Pass or Fail? Does RAID actually work?
Вставка
- Опубліковано 1 чер 2024
- Does a Synology NAS actually work? Should you be using RAID? Do you understand the different types of RAID? Which is best? RAID 0 vs RAID 1 vs RAID 5 vs SHR? Or can you just use an external hard drive?
Disclosure: Big thank you to Synology for sending me some NAS devices and hard drives. I purchased some of the Synology devices (and disks) in this video, but they also sent me a few. Also note that Synology didn't see this video or approve it before it went live. Synology also didn't pay me to create this video.
// MENU //
00:00 - Intro
00:43 - Does RAID actually work? // Which one is better?
02:57 - RAID 5 demo
04:12 - Reparing a drive
05:47 - RAID 1 demo
10:06 - RAID 0 demo
12:28 - Choose your RAID wisely
14:05 - Conclusion
// Synology Calculators and Tools //
Synology RAID Calculator: www.synology.com/en-uk/suppor...
Synology RAID explained: kb.synology.com/en-id/DSM/hel...
Compatibility list: www.synology.com/en-uk/compat...
// David's SOCIAL //
Discord: / discord
Twitter: / davidbombal
Instagram: / davidbombal
LinkedIn: / davidbombal
Facebook: / davidbombal.co
TikTok: / davidbombal
UA-cam Main Channel: / davidbombal
UA-cam Tech Channel: / @davidbombaltech
UA-cam Clips Channel: / @davidbombalofficialclips
UA-cam Shorts Channel: / @davidbombalshorts
Apple Podcast: davidbombal.wiki/applepodcast
Spotify Podcast: open.spotify.com/show/3f6k6gE...
// MY STUFF //
www.amazon.com/shop/davidbombal
// SPONSORS //
Interested in sponsoring my videos? Reach out to my team here: sponsors@davidbombal.com
nas
synology
synology nas
synology ds220+
synology nas ds220+
synology drive
#nas #synology #raid
Does a Synology NAS actually work? Should you be using RAID? Do you understand the different types of RAID? Which is best? RAID 0 vs RAID 1 vs RAID 5 vs SHR? Or can you just use an external hard drive?
Disclosure: Big thank you to Synology for sending me some NAS devices and hard drives. I purchased some of the Synology devices (and disks) in this video, but they also sent me a few. Also note that Synology didn't see this video or approve it before it went live. Synology also didn't pay me to create this video.
// MENU //
00:00 - Intro
00:43 - Does RAID actually work? // Which one is better?
02:57 - RAID 5 demo
04:12 - Reparing a drive
05:47 - RAID 1 demo
10:06 - RAID 0 demo
12:28 - Choose your RAID wisely
14:05 - Conclusion
// Synology Calculators and Tools //
Synology RAID Calculator: www.synology.com/en-uk/support/RAID_calculator
Synology RAID explained: kb.synology.com/en-id/DSM/help/DSM/StorageManager/storage_pool_what_is_raid?version=6
Compatibility list: www.synology.com/en-uk/compatibility?search_by=products&model=DS220%2B&category=hdds_no_ssd_trim&p=1&change_log_p=1
// David's SOCIAL //
Discord: discord.com/invite/usKSyzb
Twitter: twitter.com/davidbombal
Instagram: instagram.com/davidbombal
LinkedIn: www.linkedin.com/in/davidbombal
Facebook: facebook.com/davidbombal.co
TikTok: tiktok.com/@davidbombal
UA-cam Main Channel: ua-cam.com/users/davidbombal
UA-cam Tech Channel: ua-cam.com/channels/ZTIRrENWr_rjVoA7BcUE_A.html
UA-cam Clips Channel: ua-cam.com/channels/bY5wGxQgIiAeMdNkW5wM6Q.html
UA-cam Shorts Channel: ua-cam.com/channels/EyCubIF0e8MYi1jkgVepKg.html
Apple Podcast: davidbombal.wiki/applepodcast
Spotify Podcast: open.spotify.com/show/3f6k6gERfuriI96efWWLQQ
// MY STUFF //
www.amazon.com/shop/davidbombal
// SPONSORS //
Interested in sponsoring my videos? Reach out to my team here: sponsors@davidbombal.com
which nas device would you recommend to buy david please share some links?
I basically want to build my own server, Something, with as many decent, reliable hard drives. My goal is to allow others to use the space for whatever they want. Basically contribute to IPFS, while making at minimum enough to cover, would I put into it “ time, hardware, cost of maintenance, et cetera“ I’ll start off small. Initially, having it be a combination of a side project. At the same time, allowing me to learn something new.
Sounds like you are going to run your own cloud :)
I justify mine by utilising much of it as possible, but dont expect to be making a profit as large companies already offering IPSFS/cloud storage very cheaply.
The biggest benefit for personal NAS is its access speed, data privacy and locally shared storage. I use mine a lot for website development.
I've used Buffalo Terastations for over 20 years, always in RAID 5. Had many single drive failures and they've always rebuilt perfectly after replacing the failed drive. Considering switching to Synology now (5 x 16 or 18TB to give 48 or 62GB of available storage with a cold spare). Thanks for the video.
I run two data center racks, and we use RAID 6 on our critical devices. Raid 5 has a known flaw, and should be avoided. Raid 6 requires 4 drives per cluster, and can tolerate 2 of the 4 drives failing. We then back up each RAID cluster at night to data center across the USA, and thus we have 8 copies, and with such massive redundancy, we have never lost any customer information. Hard drives are relatively inexpensive, and if you keep them at a steady temperature as they are inside a data center, they will last a decade.
Just passing by to say I've subscribed after liking multiple shorts in the reels, great content and I love this stuff, great channel mate all the best.
Great video as usual 👏Reminder for newcomers that while RAID provides some security, it is not a backup if that's the only place where you have your data. You could have a catastrophic failure crashing the whole machine at once since everything is connected to a single device. RAID provides high availability. For backup, have at least a copy of that system offline. (Someone bellow is suggesting rsync of the old drive, that's a good idea.)
Very helpful, especially if raid 5 only provides redundancy if one drive fails... not multiple failure of drives.
Hey really like your content. Watching from Kenya 🇰🇪
Awesome! Thank you!
@@davidbombal I have some programming school am working on and would really like to be using wour already made videos in making young computer enthusiast Youths learn more... Any advice?
The gang & I watching you from the Arctic Circle, here in Siberia, Russia! Have some horrible renovations carried out recently in the Common area. We now have high speed dial up! With this technological marvel the guys & I can now watch David sharing his knowledge on the Interwebs, about great technologies hopefully he will talk about the magnificent Commodore 64! Till then, much love, from the motherland!
Perfect timing on this video. I’ve been contemplating building my own TrueNAS system but Synology makes it so easy I think that’s the route I’ll go.
Glad to hear that you found the video useful Chris!
You won’t regret it. I now have three as well. Very feature rich and fantastic interface. Plus you don’t have to build a PC.
There is a happy middle ground between RAID 0 & RAID 1. RAID 10. The 0 gives you stripping of writes, this improving write performance. Then 1 gives you mirroring of the RAID 0 disk. RAID 5 is better, but RAID 5 is typically not available in the lower end setups.
And not to mention r5/6 need to do alot more computation to rebuild the lost bits. In case of r1 it's a simple copy. It's immensely faster and safer. If you have a r5 and another drive were to sign off, you are screwed. Since many drives might be bought at the same time the chance is not too slim for another drive to fail at a similar date. With r1 the problem won't take long to be sorted and won't wear out the other drives nearly as much, hence lowering the chance of failure. And it's even faster...
By definition, RAID is not a backup. So in some cases, it is better to use sync to make copies of data, even across multiple NAS-es. A disk can fail, and a device can fail too. My qnap NAS fail and I just put disks in a new one in order and I manage to recover all data and RAID arrays also. Losing arrays is very bad if you don't have a copy.
Awesome video to understand the raid concept deeply❤.
Love from India ❤
Thank you Aman!
@@davidbombal thanku sir 🙏
I use shr2, if a synology fails put the hard drives in the same order into a new nas and it will still be together as a raid volume. You should talk about their "active backup for business" and how its basically a networked version of acronis that makes image level revocery from a bootable thumb drive. We have used it and gotten rid of all of our imaging software now. Its free btw. It also compresses and consolidates all the windows files/same files.
I used to do a lot of storage testing, from DAS to SAN. The overhead of calculating parity in RAID 5 and RAID 6 (double parity) can have a negative effect on write speed for busy database applications. Battery-backed writeback cache is your friend. Overall, RAID 1+0, striped mirrors, performed best. Implementations that avoided a pitfall of RAID 0+1, mirrored stripes, were also good.
Inspirational ❤️
Thank you very much!
Great video. When i worked at Computa Centre back in the days we used RAID 1 on the IBM xSeries 330, 335 servers. On eSeries server 240 and 250 we would use RAID 5. One of the xSeries 250 server we had an expansion bay of RAID 10. Good failover i have to say but if the whole bay goes then your in trouble and that happend once.
I use QNAP NAS units and they're fine for what they are.
Their general lackluster performance and also lack of expansion options for their more affordable NAS units is a part of the reason why I ended up consolidating all of my NAS systems down to a single 36-bay, 4U server.
Cool video! We want more videos with synology nas 😎
Very informative. I wished that some of my computer science students, most of which use Windows, would be more aware of where and how their data is saved.
As always, the right tool for the right requirements
I started using RAID 5 in the mid 90s with midrange systems and later when I worked contract at IBM. My Synology NAS I set up with raid 5 also, knowing the cost of losing the storage capacity of one drive and other implications. I don’t recall all of the performance specs, but I think write speed is slower and performance is even slower when writing many small files due to the calculations that must be performed for each write. You could have mentioned RAID 6, which allows for losing two drives in an array with the cost of losing usable storage capacity of two drives. Nice video!
Use SHR and you'll gain in speed and data space availability.😉
I think the best option is ZFS, RAID even with BTRFS is no longer a reliable option.
Software and Hardware is separate so there is no checksum used to correct any issues.
I lost all my storage array before because of RAID+Synology+BTRFS+RAID6. 😢
Hey David, great video I wanted to know can you make a video on the new upcoming Cisco Certified Support Technician (CCST) Cybersecurity and the Cisco Certified Support Technician (CCST) Networking certification for someone starting out in cyber security? Are they helpful as in getting a job in cyber security?
I use unRAID because I started out with a mix of drive sizes and extra hardware to use. One advantage of unRAID is that if you lose a single drive, no problem, you can have one or two drive parity. However, if things got bad, you can take the data drives out and access the files, it's all XFS. You might lose files from the missing drives but the rest is at least readable.
good thing they beep when somethings wrong, actually didnt knew that
i got my ds214+ 2.5 years ago and still have its seagate disks in it
Fantastic. Now I have decided my NAS
Many thanks for your all amazing Videos... I have NAS Storage, RAID 5 configured with 1 volume, Right now data is 43% only but issue is after 10 or 15 days storage will be reaching to 100%, then it will be auto refresh to 43%, My concern is... Between the process getting WARNING ERROR. Please suggest me how fix it. Don't want to reach 100% Unnecessary
Very interesting video, but nowadays I use an LSI Raid card for my Raid 5 disks. Unfortunately, the non-Synology hardware usually doesn't allow to create shr raid volumes.
The Synology hardware, in my case, has so many limitations as far as I can't install a Linux OS on it and you need to use their system. Also, for big appliances, the Synology hardware is very expensive compared with the equivalent hardware bought by yourself.
In any case, these are good solutions for the people who is not very techie and needs to store important data in a safe and a private place.
Your videos are very informative and entertaining 👏
Happy to hear that!
I've had both of my Synology DS1821 8 drive nas fail on me. One had a power supply fail and both had the main board fail in a server room with temperature control and filtered power. I switched my nas's to ubuntu servers running ZFS and Samba. You lose the fancy admin gui, but gain reliability in my opinion. Surprisingly I have a bunch of the smaller 4 drive Synology units in some smaller companies I consult for and they run fine. A single unit failing does happen, but two of the larger units multiple times? I need to trust the equipment I use.
The problem with hardware raid is if the controller fails and the replacement controller is not compatible with the raid data arrangement on the drives consequentially cannot read the data. RAID is not a substitution for back-ups.
David what a great video thanks so much I have a 4 disk RAID box at my house mine is made by QNAP and it works great
I YOLO with individual drives but SHR looks really slick. Being able to add multiple drive sizes to the array (and use the space) is good for the budget. My reason for not using RAID.
Just think of SHR as Raid+. Or, raid with beneficial updates. It's a newer flavor of redundancy.
My issue is that HHDs are expensive my NAS has 2 bays with mirror (raid1) I need more storage. I am thinking to backup stright to AWS S3 to save cost and set step function for cold storage
hey mr.bombal i need help with the nas well im trying to use two nas on my network and have them communicate with eachother how could i do that
HI David, Hope you are in good health. I wanna know if Kali Linux can be installed on Iphones ? Plz Reply.
I switched to Synology NAS about 10 years. Love them.
Sir. Can i use my TP-LINK TL-WN722N (ver 1.10) on Kali Linux? does it support monitor mode and injection?
Exellent as always!
What I don't get is how a single 14 TB drive is going to be the backup of two equal or higher capacity drives?
the quality of content is just like
angel in a heaven..............
i guess david hired some camera men or editor😂😂😂😂😂😂
Thank you Mr
Could you please make some episode about configuring Nokia SR Linux or Nokia SR 7750 (BGP) Router ???
So if I accidentally remove a drive from RAID5 and put it back on after a second, it goes to rebuild data anyway for hours long?
👍
From the thumbnail I was hoping to see a security review. Mostly since other NAS drives like QNap are having constant security warnings. e.g. Are they phoning home to China, are they okay to be on your primary network or should it be in its own VLAN?
Synology servers are more secure, and has many security check features. They dont phone home to anything, but do have a phone home to Synology if you've enable it.
Latest Synology OS now has a couple of applications that cant be turned off from the main interface, dont think these phone home, but think is a very bad idea made from Synology. They can easily be disabled and removed from the command line though.
@@seb_gibbs Thanks for the information!
I onced showed a client how their RAID worked by pulling a drive like that. Before the RAID rebuilt he was showing his boss and pulled a different drive. This was back in the day of tape backup so I had to spend hours restoring. Last time I did that demo for a client. After that I just explained how it worked.
if i have a btrfs pool is it possible to get a synology nas and move the data off the btrfs onto a SHR pool?
If you can access both the btrfs and the SHR, then you can just copy one to the other.
@@seb_gibbs yeah i just wasnt sure if synology would read the btrfs format but i found it can, but i can also copy it across from one nas to the new one.
This is the video I needed, thanks! I’m looking into buying one of these Synology NAS’s. Still deciding between the DS920+ or the new DS923+. I want to use it as a backup/file/media server, so then the 920 would be better I think.
Does anyone know which HDD’s are best and most reliable for a NAS? I’m looking around 10-16TB/drive range
I like the EXOS Enterprise line of Seagate drives. Right now I have eleven 14TB and eleven 18TB EXOS drives with two 4TB in a RAID1(mirrored) cache configuration. I upgraded from 6TB drives, one drive at a time, doing a rebuild each time. Took about a month, but in that time it really tested the resiliency of the old HDDs and the new.
You could also go with the Ironwolf Pro, but the EXOS line might have a few advantages depending on the drive: EXOS drives are helium while only some of the Ironwolf Pro line have helium. Additionally the MTBF of EXOS is 2.5 million hours; MTBF of Ironwolf Pro is half that (1.2 million hours).
They both have 5 year warranties.
There are some other differences a bit more technical that you can delve further into if you are interested.
Best luck!
Check their compatibility list. Latest versions of their NAS have heavily restricted disk choices, The medium/higher end are now limited to Synology branded drives which are rather expensive, for no clear benefit other than Synology profit.
Where do you stand on the actual NAS hardware failing? I’ve heard if Synology hardware fails, you have to get the same hardware to get the HDDs working again. This could be expensive if the hardware is out of warranty. For this reason, I’ve saw a video which recommended a TrueNAS set up as there’s much more flexibility between hardware. I’m torn, as Synology seems like the ‘easier’ solution to use, but I like the idea of not being tied down to any particular hardware manufacturer.
That's right and it's true for many RAID controllers, it's not specific to Synology. RAID is a technology, not a format or standard. Every manufacturer implements it differently. Furthermore, Synology is for non-techy consumers, for the masses. You plug it into power and it works. If you have some understanding of PC hardware, it's far more cheaper, efficient and effective to build your own NAS. I would also use ZFS instead of RAID.
yep, its my biggest fear, depending on the drive format that drives may or may not work on a different nas. So do recommend checking the drive format you use will allow you to still access that data if the server fails.
I had one server fail about 9 years ago; Synology said to remove the drives and post the server to them. They sent me a replacement within days, (even though I originally purchased from ebay). Havent had a server fail since.
I run raid 0 for my Steam games storage for almost 3 years. No problem. I ran raid 6 on my 6 bay Synology NAS that's on a 10Gbit local network. No problems too! 👍
Main thing is I'm using enterprise level HDDs that is less prone to failing. I bought them all brand new too.
Still running RAID0 is akin to playing Russian roulette. The probability of failure might be low but the certainty of 100% data loss is rather high.
@@Statek63It's his Steam library, where only performance matters. His backups are the Steam servers :)
Can you recommend us an onlinr course or book from which we can learn most of the features of synology?
There's plenty of that on their website
For some reason this video reminded me of that two and a half men episode where Walden gives Jake and his friend a job and they end up messing with the hard drives 🤣
Hello, i have a server with hardware raid 1 for backup and i want to use the backup for 2 location. Will it work? Lets say i install os and and software for location A. Pull out the 2nd drive and install the os and software for location B. Will it work to choose which HDD to use? If server from location B fails i`ll use the disk with software installed for it and if server from location A fails i`ll use the one with software for A. After all up and running i`ll put the second drive to rebuild. Does anyone tried this?
how do you get dark mode on Synology DSM?
Pulling RAID0 drive was entertaining and educational as I never dared to do this sort of thing :)
Glad you enjoyed the video! :)
RAID0 basically takes, the odds of one drive failure, and multiplies it by number of disks. Use only for data you care very litte about. And of course, no forms of RAID must be thought of a a backup.
I've had way too many bad experiences with raid 5, 2 disk parity at the least or striped mirrors for me.
2:00 this is exactly what I want to test on my NAS, but I never dare to
Good one
You are the best blessed is every single inch of you
Please Dave, can you explain RAID I tend not to really understand the differences in RAID
Let the HDD spin down before yanking it all the way though!
iv never really understood raid thx
You left out using rsync built in to synology to copy to an external hard drive and disconnect the drive and I swap between two hard drives daily. Gives me an offline copy to protect against ransomeware
I also use the Synology Drive application, as it automatically keeps previous version of your files.
Very nice 👍 Boss
Which one is better?
A Backup, the more backups you can have as possible.
Its price vs risk. Two reliable backup services in different locations is probably the most you need though.
I hate Synology but also I love it, the os is awesome 👌, hardware is not for streaming for my choice, I did move to another one capable of 4k streaming, Do you know which one!... the ransomware guy, it is super powerful.!
i have my storage internal and a copy 1:1 in external hard drive with the same size
I bought a raid system with multiple drives years ago, then my computer died, and I had to replace it, and now my drive won’t even recognize or mount on my computer? I have to ask myself. Why do you all this if I’m going to lose my information. It seems you’re better off just going with one large USB drive. It may be slower, but at least you can transfer your images.
I would never want to use such large drives in raid. During a rebuild you are just asking for another failure in an older array. Even 16k drives or ssds I wouldn't want to go above 4tb on enterprise drives which are vasty more robust.
so basically SHR is like AI RAID.. when would a user prefer another RAID method? is SHR new?
I've been using Synology for years now in enterprise environments and I never experienced a fatal failure.
More, RAID0 really means "say goodbye to your data"😂
RAID 0 should really be called a BAD IDEA
Depends, for work yeah bad idea, but for gaming you just need speed and backup your games externally, so RAID-0 is the best performance.
@@Neo666233 Maybe if you use harddrives, but if you can afford two of them, you should rather spent the money on one fast SSD ;)
0 reliable, much performance
@@randomsam83 exactly, and since RAID = REDUNDANT Array of Independent Discs, this is pretty much an oxymororn as soon as you add an zero to the end ^^
All hardware raid is falling behind nfs. They are all susceptible to bitrot, corruption, etc.
Cant wait for the day hdds are finally replaced by ssds. The rebuilding time in these larger hdds is getting way long.
You are missing important stuff here. What about performance? Raid 1 rebuild is faster than SHR. Also if raid 1 drive is broken. The otger drive will work. If both of them have broken sectors you still can retrieve data. But with RAID5 you cannot.
Your video is oversimplificating a lot of aspects
ZFS all day long
You forgot RAID 6 and the best RAID 10
grat content
love may heart❤❤❤
Raid5 sucks though, you should run at least Raid6 to have two drive failure. It's easy to have several drives to fail when you buy them at the same time, they're usually from the same lot. If multiple in that lot is bad. This happened more than once.
This video is sponsored by Raid shadow legends
1st
Thank you Mike!
@@davidbombal am i first this time : )
I dare not to do that. Thanks.
First
Thank you Hamza!
BTRFS.
So, before the police RAID my hard drives. I will Pull them, then Pool them. Hmm🤔🤔
lol
Get an x86 version, install debian. Both worlds..
Synology is very bad when it comes to security updates, I recommend against them
ZFS. RAID is dead.
Why'd you change from the trashcan thumbnail?!
Alex this is the one. @sko242