Fun Friday: What type of RAID do you use?


Userlevel 7
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Happy Friday everyone,

 

Interested to see people’s opinions on this subject. RAID for backup storage, most (I really hope all) organisations will use RAID for the storage underlying their backups. But, what type of RAID do you typically use, and why?

 

Vote in the poll and then share any particulars below. For example, if you use RAID 60, but choose to have 4x stripes vs 2.

 

I want to add, there are no right or wrong answers (even you RAID 0/ No RAID brave people!), but there’s always a reason behind the decision, were you after maximum density, improved write vs read, maximum durability, reduced durability due to multiple copies etc.

RAID Type


22 comments

Userlevel 7
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RAID 60 for the win :) Very large disks can have very long rebuild times so we risk another disk failing during rebuild - to mitigate this we pick RAID 6. RAID 6 comes with a huge performance penalty so to mitigate this we use RAID 0. In combination, we end up with RAID 60.

Userlevel 7
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RAID 60 for the win :) Very large disks can have very long rebuild times so we risk another disk failing during rebuild - to mitigate this we pick RAID 6. RAID 6 comes with a huge performance penalty so to mitigate this we use RAID 0. In combination, we end up with RAID 60.

I like this, and it does work well with scales that justify the density, follow up question for your opinion, would you sacrifice some capacity to specify hot-spare disks as well? This always splits opinions when I ask the question to a customer 😂

Userlevel 7
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I also go with RAID6/RAID60; especially for backup storage those offer the best price/capacity ratio, while still being more resilient to disk errors. RAID6 vs RAID60 depends on the disk size and disk count (not discount^^).

@MicoolPaul I rarely see hot-spare disks anymore. With a decent support contract, the replacement disk will be delivered very quick and together with dual-parity, a failed disk isn’t so critical anymore. I rather use the disk bay for capacity 😅

Userlevel 7
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Our storage arrays we use are typically set up with RAID6 for our disk pools.  We mainly use Hitachi and Lenovo at the office.  At home I have Synology DS920+ and that is RAID5.

Userlevel 7
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We use RAID6 in most cases.

On some smaller disk repos based on internal server disks RAID5, because there are not that much disks.

Userlevel 6
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We don't manage big Luns or Datastores, and for us protection / performance works great with Raid 5, with a Hot Spare Disk when possible / critical Storage.

Userlevel 7
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RAID10 for us as we don’t utilise a lot of storage and it gives us just the right performance for our workloads.

Userlevel 7
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@HunterLF and @dips , you say that you don’t have a lot of storage. Do you put all or most of your backup data in the cloud?

Just being curious… 😎

Userlevel 6
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@HunterLFand @dips , you say that you don’t have a lot of storage. Do you put all or most of your backup data in the cloud?

Just being curious… 😎

Not Really buddy, we handle 4 TB more or less, so in terms of Storage, We use for backups something around 8TB to 10TB.

Im doing a POC with Wasabi, amazing…. it's all I can say, 
and now struggling with financial to get the budget approval to keep it!

Also working in a deduplicated repository to store the Archiving backups, the GFS with un to 5 years retention in a 5TB Virtual Appliance, with the feature of 20:1 dedup ratio (dream… would be awesome to reach 10:1).

Userlevel 6
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Ask and be curious any time you want! also you can always reach me to PM, 

feel free to contact me, any of you, 

would be great also

Friday or Saturday night virtual Beer!!

@Madi.Cristil please!! 🙏

Im going right now to my favorite Pub to have one!

cheers!

Great weekend!

Userlevel 7
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Poll results looking promising so far! No one is storing their backups on RAID 0 😆

Userlevel 7
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Well with 3-2-1 it shouldn't be a problem to store backups on RAID0...perhaps we're doing it all wrong?🤔

And, no one said it, but RAID isn't backup. 🤓

Userlevel 7
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Well with 3-2-1 it shouldn't be a problem to store backups on RAID0...perhaps we're doing it all wrong?🤔

And, no one said it, but RAID isn't backup. 🤓

THERE WE GO! Wanted someone to say that 😆

Userlevel 7
Badge +6

Well with 3-2-1 it shouldn't be a problem to store backups on RAID0...perhaps we're doing it all wrong?🤔

And, no one said it, but RAID isn't backup. 🤓

THERE WE GO! Wanted someone to say that 😆

No, but a good base for your backup data 😎

Userlevel 5

Ask and be curious any time you want! also you can always reach me to PM, 

feel free to contact me, any of you, 

would be great also

Friday or Saturday night virtual Beer!!

@Madi.Cristil please!! 🙏

Im going right now to my favorite Pub to have one!

cheers!

Great weekend!

Hey @HunterLF ! You could probably organize something like that, I bet people would join a Friday night virtual beer '’event"! Count me in :D

Userlevel 7
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RAID6 is used in most cases. 😁

Userlevel 7
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Raid 60 ftw like @haslund , 128kb strip size and 90% write 10% read for raid controller cache

Userlevel 7
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@HunterLFand @dips , you say that you don’t have a lot of storage. Do you put all or most of your backup data in the cloud?

Just being curious… 😎

We tend to keep as many restore points as we can on premise and the rest is offloaded into the cloud

Userlevel 7
Badge +6

@HunterLFand @dips , you say that you don’t have a lot of storage. Do you put all or most of your backup data in the cloud?

Just being curious… 😎

We tend to keep as many restore points as we can on premise and the rest is offloaded into the cloud

OK, thank you. I was just curious, because you said that you don’t manage much storage.

For my customers the storage gets more and more...

Userlevel 7
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@HunterLFand @dips , you say that you don’t have a lot of storage. Do you put all or most of your backup data in the cloud?

Just being curious… 😎

We tend to keep as many restore points as we can on premise and the rest is offloaded into the cloud

OK, thank you. I was just curious, because you said that you don’t manage much storage.

For my customers the storage gets more and more...

I think we are planning on adding more onsite capacity to keep more restore points and to speed up recovery times. 

As the years go by we accumulate more and more data. 😲

Hi,

It all depends on backup data type, usually we use RAID 6 which provide more resiliency but if you go for other RAID options like 6+0 etc then you have to sacrifice your storage capacity so it’s all about how much storage capacity you have and what kind of backup you want to do.

Userlevel 7
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Another important metric for choosing what type of RAID configuration to go with is rebuild times if a drive were to fail. With drives getting larger and larger, it can easily take more than a few days after a disk replacement to rebuild the array, which in turn puts pressure on the other drives. 

As mentioned above in the thread, RAID is not backup so have at least one backup copy offsite as a minimum, on a different storage medium. 

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