SSD up for 4 hours was written 2.4 TB data. How come?

[nkurtar]

I just got brand new 2019 i9 Vega 48 iMac. After transfering 118GB file through migration assistant I checked SSD status. Its ok but 2.4 TB written I saw on DriveDx. System is up for 4 hours so how could I write 2.4 TB data onto my SSD?

 

[Juicy Box]

Indexing?

 

[nkurtar]

probably because I noticed mds-working was running with high CPU usage. I had to turn off spotlight search.
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Is it normal for spotlight to do indexing for 1 TB SSD as 2.4 TB?

 

[smirk]

I can't explain 2.4 TB, but some of that was likely when Apple installed macOS. Possibly some of it was when the factory tested the SSD on the assembly line (if that's a thing).

 

[priitv8]

probably because I noticed mds-working was running with high CPU usage. I had to turn off spotlight search.

You can and should turn it back on. After initial indexing of full disk it will not load CPU any more in the future. But Spotlight is extremely convenient to have.

Is it normal for spotlight to do indexing for 1 TB SSD as 2.4 TB?

Where did you get this number 2.4TB??

 

[smirk]

He probably pulled it from the SMART data...

 

[priitv8]

He probably pulled it from the SMART data...

Alright, the DriveDx is a name!
If that is a total cumulative write volume, your version could be accurate. Not something I would worry about, though.

 

[nkurtar]

You can and should turn it back on. After initial indexing of full disk it will not load CPU any more in the future. But Spotlight is extremely convenient to have.
Where did you get this number 2.4TB??

Thanks @priitv8 I turned it back on.

 

[throAU]

Maybe full disk encryption. how big is the SSD in terms of total size? if its a 2TB ssd, maybe the entire disk was written to for full disk encryption set up... which would mean you did 2TB right there... plus maybe a time machine local backup or two.... in that case 2.4 TB wouldn't be too far off base.

 

[nkurtar]

SSD is 1 TB. But no encryption. When I used migration assistant 118 GB were transferred from Time machine backup. That's all.

 

[Fishrrman]

What I do (and it's not for everyone):
- DISABLE Spotlight -- forever
- DON'T USE time machine -- forever
- DISABLE VM disk swapping -- forever

I also avoid apps such as Chrome.

Works for me.

 

[throAU]

What I do (and it's not for everyone):
- DISABLE Spotlight -- forever
- DON'T USE time machine -- forever
- DISABLE VM disk swapping -- forever

I also avoid apps such as Chrome.

Works for me.

I do none of these things and... works for me...

 

[nkurtar]

I forgot to say my iMac came with Mojave 10.14.4. I upgraded it to 10.14.6 before restoring from backup. This process might have written some data as well.