That's evocative…
In Time Machine's folders, there is always an alias (I think it's an alias, not
a hard link) to the most recent backup, named something like Most Recent
Backup. I wonder if your Time Machine "client" is somehow tripping over this
and counting that backup twice.
> On Mar 7, 2018, at 11:42 AM, Dinse, Gregg (NIH/NIEHS) [C]
> wrote:
>
> No, I do not do mobile backups with Time Machine.
>
> When I first wrote about this odd behavior, there was an appearance of pairs
> of "simultaneous" backups through the day, but when I looked more recently,
> only the latest hourly backup had a duplicate entry. If this does not extend
> throughout the entire backup list, then I guess I won't worry about it,
> though I still find it curious.
>
> Thanks,
>
> Gregg
>
> On 03/06/2018, 12:01 AM, "Michael" wrote:
>
>
>On 2018-03-05, at 12:43 PM, Dinse, Gregg (NIH/NIEHS) [C]
> wrote:
>
>> That's a good idea. I just checked and, based on the names of the folders,
>> there appears to be only one per hour. So, this suggests that the listing
>> within the Time Machine app is reporting two backups per hour when in fact
>> only one is being performed (or at least only one is being kept in the usual
>> location).
>
>Do you have mobile backups?
>
>>
>> Gregg
>>
>> On 03/05/2018, 12:55 PM, "Macs R We" wrote:
>>
>> Why not examine the folder hierarchy on your backup drive and inspect the
>> individual folder names, which will tell you when each backup set was
>> actually taken. Then at least you will know which end of the process is
>> misbehaving.
>>
>>> On Mar 5, 2018, at 9:26 AM, Dinse, Gregg (NIH/NIEHS) [C]
>>> wrote:
>>>
>>> Hi,
>>>
>>> I am running MacOSX 10.12.6 on a mid-2010 Mac Pro tower. I just upgraded
>>> from Yosemite to Sierra, so that may be related.
>>>
>>> I installed a "new" hard drive and dedicated it to Time Machine. It's only
>>> been running for about a day. I opened the Time Machine app today and, as
>>> usual, there are the tick marks along the right side of the screen that
>>> show when the various backups were performed (when the mouse hovers over a
>>> given tick mark). Ideally the backups are about an hour apart. In my
>>> case, there are pairs of tick marks with the same time listed. That is,
>>> the last two tick marks show exactly the same time, the next two tick marks
>>> also show the exact same time (though an hour earlier), and so on. I don't
>>> know if two backups are being performed each hour, or if the listing is
>>> just messed up. Has anyone seen this? Does anyone know how to fix it? Is
>>> there some preference file somewhere that is messed up?
>>>
>>> Thanks in advance for any help you can give me,
>>>
>>> Gregg
>>
>>
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