ProLiant Servers - Netservers

Slow RAID performance 380dl G3

 
jason ladelfa
Occasional Contributor

Slow RAID performance 380dl G3

Hello all.

I have three Proliant 380dl g3's with a couple of different RAID configurations that, in my opinion, seem to be very slow. Here are some benchmarks I ran:
RAID5:
4 REPLIES 4
jason ladelfa
Occasional Contributor

Re: Slow RAID performance 380dl G3

No thoughts? I can't believe how slow the performance is! My desktop is faster. I have a dell that reads at 780mb/s and has similar speeds across the board. Same speed drives (15k), same raid config (5).

Is my RAID set up correctly? It can't be....Help!
Hense, Klaus
Valued Contributor

Re: Slow RAID performance 380dl G3

Hallo,
in alll HP Servers with Raidcontrollers the DISK Write Cache is off.
Have you a BBWC?
then you can enable the WriteCache on the Raidcontroller
RAID5 is slower than Raid1 ...
klhe
jason ladelfa
Occasional Contributor

Re: Slow RAID performance 380dl G3

OK, This just can't be right. I ran a disk speed utility on the three different RAID volumes on my domain controller. These speed are simply abysmal.

Theoretically, how fast should the different RAID sets be going with a 5i smart array? There has to be a spec sheet. I'm sure it's faster than what I'm getting, and if that's the case, how can I reconfigure mine? These are production servers, and they are slooooow. I'm trying to clean up the job the old system admin did before me.

Results:

LMGDC C Drive RAID 1+0 (stripe size 256)

--------------------------------------------------
CrystalDiskMark 2.2 (C) 2007-2008 hiyohiyo
Crystal Dew World : http://crystalmark.info/
--------------------------------------------------

Sequential Read : 62.443 MB/s
Sequential Write : 29.376 MB/s
Random Read 512KB : 43.301 MB/s
Random Write 512KB : 27.333 MB/s
Random Read 4KB : 1.006 MB/s
Random Write 4KB : 0.769 MB/s

Test Size : 100 MB
Date : 2009/04/10 16:20:43




LMGDC D Drive RAID 5 (stripe size 64)

--------------------------------------------------
CrystalDiskMark 2.2 (C) 2007-2008 hiyohiyo
Crystal Dew World : http://crystalmark.info/
--------------------------------------------------

Sequential Read : 103.257 MB/s
Sequential Write : 16.529 MB/s
Random Read 512KB : 56.403 MB/s
Random Write 512KB : 11.935 MB/s
Random Read 4KB : 1.023 MB/s
Random Write 4KB : 0.407 MB/s

Test Size : 100 MB
Date : 2009/04/10 16:28:18



LMGDC F Drive RAID 0 (stripe size 256)

--------------------------------------------------
CrystalDiskMark 2.2 (C) 2007-2008 hiyohiyo
Crystal Dew World : http://crystalmark.info/
--------------------------------------------------

Sequential Read : 55.043 MB/s
Sequential Write : 46.493 MB/s
Random Read 512KB : 28.435 MB/s
Random Write 512KB : 34.964 MB/s
Random Read 4KB : 0.647 MB/s
Random Write 4KB : 0.582 MB/s

Test Size : 100 MB
Date : 2009/04/10 16:34:35
jason ladelfa
Occasional Contributor

Re: Slow RAID performance 380dl G3

OK, this is just unaccaptable. I bought the bbwc and installed it.

Speeds increase a little, but these speeds are still horrible. I've called support, but there only suggestion was to buy the bbwc.