Hi,

It seems like you are referring to different types of Solid State Drives (SSDs) with designations "MU" and "RI." Without specific information about these designations, it's challenging to provide a precise answer. Generally, different SSD designations can indicate specific characteristics or intended use cases, such as endurance levels or performance.

Here are some considerations:

1. Endurance Levels (DWPD/TBW): RI (Read Intensive) SSDs typically have lower endurance than MU (Mixed Use) SSDs. If your MU SSDs are used in a scenario with a lot of write-intensive workloads, replacing them with RI SSDs might result in shorter lifespan due to the lower endurance.

2. Performance: MU SSDs are generally designed for mixed workloads, including both read and write operations. RI SSDs may prioritize read operations over write operations. Make sure the RI SSDs meet the performance requirements of your specific use case.

3. Compatibility: Before replacing any components in a server, it's crucial to check compatibility with the hardware and RAID controller in your R740XD server. Ensure that the RI SSDs are compatible with the RAID controller and the existing array configuration.

4. Vendor-Specific Information: SSD models and their compatibility can vary between different manufacturers. Check with the SSD manufacturer or your server vendor for specific information about the compatibility and recommended use cases for the SSD models in question.

5. Backup Data: Before making any changes to the storage configuration, it's essential to back up your data. This is a standard precaution to prevent data loss in case anything goes wrong during the replacement process.

In summary, while it's theoretically possible to replace MU SSDs with RI SSDs in an existing array, it's crucial to consider factors such as endurance, performance, compatibility, and any vendor-specific recommendations. Consult the documentation provided by the SSD manufacturer and your server vendor for accurate and specific information based on the models you have.

Thank you for your contribution, I have had difficulty finding the answer I am looking for.
What I have now is this model:
Dell RD78N 960GB SSD vSAS SED Mixed Use 512e 2.5in and I want to replace it with the following:
JDK40 Dell 960GB SAS 12GBPS Read Intensive 2.5" SSD

Reading what you write to me, it seems possible to replace but we could have problems with performance, right?

Hello Oscar-ibm,

Using the same drive would be preferable but I don't think it would have a performance hit that you would notice.

Some call out from Martins information:

MU SSDs are generally designed for mixed workloads, including both read and write operations.

RI (Read Intensive) SSDs typically have lower endurance than MU (Mixed Use) SSDs

If you are doing a lot of write then you may take that into consideration and try to get MU.

You might contact Sales and see if this one is available:

Pn#345-BHSH

960GB SSD vSAS SED MU 12Gbps 512e 2.5in with 3.5in HYB CARR Customer Kit