Hi We have a HP proliant ML350 server with hardware raid controller with 4 x scsi 320 HD (10K) using raid 1+0 for data, when we access the data on the client's machine it seems to be slower than the single IDE HD that I have just instatlled on the server. I know it's not mirrored but shouldn't the scsi still be faster than the IDE. By just looking at the response of browsing the folders it comes up instantly compare to data stored on the scsi. I think logging in and access data is just slow which slows down all the client's machine especially in the mornings, I have tried raid 5 with 3 HD also. Is the server software setup or hardware setup incorrectly? I have performance monitor the disk access and it's slow. Thanks

How is the raid array terminated? Does the raid bios list speed per drive? are they all the same and what is that listing? Raid 0+1 [not 1+0 since that is raid 10 which is a different animal than 0+1]is fast since it is a stripe that is then mirrored. I would look at misconfigured bios, bad cables and termination as being the sources of your slowness. Knowing the correct answer and giving a correct answer, are two different things

See info: Smart Array 642 Controller Controller Smart Array 642 Controller Bus Interface 64-Bit PCI Controller Location Slot 5 RAID ADG status Disabled Hardware Revision B Firmware Version 2.34 Rebuild Priority Low Expand Priority Low Current Surface Scan Delay 15 sec Number of Arrays 2 Number of Logical Drives 2 Number of Physical Drives 6 Physical Drives Attached to Port 2 SCSI ID 0, 146.8 GB (Parallel SCSI) SCSI ID 1, 146.8 GB (Parallel SCSI) SCSI ID 2, 146.8 GB (Parallel SCSI) SCSI ID 3, 146.8 GB (Parallel SCSI) SCSI ID 4, 72.8 GB (Parallel SCSI) SCSI ID 5, 72.8 GB (Parallel SCSI) All Physical Drives Assigned Yes Array Accelerator Present Yes Cache Status Enabled Accelerator Ratio 100% Read /0% Write Total Memory on Controller 64 MB Battery Pack Count 0 Drive speed is 10K, raid 1+0 both 2 x Scsi for OS and 4 x scsi on data. NOt sure what is the expand and rebuild priority, is the rebuild when one drives fails?

You have two arrays. What does disk manager say the sizes are? 72gig for one and 192gig for the other? I looked up your controller and it does raid 1, 5 and 10. http://h18000.www1.hp.com/products/... Though compaqs explaination of how raid works is a bit.. inaccurate. You should check the slot the controller card is in. Make sure it is a 64-bit, 133-MHz PCI-X bus (1033 MB/s bandwidth) slot. If in a lesser slot performance will be impacted. According to the online spec sheet you only have one 133mhz pci-x slot and that is the last one from the cpu/ram chips or closest to the floor. see here: http://h18004.www1.hp.com/products/... BTW your post is a bit confusing when you say "raid 1+0 both 2 x Scsi for OS and 4 x scsi on data." You can have raid 10 for the 4 drives but you can only be doing mirroring with the two drives. see here: http://www.bytepile.com/raid_class.php You need to check these also "I would look at misconfigured bios, bad/misconfigured cables and termination ". Docs mention diagnosics so you should run them. Knowing the correct answer and giving a correct answer, are two different things

Yes, the slot is in the correct place 133mhz PCI slot and the raid 1+0 is setup in the raid controller, it gives you raid 1, 5 and 1+0 option. I have also run the diganostic provide and there is no problem ,just seems a little slow to me, there are 6 x scsi HD installed.

You have two arrays. What does disk manager say the sizes are? 72gig for one and 192gig for the other? BTW your post is a bit confusing when you say "raid 1+0 both 2 x Scsi for OS and 4 x scsi on data." You can have raid 10 for the 4 drives but you can only be doing mirroring with the two drives. Can you please clarify which is what. This will become a really long thread if I have to ask the questions multiple times :-] Knowing the correct answer and giving a correct answer, are two different things

Yes 2 arrays: Parallel SCSI array A Logical drive 1 (69459MB raid 1+0) 2 x SCSI 72G HD Parallel SCSI Array B logicial drive 2 (280019MB, raid 1+0) 4 x SCSI 146.8G HD