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<TITLE>RE: [DRBD-user] Anyone Get Write Speeds over 150MB/s Writes using DRBD?</TITLE>
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<P><FONT SIZE=2>Rik,<BR>
<BR>
I believe in your case it's going to be all about the speed of the drives. I'm not sure that even 8 10k rpm drives configured with stripe/parity will achieve this in a standard environment. <BR>
<BR>
The bigger question isn't the speed of the writes but rather the delta changes per second to the database.<BR>
<BR>
<BR>
-----Original Message-----<BR>
From: drbd-user-bounces@lists.linbit.com on behalf of Rik Herrin<BR>
Sent: Thu 3/9/2006 3:06 AM<BR>
To: drbd-user@lists.linbit.com<BR>
Subject: [DRBD-user] Anyone Get Write Speeds over 150MB/s Writes using DRBD?<BR>
<BR>
Hi,<BR>
I am currently evaluating the use of drbd for<BR>
real-time replication of an Oracle DB. The hardware<BR>
that the Oracle DB will be running on involves 2<BR>
dual-core AMD Opterons, 4 GB RAM, an LSI MegaRAID<BR>
320-2X SCSI RAID Controller with 512MB NVRAM, and 10k<BR>
SCSI Hard drives (8 of them). An Intel Pro/1000 MT<BR>
Quad Pro Server Adapter card will be used for<BR>
networking, with 2 ports dedicated to the DRBD<BR>
connection to a similarly configured machine. Would<BR>
drbd be a bottleneck in this configuration? The NIC<BR>
should be able to deliver about 180MB/s or so and so<BR>
should the SCSI RAID controller. Anyone have<BR>
experience with this type of hardware? Thank you for<BR>
your time.<BR>
<BR>
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