Solid State Drives

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12 hours 9 minutes
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welcome to lessen 5.3 solid state drives. An overview of solid state drives 2.5 Saito, N V M E and M dot too.
Let's go ahead and get started.
Solid state drives or SS D's have become popular in the recent years for use in mobile devices, desktop computers and servers. One of the reasons why they're so popular is that they're moving moving parts in the SST hard drive. Basically, it's non volatile ram. Your access
to your data is very, very fast. You can quickly access that memory because it's non violent or memory,
Um, and with speeds that you would get from flash memory, our type of technology. You'll get that in a hard drive, and that's why they're so popular.
They're no delays and access in an information that she would get with Trent traditional magnetic drives
for most laptops and desktop computers. You use the 2.5 satar SST. That's picture here in this slide here,
so let's talk about the N v M e. The Envy Emmy or the non volatile Memory Express is an open, logical device interface specifications developed to allow modern SS D's toe operate at reading right speeds of their flash memory is capable of.
Essentially, it allows flash memory to operate as an SSD directly through the PC. I interface
to the PC I Bus Lane. If you remember with the PC, I bustling speeds that's very fast. There's no state of connections or anything like that. So envy Emmy is a protocol that describes the connection types used to read and write data now. Envy, envy. Emmys are a little bit more expensive than SS these. However,
their speeds are much higher than other Estes D's.
The most common form factors in the Envy and Me are the ad in card. The day I see that you may commonly see the M 0.2 and the u dot to connector types.
So now that brings us to the m 0.2 drives
him 0.2 is another interface type in the SST family m dot to Dr connects directly to the motherboard to an M dot to interface. This gives the drive direct access to the PC I express Bus of the system. There no set of connections evolved, such as in standard SS D drives,
because the M two drives connect directly to the motherboard and the P C i.
E bus. The condemned that connects and they're through puts are a lot more faster. Van Saito. So you can see it speeds as fast *** four gigabytes a second and even faster again, no power or state of connections with the into drives in 40.2 drives.
Now on the m dot to drive. There is a key at the bottom of this Dr plugging into the interface of the motherboard. This could either be key or an M key, or the drive may support both. Check your motherboard specifications to see what is supported. Now the bee key type will enable you to use up to two lanes of the PC I express bus
if you're in doubt. To drive
is an M ke than it's connecting toe, a device that supports the M key on DDE. That would be a maximum of four lanes on the PC Express bus. So let's look at this image here on the on the right. You see, the image on the left has a socket for the bee key inch connector, and right below that the six pins wide
on the right hand side of that image, you'll see the M Key inch connector, and that's five pins wide of the image below and down below. That is a image that shows both the B and the M key and connector. So if your drive has the Beaky,
you're going to support P. C I E by two or up to two lanes.
If you have the M key, it's got a P C B p c I e by four or up to four lanes on the p C i e x rambus.
And that was our lesson for today. We talked about the solid state technology and overview level that we dove down and talked about the N V M E Connection protocol. And we talked about the into drives and specifically with them two drives. We cover the bee key and the M key.
And make sure you know the types that those are for the A plus exam.
So that is our lesson for today. We will see you in the next lesson.
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