Network Storage

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Time
8 hours 19 minutes
Difficulty
Beginner
CEU/CPE
8
Video Transcription
00:00
in our next section, we're going to take a look at network storage,
00:03
so big reason that we network is because we have data and information that we want to share.
00:09
There are lots of different ways that we share data.
00:11
Traditionally, we've had file servers on our network,
00:14
and those are basic computer systems that we've had the sole purpose of storing files and serving those files.
00:21
But now, as we move forward, we find that we have so much information that we're managing today, that we've really kind of outgrown the typical hard to drive on the file server, and we need something more.
00:32
So we have network attached storage,
00:34
and this is one method of increasing your storage space on the network.
00:38
Basically, this is just a storage of clients.
00:41
It's just like a hard drive on steroids, if you will,
00:44
it's going to provide file level storage, and it's accessible on the network using some network protocols,
00:51
specifically things like S and B, which stands for server messaging blocks, and NFS, which is network filing systems.
00:59
So those are some protocols that would allow the axis of those particular files
01:04
an alternative to network attached storage is to have a storage area network.
01:10
So you've got a N S and you've got A S A N.
01:14
But with S A. N. You have a specific network designated to store data
01:19
and you're accessing that data usually across a high speed connection.
01:23
So you've got the host layer, which are the individual systems on your network PCs,
01:27
the systems that have the data to store.
01:30
And then you have what's called the fabric lair, which is the media across which the data travels.
01:36
Then you have the storage later, which is whatever your storage devices are in that specific network.
01:44
So how do we connect to the S E n?
01:46
Well, it has to be high speed connectivity of some former fashion.
01:49
There's something called fiber channel over Ethernet
01:53
and that ultimately is going to use fibre channel switches. And that's specifically a layer three switch that's compatible with in a fibre channel environment.
02:01
Ultimately, what we're looking at in this section is a pretty high speed solution. When looking at a fibre channel,
02:08
it's about 10 10 gigabits per second, and we're seeing even more of that today
02:14
so you can see some of these elements or we have had the initiator connecting through the switch to the actual storage area network on the back end.
02:23
There's also an alternative to connect to a storage area network across a nice, cozy environment.
02:30
Back in the day we used to talk a lot about is crazy hard drives, small computer systems interface
02:37
and our servers. We would have I scuzzy devices because I scuzzy provided faster access. There's a lot more functionality with a nice, cozy system.
02:46
Now what we're doing is taking an extension of that.
02:50
The benefit of a nice, cozy environment is you'll notice I'm not using anything with a fiber channel, so I'm able to take advantage into sort of leverage. My existing network infrastructure
03:00
where I'm storing my data is on the back end on my eye scuzzy target area.
03:05
We refer to those spaces or specific storage locations. Biological unit number.
03:09
Ultimately, that's appointed that points to a specific location on the S A N network.
03:15
We do that to office Kate to someone on the outside where specifically the data is being stored
03:22
so that Lun is used to prevent too much information being disclosed and being available
03:30
now
03:30
and Finney Band is a relatively new communications standard, and this is for very high performance environments where we want next to no latency.
03:39
Ultimately, this is going to be in a specific switch network.
03:43
This can be connected to A S, A. N to provide even greater speed. So this is just one of those new technologies
03:51
also to connect to S a N. We might be using the idea of jumbo frames, which means we have an environment where more information can be combined into a single frame.
04:00
That means we'll get my much better performance rather than having lots of little frames in being able to transmit more information in a single frame.
04:11
All right, so just to wrap up with network storage
04:14
network, attached storage devices are storage appliances on the network,
04:17
whereas a storage area network is off site, or at least on a segmented network that you can access either through fibre channel over Ethernet or ice crazy technology
04:29
and find a band can also be a solution for high speed access for storage area networks.
04:33
And another means of providing quick access is through the use of jumbo frames
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