I have a system with the following setup:
M/B: Asus Z87 Deluxe
CPU: Intel Core i7-4770K
RAM: 32 GB
OS Disk: Kingston SSDNow 300 240 GB (Model no. SV300S37A/240G)
Data disks: 2x Western Digital Black 4 TB (Model no. WD4001FAEX)
O.S.: Windows 7 x64
The onboard SATA controller is configured for RAID mode, and the 2 data disks are configured as a single RAID 1 array; Windows correctly sees two drives, a 240 GB C: one and a ~4 TB D: one, both formatted using NTFS.
The problem is: the performance of the data volume is astonishingly bad.
Not so much on sustained data transfers, copying a big file from D: to C: is quite fast; but the general usage is just painful, random access is terrible and latency is a killer; sometimes all I/O just stops for several seconds, and the system locks up before resuming normal operation; copying or moving around small files is a pain, while copying or moving big files is much faster.
There are no errors anywhere, in the system event log or in the Intel RST software; the drives are brand new, and I've even updated the firmware on the Kingston SSD; I couldn't find any available firmware to download for the WD disks, their firmware release is 1.01L01.
I've tried several releases of the Intel RST software and drivers (up to the latest available one, 13.2.4.1000); the system BIOS is up to date, the RAID array has been fully initialized, and I enabled write-back caching; I also tried configuring the dynamic storage accelerator for high performance mode.
However, whatever I tried, the problem have never actually been solved, and it instead seem to be getting worse over time.
I'm I missing something here, or is the Intel onboard RAID controller just painfully slow? I know RAID 1 is not for performance but for redundancy (which is the exact reason I'm using it for), but shouldn't it at least be as fast a single drive? Something seems definitely wrong here.
M/B: Asus Z87 Deluxe
CPU: Intel Core i7-4770K
RAM: 32 GB
OS Disk: Kingston SSDNow 300 240 GB (Model no. SV300S37A/240G)
Data disks: 2x Western Digital Black 4 TB (Model no. WD4001FAEX)
O.S.: Windows 7 x64
The onboard SATA controller is configured for RAID mode, and the 2 data disks are configured as a single RAID 1 array; Windows correctly sees two drives, a 240 GB C: one and a ~4 TB D: one, both formatted using NTFS.
The problem is: the performance of the data volume is astonishingly bad.
Not so much on sustained data transfers, copying a big file from D: to C: is quite fast; but the general usage is just painful, random access is terrible and latency is a killer; sometimes all I/O just stops for several seconds, and the system locks up before resuming normal operation; copying or moving around small files is a pain, while copying or moving big files is much faster.
There are no errors anywhere, in the system event log or in the Intel RST software; the drives are brand new, and I've even updated the firmware on the Kingston SSD; I couldn't find any available firmware to download for the WD disks, their firmware release is 1.01L01.
I've tried several releases of the Intel RST software and drivers (up to the latest available one, 13.2.4.1000); the system BIOS is up to date, the RAID array has been fully initialized, and I enabled write-back caching; I also tried configuring the dynamic storage accelerator for high performance mode.
However, whatever I tried, the problem have never actually been solved, and it instead seem to be getting worse over time.
I'm I missing something here, or is the Intel onboard RAID controller just painfully slow? I know RAID 1 is not for performance but for redundancy (which is the exact reason I'm using it for), but shouldn't it at least be as fast a single drive? Something seems definitely wrong here.
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