ML110 v ML350 - Which is the fastest ?

[Nick Marlow]

Hopefully not as dumb a question as it sounds. My tech dept. says that the ML110 with (say) a single 72Gb SCSI (10K) reacts and feels altogether faster than an ML350 with a 641 RAID card and 3 x 72 (10K Hot Swaps). Does anyone else think the same or are we missing a trick when setting up the 350. I thought that a 3 disk RAID would be faster than a single disk and the 350's a XEON compared to the P4 of the 110.

Would some RAM on the RAid make a difference ?

Or am I missing something more fundemental.

Does anyone know of a simple utility to measure a server's basic performance ?

[Raj_75]

Adding a cache module to the 641 array controller improve the performance.

Are you comparing RAID 0 against single SCSI drive or RAID 5 against single SCSI drive?

[Oleg Koroz]

see attachments

more
http://h18004.www1.hp.com/products/servers/proliantstorage/drives-enclosures/docs/index.html

[Nick Marlow]

Thanks both for the replies:
Raj: Hear what you are saying with the RAM on a 641. and To explain our normal configurations: ML110 we normally supply 1 x 72Gb SCSI HDD no RAID at all - and ML350 3 x 72Gb SCSI HDD RAID 5. - As a mere salesman - I was always taught that although RAID 5 has more to do, there are more drives to do it - so it should outperform a single drive ?? - If of course it is the drives that are causing the speed issue ?? - Hence the original message posting

KOV - Thanks for your reply - I'm either not seeing your attachment correctly or am missing the point - Where are you trying to point me ?? (I can't read your attachment on your posting - just get a web page not found error) but I can see the link you sent - but I'm not sure what to do with it (sorry - newbie, I'm afraid)

[Raj_75]

Hello Nick,

Yes, what I meant is RAM on the array will increase the speed.

I do not think you can compare single drive with a RAID 5 implementation. RAID 5 will give you fault tolerance but not the speed (compared with a single drive). Then you have to implement RAID 0 without fault tolerance.

[Oleg Koroz]

Open User Guide and Compare Type of Raids â think about for data protection or Speed
http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00280558/c00280558.pdf
Page 46 +++

http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00257513/c00257513.pdf

Others
http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00256920/c00256920.pdf
http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00419664/c00419664.pdf
http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00294139/c00294139.pdf