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hp dl180 poor disk performance

viv-it
Occasional Visitor

hp dl180 poor disk performance

i have a new dl180g6 with 8GB of RAM and two quad xeons. it has 4 15k 450G SAS drives configured in one RAID 5 group. i have installed the BBWC module and it is showing up as 75% write and 25% read. the server is running W2k8. our engineers are complaining of poor write performance and it appears to be around 70mb/s write and 140mb/s read. is this what can be expected out of this machine? if so, it is slower than a single xeon PC with a 7200 RPM SATA drive.

does anyone have any insight on whether this is what can be expected or what to do?

thanks
7 REPLIES
Jan Soska
Honored Contributor

Re: hp dl180 poor disk performance

could you provide more detailed config - type of SmartArray, firmware/driver versions?

Jan
viv-it
Occasional Visitor

Re: hp dl180 poor disk performance

hi,

it is a P410 running f/w 1.66. driver version is 6.12.3.64 dated 10/9/2008.

thanks
Jan Soska
Honored Contributor

Re: hp dl180 poor disk performance

hmm, that pretty old, check this link http://h20000.www2.hp.com/bizsupport/TechSupport/DriverDownload.jsp?lang=en&cc=us&prodNameId=3883931&taskId=135&prodTypeId=329290&prodSeriesId=3883890〈=en&cc=us - update driver, bios, maybe drives firmware as well, let uz know

Jan
viv-it
Occasional Visitor

Re: hp dl180 poor disk performance

ok. drives f/w is ok and i will do the rest. what should i expect (roughly) on write performance? is 70mb/s ok or is it really bad?
Jan Soska
Honored Contributor

Re: hp dl180 poor disk performance

I would expect more MB/s write, but you must count with raid5 penalty.

what was your performance with single sata drive?

Jan
viv-it
Occasional Visitor

Re: hp dl180 poor disk performance

80 mb/s
Jan Soska
Honored Contributor

Re: hp dl180 poor disk performance

I'll check or config on older hw - 4x160GB u320 drives and let you know

Jan