Author Topic: SKuzzy, i have a SCSI ? for ya.... (Read 300 times)

mason22 · « **on:** February 10, 2003, 09:44:35 AM »

thinking about upgrading SCSI card and adding a HD.

i currently have 2940UW, and 2 SCSI HD's - 16gig and a 4gig. I think the 2940 only goes up to 80meg transfer bandwidth...the new card i have is a 39XX (can't remember the exact number as i am not at home with the card)....it supports the U160 bandwidth. The new HD is a 73gig 10K rpm (again, i'm not sure on the brand)...

question is: Any steps i need to take when swapping out the SCSI cards and keeping my current HD and adding the 73gig drive?

i'm assuming it should be just a swap n plug (making sure SCSI ID's are different for the HDs). Just wondering of there will or might be issues with the controller cards?

i'm using XP Pro. Thanks for any help.

-mas

Skuzzy · « **Reply #1 on:** February 10, 2003, 11:04:31 AM »

The 39xx cards use a different driver from the 29xx cards. That will be the only issue, as they all use the same translation scheme so the HD partitions will be preserved.

Mini D · « **Reply #2 on:** February 10, 2003, 12:39:23 PM »

Would there be an issue with having them all on the same chain? I thought that the older systems would limit the throughput to the lowest transfer rate on the chain. Might be wrong on that, but that idea is running around in the cloudy recesses of my mind.

MiniD

Skuzzy · « **Reply #3 on:** February 10, 2003, 01:44:30 PM »

That's only true if you mix LVD drives with non-LVD drives. Then the adapter uses the slowest device speed for all devices.

The 39xx has internal connectors for both LVD and non-LVD drives, so it is best to split them if that is the case.

By the way, if you get the 39xx kit, it comes with a very nice terminated LVD cable.

bloom25 · « **Reply #4 on:** February 10, 2003, 02:46:54 PM »

Have you already put WinXP on there? Windows XP has a very serious SCSI performance bug that limits writes to only around 10 MB/sec, which is around 1/5 of what most modern 10K rpm SCSI drives can achieve. It has not been fixed yet and from what I read, it is not a high priority. Most people running SCSI gear and Windows are running 2000 because of this.

mason22 · « **Reply #5 on:** February 10, 2003, 03:17:34 PM »

Quote

Originally posted by bloom25
Have you already put WinXP on there? Windows XP has a very serious SCSI performance bug that limits writes to only around 10 MB/sec, which is around 1/5 of what most modern 10K rpm SCSI drives can achieve. It has not been fixed yet and from what I read, it is not a high priority. Most people running SCSI gear and Windows are running 2000 because of this.

wow...yup, already installed. i've never really tried to benchmark so, hence i'm not sure how fast they are as of yet.

btw, how do you check the data rate? (i can play with photoshop and a stop watch)...