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to paste that in there. And we're going to mount, okay, and it just says it doesn't exist.
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So we'll just Alright, so that can fail because it has nothing to mount to. So we actually
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have to create a directory for it. Okay, so just here in the home directory, I'm just
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20,895,770
going to go make MK dir, and type in Fs. Okay, and then we will just go up, and then we will
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20,903,100
mount it. And so now it should mount to that new directory. So it is mounted. We're going
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to do the same story over here. Okay, so just to save us some time, I'm just going to copy
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these commands over, okay. All right. Oops, we forgot the M there on the front. Okay.
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And then we will just copy over the same command here. And we will also mount Fs, okay, so
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they should both be mounted now. And so I'm just going to do an ls, and we're going to
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go into that directory there. Okay. And we are just going to create any kind of files,
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I'm gonna say, touch on touch, base, your
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dot txt. Okay, so I've touched that file, we cannot do that there. So I'll just type
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in sudo. And so I'll do an ls within that directory. And so that file is there. So now
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if I go over to this one here, and do an ls and go into Fs, and do an ls, there is that
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20,953,590
file. Okay. So that's how you can access files, across instances using DFS. So that's all
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you need to know. So we're, we are done. Okay, so we'll just terminate this instance here,
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okay. And we will also terminate this instance here. Great, we will close that sessions manager,
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we will just kill our instances here. Okay. Because we are all done. And we'll go over
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to DFS. So it's only only costs for when we're consuming stuff, but since we're done with
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it, let's go ahead and tear this down. Okay, and we need to just copy this fella in here.
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And we're all good to go. So there you are, that is EF s. Alright, so we're onto the ZFS
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cheat sheet here. So elastic file system. VFS supports the network files. System version
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four protocol you pay per gigabyte of storage per month. volumes can scale to petabyte size
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storage volumes will shrink and grow to meet current data stored. So that's why it's elastic
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can support 1000s of concurrent connections over NFS. Your data is stored across multiple
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agencies within a region. So you have good durability there can mount multiple EC two
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instances to a single Fs as long as they're all in the same VPC. It creates a mount points
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in all your VPC subnets. So you can mount from anywhere within your VPC and it provides
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21,034,532
read after write consistency. So there you go. That's
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the
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Hey, this is Angie brown from exam Pro. And we are looking at elastic block store also
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known as EBS, which is a virtual hard drive in the cloud create new volumes attached easy
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21,051,360
to instances, backup via snapshots and easy encryption. So before we jump into EBS, I
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wanted to lay some foundational knowledge that's going to help us understand why certain
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storage mediums are better than others based on their use case. So let's talk about IOP.
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So IOP stands for input output per second it is the speed at which non contiguous reads
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21,072,542
and writes can be performed on a storage medium. So when someone says hi IO, there, they're
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saying that this medium has the ability to do lots of small fast reads and writes. Then
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we have the concept of throughput. So this is the data transfer rate to and from the
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storage medium in megabytes per second. Then you have bandwidth, which sounds very similar,
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but it's different. And so bandwidth is the measurement of total possible speed of data
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movement along the network. So to really distinguish between the throughput and the bandwidth,
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we're going to use the pipe in water example. So think of bandwidth as the pipe and throughput
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as the water. Okay, so now let's jump into EBS. So we are now on to talking about EBS
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and it is a highly available durable solution for attaching persistent block storage volumes
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to easy to instances, volumes are automatically replicated within their AZ to protect them
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from component failure. And we have five types of EBS storage to choose from we have general
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purpose provision, I Ops, throughput, optimized HDD, cold, HDD and EBS. Magnetic, okay, and
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so we do have some short definitions here, but we're going to cover them again here.
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