Penguin x8dtn, 24 1tb disks
Can find anything about this setup. Do you have specs/a link ?
| 2. What type of disks
Definitely not optimal for the amount of files or the access patterns you describe.
|3. If using a controller based array, what you optimized for sequential or random operation.|
Sounds like it should be random optimized, but depends on the array or RAID controller and its capabilities whether or not this a selectable.
| 4. Will you mirror on-host or using hardware RAID
controller based raid 10. six disks per raid set
Seems like a reasonable choice.
|4. What is your storage block size.|
|5. What is the average size of your writes|
|dunno, guess is a few meg. No more than 16m. These are email attachments|
That is the size of the objects not the size of the writes. iostats for the file systems would be good here.
| 6. What is the breakdown of reads/writes
This might be essential information, depends on the pattern, but caching correctly might improve performance drastically.
|9. How many files per directory do you have ( files includes sub-directories) in the largest directory.|
This is in all probability your main bottleneck, more file systems or directories with fewer files could improve this.