↝ OWC / MacSales.com... ↜
↝ diglloyd Deal Finder... ↜
Buy other stuff at Amazon.com...
Up to 128GB for 2019 iMac 5K!
Up to 64GB for 2015/2017 iMac 5K
Save nearly 50% over Apple pricing
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.
$719 SAVE $430 = 37.0% Apple 12.9" iPad Pro (Mid 2017, 512GB, Wi-Fi Only, Gold) in Electronics: iPads and Tablets
$5699 SAVE $600 = 9.0% Apple 15.4" MacBook Pro with Touch Bar (Mid 2018, Space Gray) in Computers: Apple Macs
$2500 SAVE $300 = 10.0% Apple 15.4" MacBook Pro with Touch Bar (Mid 2018, Space Gray) in Computers: Apple Macs
$1000 SAVE $500 = 33.0% Westone W80 Eight-Driver True-Fit Earphones with ALO Audio and M… in Electronics: Audio