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Lloyd recommends 32GB RDIMM modules for most users (more expensive LRDIMMS are for 512GB or more).
HGST Ultrastar He8 Performance: RAID 1+0
RAID 1+0 is a “striped pair of mirrors”. The goal of RAID 1+0 is to double performance and capacity while allowing potentially more fault tolerance than RAID-5. Data is striped (RAID 0) over mirrored sets (RAID 1) of drives for fast redundancy.
RAID 1+0 requires four drives (or 6, 8, etc). With four drives, two mirrors are created of two drives each, and those two mirrors are then striped. This allows one drive from each mirror to fail, but failure of both drives of a mirrored pair fails the RAID.
RAID 1+0 sustained transfer speed
DiskTester run-sequential used to test peak speed of empty volume, freshly erased. Throughput figures are real-world figures through the OS X file system.
Performance is about what might be expected: about the speed of a 2-drive RAID-0 stripe.
Or iMac 5K or iMac Pro?
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System configuration for CPU, GPU, memory, SSD, backup, RAID, optimizing performance, workflow.
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Avoid costly mistakes in throwing money at the problem for less performance and/or buying the wrong machine for your own needs!
Remote screen sharing available for RAID, software configuration, etc.
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