RAID 1.5 With IDE: Added Value Or Eyewash?

Test Setup

Test System
Processor AMD Athlon XP 2200+
Motherboard DFI LANParty KT400A
VIA KT400A Chipset
BIOS : May 6, 2003
RAM 256 MB DDR333/PC2700, CL2 Corsair Micro
Controller & Hard Drives VIA VT8235 UltraATA/133
HighPoint HPT372N On-Board
BIOS 2.342
2x Western Digital WD2000BB
Display Adapter nVIDIA GeForce3 Ti4200, 64 MB
Network Card 3COM 905TX PCI 100 MBit
Operating System Windows 2000 Professional
5.00.2195, Service Pack 3
Benchmarks and Tests
Performance Measurements HD Tach 2.61, c’t h2benchw
I/O performance Intel IOMeter
Drivers and Settings
Graphics Driver NVIDIA Reference Driver 41.09
Drivers Intel Application Accelerator 2.3
DirectX Version 9.0
Resolution 1024 x 768, 16 Bit, 85 Hz refresh

Owing to time restraints, we limited the capacity of the RAID array to 25 GB. Tests on total capacities of up to 400 GB would have taken much longer and would not have produced a different result. All the low-level measurements (IOMeter, HDTach) are only run without partitions anyway and refer to the total capacity of the RAID array.

Create a new thread in the US Reviews comments forum about this subject
This thread is closed for comments
1 comment
Comment from the forums
    Your comment
  • lifeisstudy
    So RAID 1.5 won't work because the heads of the disk still need to move to the next data block to read... If you skip blocks, you still have to move past them.

    What about RAID 1.5 with Solid State disks. You have nothing to move, yet you can double your read speed with mirroring. Sounds perfect for server caches.