB Random Write (QD32) Max. 90,000 IOPS  

With this blazing speed, as for me as a software engineer, I really think the speed help me in term of application launching like eclipse and especially code grepping or file finding. But I think this speed is definitely a ideal match for software like cassandra and elasticsearch where disk I/O speed is much sought after. With the number show above and with my previously hdparm comparison, I think it will give very much difference if switch from normal hdd spinning disk to this ssd.

Full support for TRIM, garbage collection, and SMART technology are guaranteed. With a staggering reliability of 2 million hours mean time between failures and 150Terabytes written and TEN YEARS warranty period, I must say I am impressed and convinced. The power consumption is also very low. During active read/write, maximum of 3.5W and 3.0W respectively. If you are using this for laptop which power is always a matter of concern, ssd is a wise decision.

With 24 awards under the belt for this model, I think for the skeptical section of people, it is safe to really start to use ssd. If you have a budget, I think rather than just up the cpu and ram, a switch from hdd to ssd should give very much difference too.

I leave this article with samsung 850 pro ssd videos

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