external HDD not sleeping

J

jif


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27' iMac i5 (2010)  iPad2  iPhone5  iPhone 4S  Apple TV2  iP
hello...

I've got a 2TB WD 'my book' HDD connected to my 2011 I5 iMac as my time machine. I've also got a 1TB maxtor external HDD connected that I put other stuff on.

If I eject my HDD's and 'sleep' my mac, both external HDD's shut down then start up and shut down.. this process happens over and over...

I'm at the point I don't sleep the mac anymore as this cannot be good to the external HDD's

any idea why this is happening ?

Thanks
 
OP
J

jif


Joined
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Durham, UK
Your Mac's Specs
27' iMac i5 (2010)  iPad2  iPhone5  iPhone 4S  Apple TV2  iP
oooh pants, can no one help me with this one please .... it's doing me head in...
 
chscag

chscag

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2017 27" iMac, 10.5" iPad Pro, iPhone 8, iPhone 11, iPhone 12 Mini, Numerous iPods, Monterey
It's probably the firmware on the drives themselves that's causing this. I have the same iMac as you do and do not attach my external hard drives until I need them. That includes the one I use for Time Machine. I realize that not everyone can remember to attach their drive and make a backup, but I prefer to do it that way. Reduces the wear and tear on the drive and since I find making backups every 30 minutes ridiculous to begin with, attaching the drive when I wish to make a backup works for me.
 

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