About NAS has 4000M/S write speed

[vmware]

Hello, I have a client who requires NAS to have a write speed of 4000M.
They currently have 18T*24 disks, 7.68T*2 NVMe disks, 192GB of memory, and 100GB of regular network cards. Does this environment have the capability to achieve such a speed? If not, how can we adjust it?
In the laboratory environment, test the configuration and detailed instructions to achieve this speed.Thank you

[yaroslav (staff)]

Hi,

It raises so many questions.
Are disks capable of it (look at datasheet and RAID Calculator)? What is the RAID going to be there? What block are you aiming for the most? What is the actual storage demand? Shared storage connectivity protocol? Where is the StarWind HA target running (inside VM, bare-metal, Windows application, etc.)?
I assume iSCSI to be the protocol of choice. If so, performance won't be 4 Gbps (see why here https://www.starwindsoftware.com/starwi ... -initiator)
Try using a RAID calculator to shape performance expectations https://www.raid-calculator.com/
I think it will be much easier and more convenient from the user perspective to use the trial key so you can reach out to the team of techs with your questions.

P.S. Free version is not for distribution by the key holder. You can run your production on it, but you cannot distribute a free version to others.

[vmware]

Whether it is a CVM or Windows environment, bare metal installation, as long as the performance can reach 4000m/s, if you are willing to try, please provide an environment and protocol that can achieve this speed, and plan to use softraid CVM

[yaroslav (staff)]

May I wonder what is the local storage performance inside the VM?
Target performance is heavily limited to the protocol you use. I am positive you won't be able to get these numbers out of the iSCSI target.

[vmware]

18T disk has 150m-200m write speed，24 disks add to 36disks，There is no significant improvement，I don't know why
Yes, it cannot achieve the expected speed. How to optimize it? The speed that a single host can reach can also be temporarily achieved

[yaroslav (staff)]

I think the expecation is not realistic. Please rever to my questions and thoughts in the thread.
Please use https://www.raid-calculator.com/ to calculate the optimal RAID level to deliever the expected performance.
Please make sure to align RAID with https://knowledgebase.starwindsoftware. ... ssd-disks/.
Once configured, please measure the perofrmance of the underlying storage.