The system and copying files are very slow.

RH5885 V3 SSD disks are configured with RAID 10 and 5. After running for 3 to 5 days, the system and copying files will become extremely slow and unusable.

LSISAS2208 controller

SSD model: intel SSD DC S3500

There is an RH5885 v3. After installing WINDOWS2008 R2 X64, the system will become very slow after running for 3~5 days. The resource monitoring shows that the available memory is very small, 0~ 12 of MB. Only one application SQL 2008 R2 is running, and files are uploaded from the network. The machine is also extremely slow, there is no problem with the network, and the files are all queued for writing to the disk.

Huawei's random boot disk cannot recognize more than 2T. Two sets of RAID are built. The first 4 SSDs form raid 10, which is equipped with WIN and SQL, and all the rear disks are RAID 5 to store files.

Suspect 1, the RAID parameters are not configured properly, the following stickers are for guidance.

Suspicion 2, V3 itself is not compatible with WIN2008,

Suspect 3, other reasons, such as the controller, memory, SSD, etc. certain hardware.

The RH5885 V3 SSD disk is configured with RAID 10 and 5, and the system and copying files are very slow. What can I do to solve the issue?