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I am planning on buying a new NAS (QNAP TS-453 Pro) for my Home Office. The NAS has 4 HDD bays and supports SSD Caching. Hence, I was wondering which setup would probably be faster in terms of write performance:
3x4TB in RAID 5 + 1 SSD (512GB - 1TB) as cache or 4x4TB in RAID 10
Typical tasks would be backups on iSCSI targets and file transfers to network shares. The max number of clients performing write operations will be 3-4.
Both proposed setups would have 8TB of available storage, with the RAID5 + SSD solution being a bit more expensive.
Is it possible to say which setup will be theoretically faster or is trying it the only option to determine the difference?