25. Storage Introduction - Oracle Cloud Infrastructure Foundations - video Dailymotion

Psycho Killer

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00:00Welcome to this module on OCI storage services, what they are and how they work.

00:11Before we go and dive deeper into the various storage services available within OCI,

00:18let us look at storage requirements because they are many and varied.

00:22So, first is when you decide on what kind of storage to use, you want to answer whether

00:29you want persistent storage or non-persistent storage.

00:33Then you have to answer what kind of data are you storing, is it database files, is it

00:37videos, is it audios, photos, text, what kind of performance do you need, what kind of capacity

00:43do you need, how many input output per second IOPS, how much is the throughput.

00:48Then you need to decide on durability, how many copies of data you want to maintain.

00:53There is a difference between persistence and durability.

00:56Persistence basically means you safely store the data.

01:00Durability means making multiple copies of the data, replicating the data.

01:05So, in case you are storing them safely, even if one copy goes bad, you still have other

01:11copies to fall back on.

01:14Connectivity is important as well, whether you want local storage or you want network storage,

01:18and how does your application access that storage data.

01:22And finally, the protocol, because that determines what kind of applications you can build, whether

01:26it is block, file, or something as simple as HTTP.

01:31Now, these are some storage requirements, and I am sure there are many more, but you have

01:35to wrestle through these before you decide on what storage services to use.

01:40Let us look at the lineup of OCI storage services.

01:43And I am just going to cover some of the few, the main ones here.

01:47There are others which we will cover in subsequent lessons.

01:51So, the first thing is local NVMe.

01:53Local NVMe means, as you see in the picture here, you have a data center, which we call

01:57as availability domain within OCI.

01:59You have a compute server, and you have a locally attached storage.

02:03So, when you think about local NVMe, think about locally attached storage.

02:07These are NVMe SSDs, super high performance, gives you hundreds of thousands of IOPS, and

02:13you could run your most performance sensitive applications using local NVMe.

02:18Then what we do is, we take this locally stored attached storage, and we move it to a remote

02:24server, a network server.

02:26So, in this picture, you see there is a compute instance, and it is talking to a storage server

02:33which is on the network.

02:35So, the advantage here is, the storage can be truly persistent and durable and extend

02:41beyond the lifetime of the instance itself.

02:44This kind of storage is called block volume.

02:47In this case, the storage, the data is managed as fixed-sized blocks.

02:53So, you create a partition, you create a file system, then you mount the file system, and

02:59that is how your compute instances use the storage service.

03:03So, block volume.

03:04File storage is a similar kind of a storage, still in the same availability domain, but it

03:11is a shared file storage system.

03:14So, in this case, you see two compute instances, and then they have a need to have a shared storage

03:21system, where they can read and write, but the storage is shared.

03:25So, it is very similar to block volume, but the difference here is, you manage the storage

03:32as files and directories.

03:34You do not partition the disk.

03:36You still do some of the things like you mount the file system, and that is how your instances

03:41use the shared storage.

03:44So, think shared, think file storage.

03:47And then finally, we have object storage, which is storage for the web.

03:51So, you have storage.

03:53This is the kind of storage you would use for photos, videos, log files, text files, any

04:00kind of files you store on the web.

04:02Typically, the way it is accessed is you have an internet client who accesses these objects

04:08using simple and familiar HTTP verbs like put and get.

04:14Put meaning you create an object.

04:16Get meaning you download an object.

04:17And so, these are the main storage services which exist within OCI.

04:23Along with that, we have several data migration services.

04:25So, we have two which are related to data transfer, data transfer disk and appliance.

04:30Disk is basically you send us your disks and we migrate the data.

04:34Appliances, you use a much larger appliance to send the data to us.

04:41So, that's it.

04:42A bunch of storage services each suited for a different use cases.

04:47In the next few lessons, we are going to dive deeper into each of them.

04:51Thanks for watching.

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