nd4spdbh2
08-29-06, 11:08 PM
OK i kno there has been a big thread of the Seagate 250gb Perpindicular hds on new matrix raid setups... but id thought id share my expierence on a older ICH5R chip thats on my main computers Abit IC7-G... so here is the story
WOW is all i have to say... I am in the process of building a new computer and im getting parts here and there and today arived the second of 2 Seagate 7200.10 250gb Perpindicular Recording 16mb chache SATA 2 drives. need less to say i brought the drive up stairs unwrapped it from the bubble wrap and static bag...popped all the bubble wrap because it was the good kind... and just thought of the possibilities these things could do....
NOW before i started hooking drives to my computer... i have 2 sata cables and 2 sata plugs... and i currently have 2 Seagate 7200.7 80gb hds in a raid 0config... i coppied all my important stuff off thoes 2 drives cus i didnt kno if i was going to be able to reinstate the array when i was done playing. So once the files were coppied... the fun began... i wanted to get a base line so i hooked both the drives up on the ICH5R just as normal disks... heres an hd tach of a single drive (both drives were literally identical in the readouts)
http://teamlosi.andrevas.net/pics/comp/perpraid/single250.JPG
This was quite amazing to me 65.7MB/s average sequential and it was maxing out the bandwidth that UDMA 6 had to offer (ICH5R defaults to UDMA 6 when drives arnt in raid) but the burts was from chache to host... not drive to host... but still DAMN!!!!!
Now the fun began... i restarted... did CTRL-I made a raid array with a 16KB stripe size, it seems to be the best rounded.. and booted into windows.... Now from my previous array i was gettin about 93% the Sequential average that could be therorized from multiplying the sequential average of one of the drives by 2... a single would do about 47.4MB/s (47.7x2=95)... the 2 of them 88.8 SO before i ran HD TACH on these new hds i said to my self... they will probably do about 122MB/s NOT BAD !!! AT ALL!!! so i ran an hd tach... my theory was wrong...
http://teamlosi.andrevas.net/pics/comp/perpraid/raid.JPG
IN A GOOD WAY IT WAS WRONG... i got exactly double the speed of a single drive on a old discontinued mobo with an old raid controler... 131.5MB/S sequential and 203MB/s..... my friends raptor array does the SAME THING!!!!... only louder, hotter, and with less space!
ANY ways all in all these new seagate perpindicular drives are FREAKIN AMAZING... even on old tech they shine like the rest... i just cant wait to get my Asus P5W DH ... and setup a matrix raid with a raid 0 on the first 50gb of what you see above... can you say 160MB/s average sequential... and 8ms random access!!!
OH and btw... my original raid array had no problem being reset back up... i didnt have to do a thing the mobo just recognized it and went on with its business.
WOW is all i have to say... I am in the process of building a new computer and im getting parts here and there and today arived the second of 2 Seagate 7200.10 250gb Perpindicular Recording 16mb chache SATA 2 drives. need less to say i brought the drive up stairs unwrapped it from the bubble wrap and static bag...popped all the bubble wrap because it was the good kind... and just thought of the possibilities these things could do....
NOW before i started hooking drives to my computer... i have 2 sata cables and 2 sata plugs... and i currently have 2 Seagate 7200.7 80gb hds in a raid 0config... i coppied all my important stuff off thoes 2 drives cus i didnt kno if i was going to be able to reinstate the array when i was done playing. So once the files were coppied... the fun began... i wanted to get a base line so i hooked both the drives up on the ICH5R just as normal disks... heres an hd tach of a single drive (both drives were literally identical in the readouts)
http://teamlosi.andrevas.net/pics/comp/perpraid/single250.JPG
This was quite amazing to me 65.7MB/s average sequential and it was maxing out the bandwidth that UDMA 6 had to offer (ICH5R defaults to UDMA 6 when drives arnt in raid) but the burts was from chache to host... not drive to host... but still DAMN!!!!!
Now the fun began... i restarted... did CTRL-I made a raid array with a 16KB stripe size, it seems to be the best rounded.. and booted into windows.... Now from my previous array i was gettin about 93% the Sequential average that could be therorized from multiplying the sequential average of one of the drives by 2... a single would do about 47.4MB/s (47.7x2=95)... the 2 of them 88.8 SO before i ran HD TACH on these new hds i said to my self... they will probably do about 122MB/s NOT BAD !!! AT ALL!!! so i ran an hd tach... my theory was wrong...
http://teamlosi.andrevas.net/pics/comp/perpraid/raid.JPG
IN A GOOD WAY IT WAS WRONG... i got exactly double the speed of a single drive on a old discontinued mobo with an old raid controler... 131.5MB/S sequential and 203MB/s..... my friends raptor array does the SAME THING!!!!... only louder, hotter, and with less space!
ANY ways all in all these new seagate perpindicular drives are FREAKIN AMAZING... even on old tech they shine like the rest... i just cant wait to get my Asus P5W DH ... and setup a matrix raid with a raid 0 on the first 50gb of what you see above... can you say 160MB/s average sequential... and 8ms random access!!!
OH and btw... my original raid array had no problem being reset back up... i didnt have to do a thing the mobo just recognized it and went on with its business.