RAID 0 NVME Read Performance Same as Non-RAID

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   The pure read performance issue, e.g. only at single-drive levels has been duplicated using all connection combinations of: M2_1 + M2_2, M2_1 + M2_3, M2_2 + M2_3 and lastly M2_3 + M2_4. Uniquely write performance is only on par with expectations when using M2_1 (CPU bus) + M2_2 (Chipset bus). Contrariwise write performance drops to single drive speed when testing all other connection combinations.

To prevent SSD throttling, active cooling (fan/heatsink) has been used on all connections except for M2_3 + M2_4. They are too close to support active cooling. Used ASRock's passive system board heatsink in that instanced. The included thermal resistors were used on all test scenarios to monitor real-time heat confirming all tests were performed well within design specs, e.g. to prevent throttling. Additionally, the room was maintained at constant 68 degrees Fahrenheit throughout testing.

The inability to scale read performance in all combinations using RAID 0 indicates that the controller is not effectively parallelizing read operations between the two SSDs regardless of the bus CPU/Chipset or connections: M2_1, M2_2 and so on.

All hardware/software are new, built exclusively for this rig.

The BIOS is running version 3.20
A RAID 0 array is comprised of two Gen 4 NVME SSD's setup in BIOS.
Win 11 was installed using Microsoft's public Windows 11 Installation Media while following the instructions noted in AMD RAID Driver v 9.3.3.00117 e.g. using rcbottom.inf, rcraid.inf and rccfg.inf during advanced setup to ensure the single 8TB single volume is recognize during first time setup. Windows OOBE was setup without issue.

Post OOBE the following core apps/drivers were installed (in order):
AMD Chipset Drivers Revision Number 7.02.13.148
AMD RAID Installer Revision Number 6.10.09.200
AMD Software: Adrenalin Edition Adrenalin 25.3.1
ASRock Motherboard Utility ver:4.1.12
MediaTek Bluetooth driver ver:1.1037.0.424
MediaTek Wireless Lan driver ver:5.3.0.1825
Nahimic3 utility ver:1.10.2_APO4
Realtek high definition audio driver ver:6.4.0.2395_UAD_WHQL
Realtek Lan driver ver:10.071.0425.2024
APP Shop ver:2.0.0.6
ASRock Polychrome RGB ver:2.0.191

Hardware:
Systemboard ASRock X870E Taichi
CPU AMD Ryzen 7 9800X3D
RAID 0 NVME Read Performance Same as Non-RAID

CPU Cooler Cooler Master 360 Atmos Close-Loop AIO Liquid Cooler
Memory TeamGroup T-Force Delta  DDR5 Ram 32GB Kit (2x16GB) 7200MHz x2 = 64GB
Power SupplyCorsair HX1200i
Graphics - Using iGPU on the CPU for testing, no add-in GPU for now.
Storage Samsung 990 Pro 4TB NVMe Gen 4 SSD x2 (8TB)

Here are some example test results on three tests highlighting the issue with CrystalDiskMark v8.0.
[table]
[tr][th]Read Seq MB/s - 1MiB[/th][th]Write Seq MB/s - 1MiB[/th][th]Bus Config[/th][th]Comments[/th][th]Test Config[/th][/tr]
[tr][td]7143.922[/td][td]7001.150[/td][td]M2_2 and M2_3 and PCIe Gen 4x4[/td][td]RAID 0: Chipset only bus[/td][td]NVMe settings/profile[/td][/tr]
[tr][td]7342.190[/td][td]13748.016[/td][td]M2_1 and M2_2 and PCIe Gen 5x4 > Gen 4x4[/td][td]RAID 0: CPU and Chipset bus[/td][td]NVMe settings/profile[/td][/tr]
[tr][td]7148.922[/td][td]6921.065[/td][td]M2_3 and M2_4 and PCIe Gen 4x4[/td][td]RAID 0: Chipset only bus[/td][td]NVMe settings/profile[/td][/tr]
[/table]

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Caxton Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 10 hours 36 minutes ago Status: Offline Points: 35	Post Options Post Reply Quote Caxton Report Post Thanks(0) Quote Reply Topic: RAID 0 NVME Read Performance Same as Non-RAID Posted: 8 hours 57 minutes ago at 8:26am
	The pure read performance issue, e.g. only at single-drive levels has been duplicated using all connection combinations of: M2_1 + M2_2, M2_1 + M2_3, M2_2 + M2_3 and lastly M2_3 + M2_4. Uniquely write performance is only on par with expectations when using M2_1 (CPU bus) + M2_2 (Chipset bus). Contrariwise write performance drops to single drive speed when testing all other connection combinations. To prevent SSD throttling, active cooling (fan/heatsink) has been used on all connections except for M2_3 + M2_4. They are too close to support active cooling. Used ASRock's passive system board heatsink in that instanced. The included thermal resistors were used on all test scenarios to monitor real-time heat confirming all tests were performed well within design specs, e.g. to prevent throttling. Additionally, the room was maintained at constant 68 degrees Fahrenheit throughout testing. The inability to scale read performance in all combinations using RAID 0 indicates that the controller is not effectively parallelizing read operations between the two SSDs regardless of the bus CPU/Chipset or connections: M2_1, M2_2 and so on. All hardware/software are new, built exclusively for this rig. The BIOS is running version 3.20 A RAID 0 array is comprised of two Gen 4 NVME SSD's setup in BIOS. Win 11 was installed using Microsoft's public Windows 11 Installation Media while following the instructions noted in AMD RAID Driver v 9.3.3.00117 e.g. using rcbottom.inf, rcraid.inf and rccfg.inf during advanced setup to ensure the single 8TB single volume is recognize during first time setup. Windows OOBE was setup without issue. Post OOBE the following core apps/drivers were installed (in order): AMD Chipset Drivers Revision Number 7.02.13.148 AMD RAID Installer Revision Number 6.10.09.200 AMD Software: Adrenalin Edition Adrenalin 25.3.1 ASRock Motherboard Utility ver:4.1.12 MediaTek Bluetooth driver ver:1.1037.0.424 MediaTek Wireless Lan driver ver:5.3.0.1825 Nahimic3 utility ver:1.10.2_APO4 Realtek high definition audio driver ver:6.4.0.2395_UAD_WHQL Realtek Lan driver ver:10.071.0425.2024 APP Shop ver:2.0.0.6 ASRock Polychrome RGB ver:2.0.191 Hardware: Systemboard ASRock X870E Taichi CPU AMD Ryzen 7 9800X3D RAID 0 NVME Read Performance Same as Non-RAID CPU Cooler Cooler Master 360 Atmos Close-Loop AIO Liquid Cooler Memory TeamGroup T-Force Delta DDR5 Ram 32GB Kit (2x16GB) 7200MHz x2 = 64GB Power SupplyCorsair HX1200i Graphics - Using iGPU on the CPU for testing, no add-in GPU for now. Storage Samsung 990 Pro 4TB NVMe Gen 4 SSD x2 (8TB) Here are some example test results on three tests highlighting the issue with CrystalDiskMark v8.0. [table] [tr][th]Read Seq MB/s - 1MiB[/th][th]Write Seq MB/s - 1MiB[/th][th]Bus Config[/th][th]Comments[/th][th]Test Config[/th][/tr] [tr][td]7143.922[/td][td]7001.150[/td][td]M2_2 and M2_3 and PCIe Gen 4x4[/td][td]RAID 0: Chipset only bus[/td][td]NVMe settings/profile[/td][/tr] [tr][td]7342.190[/td][td]13748.016[/td][td]M2_1 and M2_2 and PCIe Gen 5x4 > Gen 4x4[/td][td]RAID 0: CPU and Chipset bus[/td][td]NVMe settings/profile[/td][/tr] [tr][td]7148.922[/td][td]6921.065[/td][td]M2_3 and M2_4 and PCIe Gen 4x4[/td][td]RAID 0: Chipset only bus[/td][td]NVMe settings/profile[/td][/tr] [/table]

Caxton Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 10 hours 36 minutes ago Status: Offline Points: 35	Post Options Post Reply Quote Caxton Report Post Thanks(0) Quote Reply Posted: 8 hours 55 minutes ago at 8:28am
	Sorry, the BB coding used to format the table did not work. Here is the data in CSV format for clarity. The text can be saved to a notepad as a *.CSV then opened in your favorite spreadsheet app. Read Seq MB/s - 1MiB ,Write Seq MB/s - 1MiB ,Bus Config,Comments,Test Config 7143.922,7001.15,M2_2 and M2_3 and PCIe Gen 4x4,RAID 0: Chipset only bus,NVMe settings/profile 7342.19,13748.016,M2_1 and M2_2 and PCIe Gen 5x4 > Gen 4x4,RAID 0: CPU and Chipset bus,NVMe settings/profile 7148.922,6921.065,M2_3 and M2_4 and PCIe Gen 4x4,RAID 0: Chipset only bus,NVMe settings/profile

M440 Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 12 Jul 2023 Status: Online Points: 4025	Post Options Post Reply Quote M440 Report Post Thanks(0) Quote Reply Posted: 5 hours 22 minutes ago at 12:01pm
	the nvme drives firmware is updated? this is BIOS/UEFI RAID? anyway i would blame: -os/drivers -nvme drives firmware -motherboard/bios/hardware
	asrock b650m/hdv.m2, ryzen 7700x@85watt

NDRE28 Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 08 Sep 2024 Location: Romania Status: Offline Points: 1545	Post Options Post Reply Quote NDRE28 Report Post Thanks(0) Quote Reply Posted: 4 hours 4 minutes ago at 1:19pm
	Hi! I don't know why this is so on your system. I am running 3x Samsung 970 Pro 1TB SSDs in RAID-0, on an ASRock X670E Taichi motherboard, with the same BIOS version & RAID driver as you. In my case, the sequential speeds are more than double, in benchmarks! In CrystalDiskMark: Seq.Read=9000+MB/s & Seq.Write=8000+MB/s. The Random Q1T1 Write=400+MB/s & Random Q1T1 Read=60+MB/s. Unfortunately, Random Read & Write at Q1T1 is what matters the most! (That's why I'll go with a DC P5800X Optane drive as my boot drive, as soon as it will arrive).