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SSD

Do Thunderbolt hubs impair performance?

Do fast Thunderbolt SSDs slow down when connected via a Thunderbolt hub? How fast are they when reading at the same time? Does connecting a display affect them?

January 26, 2023 Macs, Technology

Estimating the remaining life of a Mac’s internal SSD

Making sense of the SMART indicators for NVMe SSDs, including all recent models fitted by Apple to Macs.

December 13, 2022 Macs, Technology

How to estimate an SSD’s working life

The life of an SSD should be more predictable than a hard disk. All you need is its TBW, and the total amount of data written to it so far.

December 5, 2022 Macs, Technology

Tracking swap space: is it wearing out your SSD?

In extreme cases, excessive use of swap space on an internal SSD could lead to its premature death, and the end of life for that Mac. How could you assess that?

December 2, 2022 Macs, Technology

Disk performance of lightweight macOS VMs on Apple silicon

Writing to the Data volume in a VM is dismally slow. Is using shared storage any quicker? What happens when you copy a VM to an external SSD, or to another Mac?

December 1, 2022 Macs, Technology

Which external disk?

Overall summary of a year’s testing external hard disks and SSDs ranging in cost from $50 to more than $200 per TB. Which is best?

November 23, 2022 Macs, Technology

Which are more reliable: hard disks or SSDs?

Two reasons for paying more and using SSDs are that they’re faster and more reliable. Data on failure and reliability don’t appear as clear as the ads, though.

June 2, 2022 Macs, Technology

Does a faster external SSD help M1 Macs boot faster?

With the right enclosure, a Samsung 980 PRO NVMe SSD delivers transfer speeds of around 2.8 GB/s. Does that make booting from it any faster, compared with an SSD at half the speed?

May 25, 2022 Macs, Technology

How much free space does an APFS disk need?

It depends whether you’re going to boot macOS from it, on the space required for snapshots, and how large they could become. And there’s more.

May 18, 2022 Macs, Technology

Should you continue using HFS+?

Which is faster with a hard disk: using APFS or sticking with HFS+? Are there any differences in their performance on SSDs?

May 16, 2022 Macs, Technology

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