Choosing the Right NAS RAID Guide

Large RAID storage for archive data storage solutions RAID is not a new thing. Originally created as means of combining multiple smaller hard drives and combining them into 1 large storage volume (so your PC would only see one hard drive like your C:/ drive, instead of several smaller hard drives connected). RAID stands for either Redundant Array of Inexpensive Disks, or Redundant Array of Independent Disks. Now the reason for the two different versions of the letters in RAID is largely due to how storage has changed. As Hard drives have grown progressively larger in capacity, the need for creating massive volumes has been outweighed by the more current trend of data storage arrays needing Redundancy.

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[Der_Marc]

Watched now a couple of your videos about NAS, ISCSI, RAID. alsongside with the same content from other channels. Your explanations are simply the best and easiest to understand. Thanks again for sharing your knowledge.

[K_Tech]

A lot of mistakes here.
1. ZFS is not RAID, it's a filesystem. It can be used on any RAID or even on a single drive (Assuming OS supports it).
2. RAID 1 won't give you double WRITE speed. Actually, write performance can be even slower than a single drive.
3. It is incorrect to say that RAID 10 is less safe than RAID 6. For example, in 10-drive RAID 10 configuration, you can lose up to 5 drives and don't lose any data. In RAID 6 if you lose 3 drives it's over. Even more, you have bigger chance to lose another drive during the RAID rebuild in RAID 6 due to a much longer rebuild time, especially in high-load systems.
4. It is incorrect to say that you can only use the same brand drives for the traditional RAID. You can use different brands easily.

[kaihack]

Love the thorough explanation, even answered my follow up question at the end w/SHR & BeyondRAID

[CastleBomb]

Please note with SHR - You came make the SHR larger.. BUT please last be mindful that YOU CANNOT MAKE IT SMALLER WITH OUT DESTROYING IT. I wish I had known that before I started using SHR.

[jacqueshollands]

Excellent explanation. Thank you for making it simple to understand

[joepacheco]

I pay for an online back up for my NAS that happens daily, but I'm using RAID 5. Should I just convert to RAID 0 since I have that safety net?

[gqsm]

Look up why we don't use RAID5 and even RAID6 anymore. They do not stack up well with xTB capacity drives.
They hark back from the days when drive capacities in the GBs were the norm. I haven't used RAID6 for going on 12 years, let alone RAID5. The technical papers are out there, look them up for the reasoning.

[Review]

Brother thanks to GOD and I got it clear

[kordichb]

I always run RAID 50. Could you touch on 50/60 options. I know that lower end units don't offer this.

[Mryetube]

Hi, Netgear ReadyNAS X-RAID and X-RAID 2 is been around forever not just Synology's SHR/Drobos BEyondRAID has fluid RAID. Netgear's ReadyNAS X-RAID is similar to RAID 5 and X-RAID 2 is similar to RAID 6 both are fluid RAID or dynamic RAID X-RAID is an auto-expandable RAID technology that is available only on ReadyNAS systems. The easiest RAID to have with different type and sizes of HDDs.

[truthwsyf]

Hi - great video. If i have a few type 1 VM...how can i create access to high speed storage using RAID

[nicholasreynolds]

RAID1 would be twice the read speed, but not twice the write speed, no?

[PitboyHarmony]

If you lets say start with 4x4Tb drives in a 4 bay running raid 5,
and you decide over time you need more space,
can you slowly replace the 4Tb with a 10Tb ... one at a time,
live with the short term loss of the 6Tb per disk,
and in the end once all 4x10Tb drives are installed,
will it finally adapt to seeing 40Tb of space?
Or will it only ever see 16Tb?
Do you have to buy a new NAS and 4x10Tb drives and migrate the data over at one time?
How do you upgrade to larger drives, in raid 5, over time?

[donfreeman]

With Truenas scale in raid 1, can it be upgraded to raid 5 without losing data?

[wildwillybilly]

About a 1GB network (Does that mean the ethernet connections between router, nas, and clients?) That the speed of Nas drive function wont matter as much with higher speed drives if the ethernet is maxed out at 1GB (Router?)? I heard a 6e cat might be over kill if the client(computer or Nas doesnt process 1GB speeds) Not sure if that is true . . .And does that mean a better router would avoid a bottleneck??

[camperotactico]

I have a few questions regarding RAID5: Is it upgradable? Imagine I have 3 2TB disks and in a few years I want to add another one, would it be possible? Also, what should I do if I want to replace my disks for bigger ones down the line? How could I transfer all data?

[Torulv]

so in raid5 the parity on one disc can recover different data stored on 3 separate discs if the raid has 4 discs??

[raysrcsandtech]

New to NAS have you done a video on showing the SHR in action, in that you show us what happens if you upgrade to a bigger drive, do you just pull it out with the system powered on then slap in the new bigger one? how to add the bigger one in. How does that all work. Im looking at the 4 or 5 bay Synology and I think from the start I should use SHR as I plan on upgrading to bigger drives as funds allow.

[vikk]

I bought new NAS920+ and 4 sata driver. Plz suggest me which one is batter RAID1 OR RAID5 RAID10?

[ІнженернаДумка]

If using 4Kn disks in RAID, what kind of cache do you need in Synology? Didn't find information about this anywhere.