https://community.solidigm.com/t5/archive/why-such-poor-benchmarks-with-three-x25m-raid0-on-adaptec-5405/m-p/5125#M4987 <P>I have three 80 GB X25-m (G2) on an Adaptec 5405. The partition is aligned. Here's what I get on AS SSD Benchmark:</P><P>238 MB/ SEC reads are not what I expected. I expected about 600 MB/ SEC. Write speed is mediocre. I've got the latest Win64 drivers from Adaptec installed. 5405 firmware is V5.2-0 16507. I have read and write-back cache enabled, I have a battery-backup for the Adaptec 5405. This is not worth all the money this setup cost me. The drives are new, they cost about $800 total and the controller was $225 on eBay.</P><P></P><P>Using my X58 motherboard, here are the results from AS SSD Benchmark using these three X25M (G2) drives in Raid0 off the ICH10:</P><P>Read performance looks great, due to cache. Write performance is awful.</P><P></P><P>WHERE'S THE BLISTERING SPEED THAT INTEL PROMISES?</P><P></P><P>If I'm doing something wrong, someone please let me know.</P> Tue, 30 Mar 2010 07:35:47 GMT idata 2010-03-30T07:35:47Z https://community.solidigm.com/t5/archive/why-such-poor-benchmarks-with-three-x25m-raid0-on-adaptec-5405/m-p/5125#M4987 <P>I have three 80 GB X25-m (G2) on an Adaptec 5405. The partition is aligned. Here's what I get on AS SSD Benchmark:</P><P>238 MB/ SEC reads are not what I expected. I expected about 600 MB/ SEC. Write speed is mediocre. I've got the latest Win64 drivers from Adaptec installed. 5405 firmware is V5.2-0 16507. I have read and write-back cache enabled, I have a battery-backup for the Adaptec 5405. This is not worth all the money this setup cost me. The drives are new, they cost about $800 total and the controller was $225 on eBay.</P><P></P><P>Using my X58 motherboard, here are the results from AS SSD Benchmark using these three X25M (G2) drives in Raid0 off the ICH10:</P><P>Read performance looks great, due to cache. Write performance is awful.</P><P></P><P>WHERE'S THE BLISTERING SPEED THAT INTEL PROMISES?</P><P></P><P>If I'm doing something wrong, someone please let me know.</P> Tue, 30 Mar 2010 07:35:47 GMT https://community.solidigm.com/t5/archive/why-such-poor-benchmarks-with-three-x25m-raid0-on-adaptec-5405/m-p/5125#M4987 idata 2010-03-30T07:35:47Z https://community.solidigm.com/t5/archive/why-such-poor-benchmarks-with-three-x25m-raid0-on-adaptec-5405/m-p/5126#M4988 <P>Adaptec tech support pointed out that I had mistakenly set up my three X25-M drives as a SPANNED PARTITION and not RAID0! I GOOFED! Changing over to RAID0 and copying the backed-up drive image back onto the array did the trick!</P><P></P><P></P> Thu, 08 Apr 2010 10:32:59 GMT https://community.solidigm.com/t5/archive/why-such-poor-benchmarks-with-three-x25m-raid0-on-adaptec-5405/m-p/5126#M4988 idata 2010-04-08T10:32:59Z