NVME RAID 1 is madness?

[offroader50]

The system is an industrial machine, we need to store images as fastest as posible so we choosed a nvme drive.

Now the client suggested a mirrored drive so the system don't stop if a drive fails.

Any options to build a RAID 1 of nvme drives?

I have only found a raid card for nvme and it cost 500€.

Any other solution? or should I try to disuade my client from a mirrored drive.

 

[USAFRet]

Need more details.

"an industrial machine"....for what?
What are the rest of the specs of this system?
What is the tolerance for potential downtime?
What actual backup situation are you implementing?

 

[offroader50]

Need more details.

"an industrial machine"....for what?
What are the rest of the specs of this system?
What is the tolerance for potential downtime?
What actual backup situation are you implementing?

Is a inspection system has cameras and we have a software to analyce the images. We need to store the original images without compression and the processed. We need this to be as fast as possible (that's why I choosed a nvme drive) to not add time to the assembly line.

The dataloss is not as important as the uptime, that's why I would like a RAID 1 solution, a drive failure don't stop the system until replaced by a maintenance work.

Actually I just make a copy to a external drive of the configuration data anytime it changes and an hourly copy of logs and statistics. I don't need a backup of the images.

 

[USAFRet]

Need more details.

"an industrial machine"....for what?
What are the rest of the specs of this system?
What is the tolerance for potential downtime?
What actual backup situation are you implementing?

Is a inspection system has cameras and we have a software to analyce the images. We need to store the original images without compression and the processed. We need this to be as fast as possible (that's why I choosed a nvme drive) to not add time to the assembly line.

The dataloss is not as important as the uptime, that's why I would like a RAID 1 solution, a drive failure don't stop the system until replaced by a maintenance work.

Actually I just make a copy to a external drive of the configuration data anytime it changes and an hourly copy of logs and statistics. I don't need a backup of the images.

OK, this is an instance where a RAID 1 will be a benefit.
Not sure if NVMe drives are needed over regular SATA III SSD's.

What is the size and frequency of the image capture?

 

[offroader50]

Need more details.

"an industrial machine"....for what?
What are the rest of the specs of this system?
What is the tolerance for potential downtime?
What actual backup situation are you implementing?

Is a inspection system has cameras and we have a software to analyce the images. We need to store the original images without compression and the processed. We need this to be as fast as possible (that's why I choosed a nvme drive) to not add time to the assembly line.

The dataloss is not as important as the uptime, that's why I would like a RAID 1 solution, a drive failure don't stop the system until replaced by a maintenance work.

Actually I just make a copy to a external drive of the configuration data anytime it changes and an hourly copy of logs and statistics. I don't need a backup of the images.

OK, this is an instance where a RAID 1 will be a benefit.
Not sure if NVMe drives are needed over regular SATA III SSD's.

What is the size and frequency of the image capture?

Size of the images is 120Mb the objetive time is 5 seconds of image store so It doesn't overlap with a new processing.

Any PCI-E controller that provides RAID support for NVME?

 

[USAFRet]

Size of the images is 120Mb the objetive time is 5 seconds of image store so It doesn't overlap with a new processing.

Any PCI-E controller that provides RAID support for NVME?

120 megabytes?
Writing to a SATA III SSD, that's under 1 second.

I just did a test. RAW images out of my Fuji camera are 32MB each. So 4 of them = 128MB.
Copy from one SATA III SSD and paste to another SSD....well under 1 second to complete.

An NVMe would provide minimal gain over that, if any.

A RAID controller? Maybe this one:
https://www.amazon.com/High-Point-SSD7101A-1-Dedicated-Controller/dp/B073W71K4Z
(not cheap)