![]() For more information about NVMe SMART over USB please check this article in our FAQ. This program gives you access to a complete report showing various aspects. SAT is shortened for SCSI to (S)ATA Translation, it is for SATA-drives, not NVMe/PCI-drives. DriveDx is a Mac tool for checking the built-in S.M.A.R.T. It looks like I will have to change my Samsung EVO 970 Plus to Sabrent Rocket quite soon (but in DriveDX everything is fine, only 23TB has been written and SMART is perfectly fine). Crucial X8 Portable SSD is NVMe-based SSD internally, so it is not compatible with SAT SMART Driver. You’ll see About this Mac change to System Information. Click the Apple icon in the upper-left corner (in the toolbar), then hold the Option key. The process to check your SSD health on your Mac is straightforward and takes about a minute. Write speed is 2700 MB/sec and read speed is 2069 MB/sec. Check Your SSD Health Using SMART Status System Reports. I also noticed that a write/read speed in macOS is also degraded! Now I have 2 APFS containers: one for Mojave 10.14.6 and another for Big Sure 11.1.Īnd time required to boot from OpenCore to login screen is doubled! ![]() 18:11:03.134051+0100 localhost kernel: (apfs) spaceman_datazone_init:442: disk2 allocation zone on dev 0 for allocations of 4 blocks starting at paddr 983040 18:11:03.134045+0100 localhost kernel: (apfs) spaceman_datazone_init:442: disk2 allocation zone on dev 0 for allocations of 3 blocks starting at paddr 1015808 18:11:03.134039+0100 localhost kernel: (apfs) spaceman_datazone_init:442: disk2 allocation zone on dev 0 for allocations of 2 blocks starting at paddr 1048576 70 is a significant difference for SMART. 18:11:03.134032+0100 localhost kernel: (apfs) spaceman_datazone_init:442: disk2 allocation zone on dev 0 for allocations of 1 blocks starting at paddr 1081344 While the least expensive TB shell I know for NVMe is the OWV Envoy Express TB3 which is 90.
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