Welcome back to Cloud Architecture foundations. My fellow propeller heads, This is module 4.2 storage architectures as we begin to start pulling our storage disks and two shared storage pools across computers, hosts and networks. By the end of module four, we will move our storage pools all the way to the cloud.
So last time we worked through disk drive architectures, including spinning disks, flash memory and how flash memory technology is what solid state drives utilize for high performance and lightning fast input output per seconds. Or I ops,
we spent some time talking about the data protection technologies of mirroring complete drives for redundancy and striping data across different drives to combine the performance of multiple drives for fashion performance and limit the risk in such a way that we can lose entire drives and still recover and have access to our critical data.
In this video, we're gonna start pulling our disk architecture within one computer across the network and ultimately in servers dedicated to a single responsibility. Managing your organization storage. We will journey across all the storage attached directly to our servers and then pull them over the network and then ultimately pull them into a dedicated storage
network, a network of only one job
Every once in a while, technology advancements creates the need to create a retro nim. Before the electric guitar, there was just the guitar, but with the invention of the electric guitar, there was need to differentiate the electric guitar from the non electric attire. So the music industry coined the retro Nim term. The acoustic guitar. Until storage was accessible over the network,
there was only the local disc or the storage that was physically attached to our device.
Now the industry uses the retro name Direct Attached Storage or Daz to indicate the storage that it's directly accessible from the host or to the server to which the Daz is attached. All of these different media types from DVD R's two USB drives fall under the term direct attached storage.
But in our case in the network enterprise, Daz has specific meeting. Direct attach storage is a storage that is connected directly to a server or, if you want to sound techie, the storage that is connected directly to the hosts. The internal disk drive of a host on the directly connected external storage array are some examples will really mean by direct attach storage.
Although the implementation of a storage networking technologies gaining popularity,
Daz has remained suitable for localized data access in small environment such as personal computing and workgroups. Daz is classified as internal or external, based on the location of the storage device, with respect to the host in internal dad's architectures, the storage devices internally connected to the host by a serial or parallel bus.
This physical bus has distanced limitations
and can only support a limited number of devices. And these devices take a lot of space inside the host, making maintenance of the other components difficult. On the other hand, with external dad's architectures, the host connects directly to the storage device, and data is access to the block level. In most cases, communication between the host and the storage device
takes place via a scuzzy or FC fibre channel. Protocol.
Compared to internal Daz external Dad's overcomes the distance and device, count limitations and provide centralized management of storage devices.
So there are many benefits to dad's architecture, including lower initial investment compared to storage, networking architecture. Daz is ideal for local provisioning and quick deployments for small environments. Daz is simple to deploy and easy to configure because there's not a lot of parts and it's low in solution, complexity and Dad's just works. So it's reliable.
But, as has its limits
does does not scale well. A storage array has a limited number of porch, which restricts the number of hosts that could directly connect to the storage. When capacities air reached the service, availability may be compromised and Daz environments unused resource is cannot be easily re allocated, resulting in islands of over utilized and underutilized storage pools.
File sharing is, the name implies enables users to share files with other users. However, this approach is not suitable in an enterprise environment, which are large number of users at different locations. Need access to common files. Network based file sharing provides the flexibility to share files over long distances among a large number of users.
File servers use client server technology to enable file sharing over the network.
To address enterprise growth, organizations end up deploying a large number of file servers. The servers will end up being connected to Daz or Sands. This results in an over utilization or underutilization of file servers and storage solutions. In addition, such environments have poor scalability, higher management costs and
have a lot of complexity to them.
Nass has emerged as a solution to these challenges
and, as is a dedicated high performance file sharing and storage device, as enables its clients to share files over an I P network as provides the advantages of server consolidation by eliminating the need for multiple file servers. It also consolidates the stories used by the clients onto a single system, making it easier to manage the storage
as uses, network and file sharing protocols to private access to the file data.
These protocols include TCP I pay for data transfer and common Internet file system sifts and network file system. NFS. Always remember the SCIF sis how Windows Machines uses file sharing over the network and NFS because if it's open network standards is how UNIX operating systems like Apple and Lennox support network file sharing.
A general purpose server can be used to host any application because it runs a general purpose operating system.
Unlike a general purpose server on as devices dedicated to file serving, it has a specialized operating system dedicated to file serving and use uses industry standard protocols.
There are many benefits done as such as comprehensive access to information enabling efficient file sharing and supports one of many configurations this enables on as device to serve many clients simultaneously. And the one too many configuration capabilities includes enabling a client to connect with many Nass devices simultaneously
and as is a lot more efficient than building a bunch of file servers and general computers with general operating systems.
Because in as is purpose built
to file sharing nothing else and as talks all protocol. So any operating system from Windows to the whole array of UNIX kernel such as Apple and Red Hat Lennox in as centralizes storage and simplifies management and as offer scalability as well
because of its high performance in low latent see design and has also offers high availability and hardware. And it supports redundant components and fail over capabilities
and then, as a secure your users are forced to authenticate before accessing files on the files can be locked and can use group policy for role based access rules. But in as does have limitations and when things like requirements for virtualization kick into your data, center.
It's time to go into overdrive and you're ready for a dedicated network of storage and this dedicated network of storage.
It's called a sand or storage area network.
So think of a sand or storage area. Network is a dedicated network of storage devices. San carries data between servers or hosts and storage devices through a fibre channel network or an I P network that uses I Scuzzy protocol a sand enable storage consolidation enable storage to be shared across multiple servers.
This improves the utilization of storage. Resource is compared to direct attach storage architecture
and reduces the total amount of storage and organization needs to purchase and manage. A san also enables an organization to connect geographically dispersed servers and storage.
A san is a network of servers and shared storage devices. Servers and storage are the end points or devices in the sand called nodes. The infrastructure of a sand using fibre channel is an example consists of note ports, cables, connectors and interconnecting devices such as fibre channel switches, along with sand management software and this network
Thean devices. Air notes include hosts,
storage arrays and tape libraries. Each node requires one or more ports to connected this dedicated storage network and talk the language of storage so they use special cards called host bust adapters, H B A's and storage front and controllers or adapters. The cables and connectors can be copper or use optical fiber
switches in the storage network can be smaller first
and then grow into what the industry calls directors, or high end switches that have higher poor counts and better fault tolerance capabilities. And sand management software runs this whole thing from a single pane of glass, providing a view of the sand environment, and enables management of various resource is from one central console.
So it's time to run our storage benchmark tests and see how our new network attached file sharing Storage is operating.
Can you name three types of Daz?
What are three benefits of network attached storage
When you're ready for server virtualization, can you deliver in your goal with Daz?
And how does a node connect to the storage area network? So, after our storage benchmark testing, we know that we have a bad disc in our rage storage system, so we need you to go out there into your network and provide your amazing white glove service and replace the bad two and 1/2 inch flash solid state drive with a replacement and then come back and we'll review our answers together.
Welcome back, and I hope you're right. Group is now back on all solid state transistors. What are three types of dad's death can be. Pretty much any storage medium installed with system are connecting externally to a system Hard drives, CD and DVD drives and USB drives. Just aim a few. There are a lot of benefits to network attacks storage, but three of my favorites are. It's easy to deploy an, as
as our clients have built in software already and just need configured
aren't as is easy to manage, and it's less money than many other types of storage options.
When you're finally ready to dip your data center toes and computers into virtual ization, can you deliver on this business directive by using an as unfortunately, no most nah, solutions won't work in virtualized environments, so we need to grow our storage to NASA's Big Brother, a sand storage area network,
and our node in our storage area network will connect to its dedicated switching infrastructure via its controller card. Oftentimes what we call, ah host bus adapter.
So today we looked at Daz and Dad's types and reviewed network attached storage technology and some of its benefits. And we looked at the really cool storage area networks and technology that we can use when our storage needs air. All grown up, we're out of storage school, and our storage no longer requires the build supervision. Next time, we'll look at file systems, back up systems
and how the eight track tape from the seventies
has made its comeback and is now the backup tape recovery technology of today's data center.
So remember that our hero, Flash Gordon, would never be content with spending this in his storage array. So maybe should consider all flash yourself. So on behalf of all of us at the Cyber Security and I t Learning Team, we wanna wish you and all of the users on your network very happy packets.