Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [ssd]

Acronym for "Solid-State Drive" or "Solid-State Disk". SSDs are hard-drives that use semiconductors or DRAM to store data, usually NAND flash memory, rather than spinning magnetic disks.

SSD is an acronym for "Solid-State Drive" or "Solid-State Disk". They are hard-drives that use solid-state memory technologies to store data, rather than spinning magnetic disks. Most manufacturers use NAND Flash memory to accomplish this, though some use DRAM, MRAM or other memory types. They are sometimes preferred over traditional disks due to read-access times usually being lower, but generally have a shorter lifespan and currently have a higher cost per GB of storage capacity.

Relevant Links:

Wikipedia SSD Entry
PC Mag Article comparing SSDs and HDDs

43 questions
5
votes
3 answers

Does cooling the NAND chips on an SSD negatively affect its reliability?

The problem of heat dissipation in high-performance, small form-factor SSDs is well-known, for example, the paper Transient Thermal Analysis for M.2 SSD Thermal Throttling published in 2018 17th IEEE Intersociety Conference on Thermal and…
比尔盖子
  • 6,064
  • 2
  • 24
  • 51
3
votes
2 answers

M2 Key E - can it host an NVMe SSD?

I found an SBC which has an M2 socket for WiFi cards. It's keying is E. I couldn't decide whether I can plug an M2 NVMe SSD into this socket. Key E normally has PCIe x2, which is not as fast as PCIe x4 for other key types. But still. Can I attach a…
Daniel
  • 937
  • 9
  • 19
3
votes
1 answer

M.2 PCIe x2 and SATA connections and key/notch with SATA/PCIe x4 SSDs

For my current project I am adding an M.2 slot for additional storage. Even though SATA data throughput is more than sufficient I would like to support both SATA and PCIe based SSDs, as I dont know what will be more/less available and affordable in…
L. Heinrichs
  • 605
  • 3
  • 17
3
votes
1 answer

Why erasing SSDs in increments of entire blocks does not damage adjacent cells?

I know that to avoid corruption and damage, SSDs are only erased in increments of entire blocks. But how does that not damage adjacent cells? Why energy-intensive tunneling inhibition isn't necessary when you're whacking a whole bunch of cells at…
Wardruna
  • 33
  • 4
2
votes
2 answers

Utility of shielding a laptop SSD with conductive foil -?

I recently replaced the factory SSD in my Thinkpad X260. The factory SSD came with one side covered in conductive aluminum foil which is grounded to the chassis via the caddy-screw attachment. The replacement SSD has no foil. The factory drive is…
Russ Bain
  • 161
  • 4
2
votes
3 answers

Why don't WD NVMe SSDs have PCIe AC coupling capacitors?

I see no coupling capacitors on PCIE TX lanes. Is it Safe to Remove Coupling Capacitors? Or Is it possible to make capacitors into the chip? Add more photos：
Jue WANG
  • 21
  • 2
2
votes
1 answer

Why do SSDs have a limited lifespan?

Why do solid-state drives even have a limited number of read/write cycles, usually 100,000-300,000 cycles? For hard-disk drives, it is understandable why they wear out. That is because they have moving parts that are in contact with each other. That…
CoastCity Lapse 00crashtest
  • 41
  • 3
2
votes
2 answers

How do drives deal with user overwriting data?

Let's say I create a text file and write "Hello world!" to it. I stick with the default 4096 byte allocation size (assuming NTFS file system). I wonder what happens when I change (overwrite) the data in the file, to for example "Hello hello!" I…
YepNope
  • 31
  • 1
2
votes
2 answers

What is the exact position of the M2 fastener screw's base on the PCB from the slot for 2280 SSD?

I am designing a PCB that uses NVMe m.2 2280 M-Key SSD. I would like to know what is the exact position of the SSD's screw will be located with respect to the SSD slot. The slot that I am using is…
Boovaragan
  • 51
  • 4
2
votes
1 answer

How to add embedded mounting hole screw for the NVMe ssd in a PCB?

I am designing a PCB for CM4 where an NVMe SSD M.2 2280 will be used. I need to add the screw terminal/mounting hole fused into the PCB (ref the image: https://www.corsair.com/corsairmedia/sys_master/productcontent/blog_InstallingMP500-Content-3.jpg…
Boovaragan
  • 51
  • 4
2
votes
0 answers

Trying to Identify Static or Thermal Transfer Tape

I came accross this solidstate drive which is in a custom plasic and metal enclosure. There is a sheet of material cut out between the metal top and the drive. I'm trying to figure out what it is, it's pinker than in the it looks in the picture…
pneveu
  • 21
  • 1
2
votes
2 answers

Are SSDs true random-access devices?

Since all kinds of flash memories feature different transfer rates according to the kind of operation performed at a given moment (e.g., random access reads versus random access writes, random access reads versus sequential reads, etc), could SSDs…
Humberto Fioravante Ferro
  • 191
  • 1
  • 7
2
votes
1 answer

SATA Link layer Idle state primitive synchronization failure

I am currently working on interacting with SSD memory through a FPGA using SATA protocol. I am using a Xilinx KC705 evaluation board and SSD is from Samsung. I have connected the SSD device to the KC705 board through a FMC connector. I have used…
Tapojyoti Mandal
  • 163
  • 1
  • 7
1
vote
1 answer

Searching for a replacement part for an SSD repair

I broke my SSD after applying 28 V and I have to change the component by the red arrows in the picture. The component is marked "FNC1B" and it is QFN10 package. It should be a MOSFET or an optocoupler. Below the component "P LN" is a PTC. The FNC1B…
123 456
  • 25
  • 3
1
vote
1 answer

SSD with Phison PS3111 controller repairing

I broke my SSD after applying 28 V and I am trying to repair it. But need a description of a component that is marked red in the image. I guess it is a fuse or something like that. Could anybody please help?
123 456
  • 25
  • 3
1
2 3