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Samsung SM863 & PM863 960GB Enterprise SATA III SSD Review

By: Jon Coulter | SSDs in IT/Datacenter | Posted: Jan 20, 2016 2:46 pm
TweakTown Rating: 96%Manufacturer: Samsung

Enclosure / Internals

 

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Both SSDs come in a familiar 2.5" x 7mm all black aluminum alloy enclosure. The front face of the enclosures inform us that these are Samsung solid state drives. The back face of the enclosures have a manufacturer's label that includes the model number, serial number, capacity, shipping firmware, and various other relevant information.

 

 

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The back plate of the enclosure attaches to the front cast piece with three pentalobe screws; two of which are located under the manufacturer's label. The PCB is aligned with two locater pins.

 

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Both PCB's are identical on the front half. Both feature Samsung's 500 MHz tri-core 8-channel ARM-based "Mercury" controller, which is the same controller we previously saw on the 2TB 850 Pro and EVO. One core is dedicated to read operations, one for write operations, and one is dedicated to host interaction.

 

Both feature a single LPDDR3 1024MB DRAM cache package as well as ten tantalum capacitors for power-loss protection. We note a few minor differences in small surface mounted components on the back half of the PCB's. The SM863 (on the left) features eight 128GB V-NAND MLC flash packages, and the PM863 eight 128GB V-NAND TLC flash packages.

 

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The SM863's controller is on the left, PM863's controller on the right. We observe a difference in labeling. We do not know if there are any physical differences between the two, but we do note the drives utilize different firmware revisions.

 

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128GB MLC V-NAND flash package on the left, 128GB TLC V-NAND flash package on the right.

 

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Both drives utilize the same single 1GB LPDDR3 Samsung cache package.

 

 

Specifications and Features

 

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Features include a Serial ATA 6.0Gbps interface, Samsung V-NAND 3D Flash Array, Random Read QOS above 99%, Advanced ECC Engine, End-to-End Data Protection, Power-Loss Protection via a Tantalum capacitor array, S.M.A.R.T monitoring, and Dynamic Thermal Guard protection. Drive management is available through Samsung's SSD Magician DC V2.0 software.

 

SM863 960GB sustained performance specs:

 

  • Sequential 128KB QD32 Read (up to): 520 MB/s
  • Sequential 128KB QD32 Write (up to): 485 MB/s
  • Random 4KB QD32 Read (up to): 97,000 IOPS
  • Random 4KB QD32 Write (up to): 28,000 IOPS
  • Power: 2.2W Read, 2.9W Write, 1.3W Idle

 

Reliability: MTBF 2 million device hours, UBER: 1 per 10^ 17.

 

Endurance: PBW (Petabytes Written): 6.16 PBW equivalent to 3.6 drive writes per day for five years.

 

Warranty: Five-year limited.

 

PM863 960GB sustained performance specs:

 

  • Sequential 128KB QD32 Read (up to): 520 MB/s
  • Sequential 128KB QD32 Write (up to): 475 MB/s
  • Random 4KB QD32 Read (up to): 99,000 IOPS
  • Random 4KB QD32 Write (up to): 18,000 IOPS
  • Power: 2.9W Read, 3.8W Write, 1.3W Idle

 

Reliability: MTBF 2 million device hours, UBER: 1 per 10^ 17.

 

Endurance: PBW (Petabytes Written): 1.4 PBW equivalent to 1.3 drive writes per day for three years.

 

Warranty: Three-year limited.

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