Adaptec 2940UW

Buzz · Post by **Buzz** » Sun Mar 09, 2003 5:23 pm

I got some old servers from work, and this controller was in one of them

It's old, but better than what i had before.

What HDD's can i connect to it?
Can i connect LVD drives to it... like 15k cheetas? What about HVD?
Please enlighten me

Hipnotic_Tranz · Post by **Hipnotic_Tranz** » Sun Mar 09, 2003 8:07 pm

if I remember right, UW = 40MB/s so connecting a 15kRPM SCSI drive would be an entire waste. You'll need a u160 controller to take advantage of those drives. The drives you're hookin' up to that kinda controller will be some pretty old 4-10gig SCSI drives.

Hell, I'd say it's not even worth it unless you just wanna run some CD-ROM's from it.

Gand1 · Post by **Gand1** » Sun Mar 09, 2003 8:35 pm

DocSilly would be your best person to ask reguarding any SCSI questions (granted he points you to links, but they are most helpfull in understanding SCSI). THe SCSI card you have is decent and a good general all purpose card. But like Hipno stated, don't bother with newer SCSI drives with this card, it WILL be a waste. But, you can find many an older SCSI drive on the for sale forums if you want to try you hand at comming over to the dark side!

DocSilly · Post by **DocSilly** » Mon Mar 10, 2003 2:13 am

You could get the first generation Seagate Cheetah X15, the transfer rate is 29-41MB/s, a nice and fast HDD, my current bootdrive. You could hook it up on the 68-pin UW channel using an UW-cable with an active terminator, the Cheetah X15 will automatically run in compatible UW mode.

You want at least an U2W (80MB/s LVD) or U160 controller (160MB/s) for faster drives. Storagereview has first benchmarks of Maxtors new Atlas 15K, that drive has a transfer rate from 55.5-73.5 MB/s (Cheetah 15K.3 delivers 51.1-76.4 MB/s), that's the transfer rate of a 2-HDD IDE RAID-0 from a single drive, not to mention the ultra-fast accesstimes

rool

Forget about HVD drives, very old technology, slow, loud and hot and you can't usually buy a HVD controller, they won't run on your 2940UW.

Oh, and here the promised URL > http://scsifaq.org:9080/scsi_faq/ Check out the Quick Start Guide while the page is still available.

Buzz · Post by **Buzz** » Mon Mar 10, 2003 2:22 am

Thanx for your answers all!

I knew it would be a waste with the newer drives on this controller

only wanted to know if i could.

It's easyer to justify bying just the disk than both a disk and new controller... and when i have the disk... i can justify getting the controller too

Wasn't sure how much throughput the new drives give... so thanx again Doc

Speaking of Raid... one of the old servers i got was a dual P-133, 256MB RAM and it had a Molex DAC960P-2 dual channel SCSI controller and 14 x 2.1GB SCSI (50pin) disks!!!

5 interneal and the rest in 2 separate external Raid towers.

Cool to play with... not all disks are ok... but i installed Win2k on it using 4 disks in Raid-0

How about that?? Still slow as hell though

he he