Im currently doing some homework trying to figure out how to best structure a system Ive planning on building.
I'm curious how the two setups below would perform throughput wise and also from a data safety/redundancy perspective. The data that I need quick random access to I am planning on storing in a striped array but wondered if the benefits of a larger spindle count RAIDZ2 array might provide better access times?
Setup 1
2 Striped 4TB hard disks.
1 drive redundancy
Max throughput for read = 2 * single speed, approximately 200MB/s (benefits of multiple drives?)
Max throughput for write = write at single drive speeds, approximately 100MB/s (no write benefit to multiple drives?)
Setup 2
Rather than put that 4TB of data onto a separate striped vdev, I could lump it all together and store it on a 12 drive RAIDZ2 in the same pool.
2 drives of redundancy data (so better than a dual striped array by one disk)
Max read throughput = ????
Max write throughput= ????
Some misc info...
The 4tb data is mainly data files and audio data, its all backed up to offsite storage via Crashplan
The 12 * 4TB is video files and will be backed up to an older hardware raid6 system on site for the time being.
would appreciate any guidance or pointers to theoretical speeds, thanks in adv
Ian
I'm curious how the two setups below would perform throughput wise and also from a data safety/redundancy perspective. The data that I need quick random access to I am planning on storing in a striped array but wondered if the benefits of a larger spindle count RAIDZ2 array might provide better access times?
Setup 1
2 Striped 4TB hard disks.
1 drive redundancy
Max throughput for read = 2 * single speed, approximately 200MB/s (benefits of multiple drives?)
Max throughput for write = write at single drive speeds, approximately 100MB/s (no write benefit to multiple drives?)
Setup 2
Rather than put that 4TB of data onto a separate striped vdev, I could lump it all together and store it on a 12 drive RAIDZ2 in the same pool.
2 drives of redundancy data (so better than a dual striped array by one disk)
Max read throughput = ????
Max write throughput= ????
Some misc info...
The 4tb data is mainly data files and audio data, its all backed up to offsite storage via Crashplan
The 12 * 4TB is video files and will be backed up to an older hardware raid6 system on site for the time being.
would appreciate any guidance or pointers to theoretical speeds, thanks in adv
Ian
