*From:* Ran User [mailto:ranuse...@gmail.com]
*Sent:* dinsdag 30 oktober 2012 4:33
*To:* user@cassandra.apache.org
*Subject:* Re: idea drive layout - 4 drives + RAID question
Have you considered running RAID 10 for the data drives to improve MTBF?
On one hand Cassandra
:33
To: user@cassandra.apache.org
Subject: Re: idea drive layout - 4 drives + RAID question
Have you considered running RAID 10 for the data drives to improve MTBF?
On one hand Cassandra is handling redundancy issues, on the other hand,
reducing the frequency of dealing with failed nodes
[mailto:ranuse...@gmail.com]
Sent: dinsdag 30 oktober 2012 4:33
To: user@cassandra.apache.org
Subject: Re: idea drive layout - 4 drives + RAID question
Have you considered running RAID 10 for the data drives to improve MTBF?
On one hand Cassandra is handling redundancy issues, on the other hand
*From:* Ran User [mailto:ranuse...@gmail.com]
*Sent:* dinsdag 30 oktober 2012 4:33
*To:* user@cassandra.apache.org
*Subject:* Re: idea drive layout - 4 drives + RAID question
Have you considered running RAID 10 for the data drives to improve MTBF?
On one hand Cassandra
For a server with 4 drive slots only, I'm thinking:
either:
- OS (1 drive)
- Commit Log (1 drive)
- Data (2 drives, software raid 0)
vs
- OS + Data (3 drives, software raid 0)
- Commit Log (1 drive)
or something else?
also, if I can spare the wasted storage, would RAID 10 for cassandra data
I'm not sure whether the raid 0 gets you anything other than headaches
should one of the drives fail. You can already distribute the
individual Cassandra column families on different drives by just
setting up symlinks to the individual folders.
2012/10/30 Ran User ranuse...@gmail.com:
For a
I was hoping to achieve approx. 2x IO (write and read) performance via RAID
0 (by accepting a higher MTBF).
Do believe the performance gains of RAID0 are much lower and/or are not
worth it vs the increased server failure rate?
From my understanding, RAID 10 would achieve the read performance
Have you considered running RAID 10 for the data drives to improve MTBF?
On one hand Cassandra is handling redundancy issues, on the other
hand, reducing the frequency of dealing with failed nodes
is attractive if cheap (switching RAID levels to 10).
We have no experience with software RAID
