Memory in RAID 0?

[Anaxagoras1986]

Why dont they run memory in a RAID 0 configuration like you can do with hard drives?

[NookieN]

The only reason RAID 0 works on hard drives is because the drives have a ram buffer that is faster than the drive itself.

In order to RAID memory, you would need a buffer on the chips that is faster than the chips. Basically, that would involve placing an SRAM cache on a DRAM chip (which would probably be too expensive relative to the benefit it would give).

There has been some talk of quad-band memory (QBM) that uses two banks of ram with a staggered clock signal on a single chip. Like RAID it would double throughput, but unlike RAID it is still a single physical device.

[cack01]

If you think about it, dual channel DDR is like raid 0.

[NookieN]

Well, in a way it is, but at the basic level single vs dual DDR is more analogous to 8-bit vs 16-bit SCSI. One has a wider data path than the other, thus more data can be transferred with each clock cycle. With RAID, the data path is the same, but you're spreading the load around.

[Anaxagoras1986]

OK thanks for the info.

[Darkseid]

Originally posted by cack01
If you think about it, dual channel DDR is like raid 0.

yeah i think that too