speed of RAID 5 array

darren teodarren at myrealbox.com
Sat Nov 16 04:30:00 CST 2002


I am an owner of 3 PE2650, and am also very concerned about the speed of
my Perc3/QC RAID5 array.

Is this very much slower then the Compaq RAID arrays?

Anyway to make them work better or buy something to rival the compaqs?

I really like the PowerEdge but its RAID capabilities are really
stopping me from buying more Compaqs...

-----Original Message-----
From: linux-poweredge-admin at dell.com
[mailto:linux-poweredge-admin at dell.com] On Behalf Of Alexander
Sent: Friday, November 15, 2002 3:33 AM
To: DELL linux/poweredge email list
Subject: speed of RAID 5 array

PE 4600, redhat 7.3 (2.4.18-4smp kernel), dual 2.8GHz xeons, PERC3-QC
card, 8 x 73GB SCSI drives in a RAID 5 config (attached to the PERC3

im running a benchmark on the RAID 5 array. the package is bonnie++
(v1.02c). test results on the RAID 5 array are:

46MB/sec write, 24MB/sec re-write, 85MB/sec read.

now, im not complaining cause that is faster than our network can go
anyway, but is that a good speed for the hardware i have?

just curious, thanks!

---                                                        ---
   Alex Lazarevich | Systems | Imaging Technology Group
   alazarev at itg.uiuc.edu | (217)244-1565 | www.itg.uiuc.edu
---                                                        ---

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