Lots of folk use a single disk or raid-1 for the system and commit log and
raid-0 for the data volumes http://wiki.apache.org/cassandra/CassandraHardware
Your money is probably better spent on more nodes with more disks and more
memory. More nodes is always better.
Happy to hear reasons
Thanks Aaron. I'll make sure to copy the system tables.
Another thing -- do you have any suggestions on raid configurations for main
data drives? We're looking at RAID5 and 10 and I can't seem to find a
convincing argument one way or the other.
Thanks again for your help.
On Mon, Jun 6, 2011
El 6/14/2011 1:43 PM, Eric Czech escribió:
Thanks Aaron. I'll make sure to copy the system tables.
Another thing -- do you have any suggestions on raid configurations
for main data drives? We're looking at RAID5 and 10 and I can't seem
to find a convincing argument one way or the other.
Hi, I have a quick question about migrating a cluster.
We have a cassandra cluster with 10 nodes that we'd like to move to a new DC
and what I was hoping to do is just copy the SSTables for each node to a
corresponding node in the new DC (the new cluster will also have 10 nodes).
Is there any
Sounds like you are OK to turn off the existing cluster first.
Assuming so, deliver any hints using JMX then do a nodetool flush to write out
all the memtables and checkpoint the commit logs. You can then copy the data
directories.
The System data directory contains the nodes token and the
