NAS vs SAN - Network Attached Storage vs Storage Area Network
2018 ж. 19 Шіл.
1 804 997 Рет қаралды
What is the difference between a NAS (network attached storage) and a SAN (storage area network)?
Here is an example of a NAS (affiliate) amzn.to/2VgnRgD
What is a NAS?
What is a Storage Area Network?
#NAS #SAN #NETWORKATTACHEDSTORAGE
I am a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Here is an example of a NAS (affiliate) amzn.to/2VgnRgD
Thank you so much for this video, I am about to have an exam within 2 hours and I managed to understand this topic within minutes. Keep it up, stay blessed!
@@hamiltonfungula63 lol youtube for a cram session? when all else fails remember ABACADABA ;) I am enjoying his animated videos though, nice smooth minimalistic animations instead of a constent view of some crazy tweekers face taking himself way to seriously .
That's very expensive for a 4-bay system.
@@lachiu1 , do you know any in amazon that more cheaper?
@@kanzai12 just diy
I am a manager of a data center and love to ask this question on interviews. Enterprise NAS appliances are designed to be highly available, with redundant controllers, with dual power supplies, and dual network links (often arranged in LACP teams). NAS serves file systems (in the form of shared folders) to end points (typically end user devices) on a corporate network (the LAN). Now, if you want to use NAS for a non traditional workload (such as an NFS export for VMWare data stores), you'd typically devote switches to that use case to avoid the contention with typical end user LAN traffic (when using the same switches as your LAN) described in the video. The reason SAN is marketed as a faster technology has less to do with bandwidth of the different networks (there are 25, 40 and 100 Gb/s ethernet links as well) and more to do with the fundamental differences between NAS and SAN . SANs share raw disk "blocks" (from a storage "target") to endpoints (typically other servers, or storage initiators) commonly in the form of logical disks (LUNs). Block transactions are faster than filesystem transactions because they operate at a lower level and are overall more simple, so block transactions require less overhead. Filesystem transactions occur "on top of" block transactions. Meaning a simple file copy must be process at the file system level as well as at the block level. The filesystem (which is what the NAS serves) in a SAN environment is handled at each independent endpoint, so the SAN target doesn't have to do any of the file system overhead processing, such as tracking and updating filesystem metadata. The filesystem processing overhead is thereby distributed across each endpoint/server. But if you have a single storage target, you could be bottlenecked at the block level if you have several busy servers attached. If you are trying to compare a NAS to a SAN, realize you are comparing apples to oranges. If you want to make apple pie, the apples are probably a better ingredient. But if you want to make orange juice, you'll want to go with oranges. Similarly NAS is designed for some use cases, and SAN for others. Generally speaking - are you trying to share files with end users (NAS), or are you trying to share disks to servers (SAN)?
Great explanation.
the typical examples of tech use: NAS - home, offices for file sharing SAN and another distributed file systems operated on block level - Data centers. For example: virtualization like OpenStack, Hadoop clusters, Kubernetes utilize such technology to provision volumes from the available "disk" pool There no way to compare these 2 tech. as they r created for different purpose.
This is a long reply, but I read it all and it was helpful so just wanted to say thanks.
Pretty spot on, currently supporting one of those RAID Array/SAN/NAS companies. I'd add that a SAN can utilize Fibre Channel as well as 10/25/40/100 to host the access to the LUNs. In addition the LUNs can be provided in multiple channels, with multipathing, a given client/server can have a much more robust connections to the block level storage than the typical single connection to a NAS over a specific protocol. Of course if you have FC or iSCSI you really need to think proper security, there are a large number that don't setup isolated fabrics or two-way chaps. Generally, your best client performance is going to be a SAN but the costs of your workstations and isolated network switches is going to be higher than just plopping a device that serves up some NAS protocol like smb/nfs. Unless someone needs that kind of performance, such as 4k or 8k video editing, a NAS is usually sufficient.
Thank you
I love how the simple nature of these videos never fails to attract the "Well, actually" tech-geniuses, that then proceed to spew a couple paragraphs of tech-jargon in order to show how smart they are.
Not their fault that the video is wrong in multiple spots and has several misconceptions, for most people it's hard to step out of their specialization and explain something a novice would understand. For example saying that iSCSI is slower than Fibre Channel, when most implementations today of FC are between 8 and 16 Gbps with the higher tier available being 32 Gbps, while Ethernet (iSCSI) is baseline 10 or 25 Gbs with more than a few 40 Gbps and many higher end implementations of 100 Gbps.
@@Torsin2000 😆🤣😂😭😅
@@janX9 I'm glad someone saw what I did there.
@@Torsin2000 yeah, that was good :)
Dude, this is the BEST video I can find on the Internet that explains NAS SAN clearly for a beginner. So many vids are focusing on all those terminologies which is a nightmare for the audience. Yours is straightforward and comes from real-world..
Exactly! Even Professor Messer, with all due respect to him, I could not understand a single thing he was saying in his video. Now this one with animation is much more clear and understandable!
I hope not because this video is not correct.
I came back after several years to this video. I am appreciating how it condenses so well and so much good and correct information into just 4 minutes. Thank you, PowerCert Animations 👍
I don't know how you manage to create videos about the exact things I need to know about. I am extremely thankful for the time you take to make your videos, the animations are fabulous and I can see a lot of time behind. Thank you very much, keep being awesome.
You have the greatest videos: simple, yet not primitive, informative, yet not overwhelming.
I love how direct and to the point this channel's explanations are. Another great video. Thanks!
Dude I can’t tell you enough how much I love these animated videos. You helped me learn binary math
I just started working for Pure Storage and I am 100% sure that the trainer used this video to write her training material, literally word by word
Lol😂
Dude. This channel is a very good find for me. It explains many tech-related topics and the animation style is amazing.
Very nice, clear explanation. Good pace and clear voice. Nicely done and much appreciated!
Exactly how I wanted to know. Simply great explanation in just 4 minutes !
Thanks for your concise, tidy video at the same time with informations enough to grasp the essence of the difference between the systems.
Explained very well, simple to understand. Thank you.
I hated Network topics but your videos made me love it
For visual learners, this channel is a godsend!
Can't explain simpler than this. Great video for anyone who wants to understand the basics.
Excellent. Very well illustrated with clear, simple explanations. Thank you.
An awesome presentation that explains the important differences perfectly... Thank you!!
Thank you so much for your videos. They’ve helped me pass the A+ 901 Test. Keep up the good work.
Great Job has done every time on these videos. Keep it up the good work!
Very well illustrated with clear, simple explanations. Thank u
Finally I understand the difference between NAS and SAN. Thanks a lot.
Very nice explanation with animation
i learn much more from videos than from a book. And this channel has some high quality videos
And faster.
I like your videos. Thank you for providing them!
Very good nice and clear explanation, love the animation as well :)
Out of plenty of IT traning videos I have seen or watched, your training videos, Sir, are right on point and your teaching style and animations, pictures, and explanations are comprehensive enough for a six year old to assimilate and understand! Please do not stop making these videos, keep 'em coming! Thank you Sir! ~Respectfully - Anthony
Much appreciated
You guys really are the best of all the cert training videos I wish you did more! Always clear and simple explanations, well done.
Thank you.
Fantastic video! I learned so much so quickly. Thank you!
You guys are fast becoming my favourite channel - thanks a million!
Extremely well explained! Thank you!
Concise explanation and great animation!! Love it!!
Thank you, helped a lot. Diagrams make it really easy to understand.
fast , especific , organized , astonishing job !
Simple, great explanation of this difference. Thanks! 👍
thanks for the video, you did a great job explaining it in a very simple way :-)
clearly explanations. Nice video for sharing on SAN & NAS
What a wonderful and layman explanation you indeed get a concept of SAN from this video 👍👍
Hey man, you are the best, congratulation. I will enjoy so much if you make more video. Thanks
Your video saving my tons of time. Thank you so much
Your all videos are awesome Thank you so much for uploading such a great content on KZhead God bless you
Extremely exact and to the point information! Thank you so much...
i was just wondering about this. you're the bomb man
Simple Clear, thank you so much for shairing the video.
Love the Videos, you make more sense than my tutor haha.. But seriously, these are helping so much with my understanding. Now to find good references for my assignments :)
Very useful video, thank you so much!!
Bull's eye! Right on the money 💰. Very crisp and clear in explanation.
Good animation & information
Great video. You made me understand the difference in just 4 minutes! Thanks
Thank you... That was very informative.
I'm sorry to say that, but this is absolute misconception of these two technologies. In enterprise solutions NAS can be and usually is implemented in a fault tolerance manner. Solutions like EMC Isilon or Netapp C-dot clusters with redundant network connections for instance are as much reliable as SAN devices. The main difference is about file system and data transfer protocol. In NAS file system is already on the device, it's optimized for data sharing across large amount of clients/servers. while on SAN devices only RAW blocks of storage space are presented to the HOSTs. Cause of that SAN is considered very often as faster solutions with lower latency. which finally brings us to protocols of transporting the data. In NAS it's IP which have significant amount of metadata overhead comparing to FCP used in SAN (also different different acknowledgment algorithms). Protocols like FCoE or FCIP or ISCSI are intentionally skipped cause we are talking rather about traditional implementation of SAN which is FCP. Well there are also a lot of other differences like main purpose of use, replication methods and distances, backup techniques and granularity of restore, antivirus implementation and so on. but this is not the topic for you-tube comment ;) Take care and stay "Storage" focus.
ur mom is a misconception
Simple and to the point. Thanks!
That's exactly what I need to watch. Thanks for sharing!
Once again a wonderful video! Thanks a lot!
Absolutely amazing. Thank you.
Your videos are more easier to understand than anyone else on the web. I really wish you would do a A+ or Network+ course.
Many are not very accurate.
This is great information! Thank you for this!
SAN is fun to play with. Bought some old IBM equipment, pcie SAS controller cards and cables from ebay. Used two debian servers with 40Gbps infiniband. 60 hours spent. worth it :D
Perfectly explained. Exactly how I wanted to know bout SAN vs NAS. Can you do a video on VSAN?
Great video man. Thank you for your information.
I have one word for you: Synology. I’ve got three, which do so much more than simple storage. I have two in a HA configuration with bonded network links, and a third which runs DHCP, LACP and Home Assistant on Docker. It’s practically an entire server back end.
Absolutely the best IT materials in the whole universe. There is nothing better than you guys!
Thanks for interesting information.
Love your channels bro , keep it up
Appreciate it!
To the point explanation. Thank you very much.
Very helpful for my knowledge and assignment😀👏
i love your videos...please keep posting
Good vid with great presentation. It helps me a lot, thanks.
awesome explanation !!!
Thanks for pretty detailed tutorial
Really love your video teaching and animation man... Please make a video of VSAN aswell
thanks so much man,,, love your videos
Fantastic video!
Keep up the great work bro..... 👍👍👍👍
Please never stop what you're doing. Your videos are so simple to understand that it really helps a lot of people. Keep up the great work!!!
Thanks.
I'm in the middle of studying for my MCSA for Windows 10 and Server 2012 R2, so this really does help!!!
Thanks for this presentation!
very nice explanation sanks
Excellent networking YT channel!!! Immediate sub.
I really appreciate the effort you put in to make these presentations. But I have a small question.. What is the difference between NAS and VOD (Video On Demand) or are they the same??
Good explain! Thank You, Guy!
welocme
Thanks to you I finally understands the difference
Great video!
very good accent, i'm french and i understand everything , thanks a lot !!!! i do understand very well now ! and these explications are very nice !
On est ensemble
This help a lot.Thanks!
So many inaccuracies in this article and there are NAS systems that are offer very high levels of redundancy. Remember a NAS can offer either block or file access depending on the applied protocol such as iSCSI, CIFS, or NFS. The best differentiators are that a SAN offers access to storage arrays using purpose specific protocols such as fiber channel while NAS systems utilize TCP/IP networks to either serve files or encapsulate drive commands. The true differentiator is the use if TCP/IP over purpose specific protocols. You can certainly discuss the performance and efficiency aspects about the solutions offered, but this explanation isn't defining them properly to start.
I'd say that at the end the main difference is where is the filesystem managed. If in the server, NAS: you access files If in the client, SAN: you access blocks Nowadays both SAN and NAS systems (on their core) provide NAS and SAN capabilities.
@ bro can you just give me a simple explanation with an example of what san is because I'm doing an assessment on it and I'm confused
@@hassii6803 I'd say that SAN/NAS are no longer differentiated by the way they're attached to the network nor their redundancy, fault tolerance or whatsoever. There are storage networks with both modes mixed. Natural SAN systems can act, and define themselves, as NAS as well, and vice-versa. What I observe is that, by convention, when a storage keeps the filesystem and serves files (NFS, CIFS,...) is called a NAS. When it serves blocks so that the client builds and manages its own filesystem on top, is called a SAN. Of course, for serving SAN mode, fault tolerance and robustness in the network is more critical, but nothing that any enterprise grade NAS cannot provide.
Too good explained Sir ✌
Excellent Information Video.
Enjoyed this video, simple and easily understood. Could you do one on Hyperconvergence? :)
Thank you so much! Great vídeo!
Absolutely the best explanations on IT concepts on KZhead. Thank you for your dedicated work to provide easy to understand concepts on complex issues.
Thanks as always 😊
Very good explanation
Good job! Thank you.
Thanks for video i undersood finally
very simple and clean explication .. thanks a lot / and you got + like + subscriber
Good video. :) HBA network cards with fibre channel cables are used in SAN. Tape Library devices are designed to use SAN but they are really expensive. SAN can be a network solution for backup purposes or application storing data (Databases of Exchange or SQL).
Great video, thanks
Super helpful, thanks