Sjuk prestanda i RAID

1: Kolla så att du har samma version på drivrutinerna som på bios till raidcontrolern.
2: Kolla så att diskarna går i ATA100

Jag hade dom problemen innan.

Flyttad till Lagringsmedia

Inte säkert att senaste versionen av drivrutinerna är samma som den version av bios du har. Flasha först och lägg sen in tillhörande drivisar.
Jag kollar hastigheten på diskarna i raidconfigen. Får fram den genom ctrl+H under uppstarten.

Lycka till

kolla så du har DMA påslaget kanske?

Sätt båda hårddiskarna som Master or Stand Alone på varsin RAID kanal, annars får man unken prestanda...

MalZon: DMA kan du slå på om du kör i WIn2k såhär:

My Computer>Properties>Hardware>Device Manager>IDE ATA/ATAPI Controller>välj controller och properties>Advanced Setting och sedan transfermode... där kan du välja mellan PIO och DMA.

du måste ändra från pio i bios också till dma. i all fall på lite äldre moderkort. Jag fattar inte riktigt varför det fortafrande finns pio, de allra flesta enheterna tex cd har ju stöd för udma33.

PIO

Programmed Input/Output (PIO) is a way of moving data between devices in a computer in which all data must pass through the processor. The Advanced Technology Attachment/Integrated Drive Electronics standard specifies three PIO data transfer rates (mode 0 at 3.3 MBps, mode 1 at 5.2 MBps, and mode 2 at 8.3 MBps). The newer Advanced Technology Attachment standard specifies two higher data transfer rates (mode 3 at 11.1 MBps and mode 4 at 16.6 MBps).
A newer alternative to PIO is Direct Memory Access (DMA). It's expected that PIO will be dropped from future industry standards, replaced entirely by DMA and Ultra DMA.

Direct Memory Access

Direct Memory Access (DMA) is a capability provided by some computer bus architectures that allows data to be sent directly from an attached device (such as a disk drive) to the memory on the computer's motherboard. The microprocessor is freed from involvement with the data transfer, thus speeding up overall computer operation.
Usually a specified portion of memory is designated as an area to be used for direct memory access. In the ISA bus standard, up to 16 megabytes of memory can be addressed for DMA. The EISA and Micro Channel Architecture standards allow access to the full range of memory addresses (assuming they're addressable with 32 bits). Peripheral Component Interconnect accomplishes DMA by using a bus master (with the microprocessor "delegating" I/O control to the PCI controller).

An alternative to DMA is the Programmed Input/Output (PIO) interface in which all data transmitted between devices goes through the processor. A newer protocol for the ATA/IDE interface is Ultra DMA, which provides a burst data transfer rate up to 33 MB (megabytes) per second. Hard drives that come with Ultra DMA/33 also support PIO modes 1, 3, and 4, and multiword DMA mode 2 (at 16.6 megabytes per second).

Ultra DMA (UDMA, or, more accurately, Ultra DMA/33) is a protocol for transferring data between a hard disk drive through the computer's data paths (or bus) to the computer's random access memory (RAM). The Ultra DMA/33 protocol transfers data in burst mode at a rate of 33.3 MBps (megabytes per second), twice as fast as the previous Direct Memory Access (DMA) interface.
Ultra DMA was developed as a proposed industry standard by the Quantum Corporation, makers of hard disk drives, and Intel, makers of chipsets that support computer bus technology.

Ultra DMA support in your computer means that it will boot (start) and open new applications more quickly. It will also help users of graphics-intensive and other applications that require large amounts of access to data on the hard drive. Ultra DMA uses Cyclical Redundancy Checking (CRC), offering a new level of data protection.

Because the Ultra DMA protocol is designed to work with legacy application PIO and DMA protocols, it can be added to many existing computers by installing an Ultra DMA/33 Peripheral Component Interconnect adapter card. Ultra DMA uses the same 40-pin Integrated Drive Electronics interface cable as PIO and DMA.