Alan W. Smtih
Explorer
- Joined
- Aug 30, 2014
- Messages
- 54
I'm preparing to build my second FreeNAS box to hold my photo archive. A bigger, badder version of my original 6 drive machine. After researching these forums, I've decided to use 4TB WD Red drives. I've narrowed my configuration plans down to either:
Both of these configurations would produce 32 TB of storage.
I'm leaning toward the 11 drive RAIDZ3 configuration. (One less drive to buy, case shopping will be easier, fans won't have to work quite as hard...)
My question either configuration offers a performance benefit. Would there be a difference in speed when reading/writing, say, a thousand 30MB image files at a time over gigabit ethernet?
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Other background info if it matters:
The C2550D4I has twelve onboard SATA connections that the drives will be wired to. The controllers are:
- 11 drives in a single RAIDZ3 vdev (11 drives with 3 for parity), or
- 12 drives split into two RAIDZ2 vdevs (6 drives each with 2 for parity)
Both of these configurations would produce 32 TB of storage.
- (6 drives - 2 parity) × 4TB per drive × 2 vdevs = 32 TB available storage
- (11 drives - 3 parity) × 4TB per drives x 1 vdev = 32 TB available storage
I'm leaning toward the 11 drive RAIDZ3 configuration. (One less drive to buy, case shopping will be easier, fans won't have to work quite as hard...)
My question either configuration offers a performance benefit. Would there be a difference in speed when reading/writing, say, a thousand 30MB image files at a time over gigabit ethernet?
---
Other background info if it matters:
- Probable motherboard: ASRock C2550D4I Mini ITX Server Motherboard
- Likely 32GB of RAM (unless 64 would make a huge difference)
The C2550D4I has twelve onboard SATA connections that the drives will be wired to. The controllers are:
- Intel C2550: 2 x SATA3 6.0Gbps
- Intel C2550: 4 x SATA2 3.0Gbps
- Marvell SE9172: 2 x SATA3 6.0Gbps
- Marvell SE9230: 4 x SATA3 6.0Gbps