Hi Daniel,

I need to digest your email below - it sounds a good idea on having two drives 
raided together, but in the meantime I took note of the message and it says my 
"Startup disk is full.   To make more space available on your startup disk, 
delete some files.”
Why does this message  not appear when I first start up ?  It usually happens 
after about an hour or two of working.  The files I normally generate are word 
or excel, so would not have thought not huge amounts of space are being eaten 
up.   
Perhaps I need to do a clean install, which I was trying to hold off to later 
in the year.  Or maybe transfer some files onto another HD.  I actually thought 
it was the cache or something else which was eating up the space.   

I must apologise Susan, I initially said it was memory and not start up disk 
space.  

Cheers
Jewels

> On 28 Feb 2019, at 3:51 PM, Daniel Kerr <wa...@macwizardry.com.au> wrote:
> 
> Hi Jewels
> 
> As Susan has mentioned, is the error message your’e getting saying “you’re 
> out of memory” or  “your startup disk is getting low on space”.
> As both are different things.
> 
> 
> The MacPro has 4 hard drive bays, so you do have the option to “increase” 
> storage if it needs it. It’s also possible to a) use the SSD for the boot 
> up/system, but then use a standard Hard Drive for storage or b) create a 
> “Fusion Drive” (Core Storage drive) to combine both an SSD and a normal Hard 
> Drive together, to give speed plus storage. (e.g. using an SSD plus say a 
> 2-3TB drive and make it into one drive which shows as 2.25TB. Or even c) have 
> two drives raided together in various ways.
> So plenty of options there.
> 
> If however, it’s relating to low memory, then just adding more RAM/memory to 
> the machine, can also help with more Apps running as well. These days you 
> want to have at least 8GB RAM minimum I find, as the OS (Operating System) 
> wants to use more also. So having at least 8GB or 16GB is preferable.
> 
> You should be able to look under About this Mac in the Apple menu to see how 
> much RAM is there.
> You can also see what is being used (and when and where) by going into 
> Applications - Utilities and opening Activity Monitor. Click on Memory and 
> have it to the side as you’re doing things. You’ll then see Apps are using a 
> lot and if it’s going over what it has built in.
> 
> Without going into a lot of details, the  new system will “never” (in theory) 
> run out of memory, as it borrows it from the HDD (or SSD), to keep the 
> computer going,…but this does tend to slow things down. So rather then doing 
> things that way, it’s always better to have more built in memory then using 
> it that way and running out of memory.
> 
> Hope that all helps.
> Kind regards
> Daniel
> 
>  Sent from my iPhone XS 
> 
> ---
> Daniel Kerr
> MacWizardry
> 
> Phone: 0414 795 960
> Email: <dan...@macwizardry.com.au>
> Web:   <http://www.macwizardry.com.au>
> 
> 
> **For everything Apple**
> 
> NOTE: Any information provided in this email may be my personal opinion and 
> as such should be taken accordingly, and may not be the views of MacWizardry. 
> Any information provided does not offer or warrant any form of warranty or 
> accept liability. It would be appreciated that if any information in this 
> email is to be disseminated, distributed or copied, that permission by the 
> author be requested. 
> 
>> On 28 Feb 2019, at 3:30 pm, Susan Hastings <susanhasti...@mac.com> wrote:
>> 
>> Hi Jewels, 256gb should be fine to run your applications if you don’t store 
>> a lot of music and photos on the HD. It’s puzzling that you would be having 
>> problems with the HD filling up.
>> 
>> I have a MacBook with 128gb that doesn’t have any problems with running out 
>> of memory even using Office 365, photoshop and Lightroom. All of my photos 
>> and documents are kept on an external drive, except maybe for a few files I 
>> may be working on. That means my iPhoto library and iTunes library are not 
>> on the internal HD.
>> 
>> The mysterious way your HD fills up is NOT normal, providing that like me 
>> you don’t keep large iPhoto and iTunes libraries on the main HD. Even so, a 
>> 246GB HD is quite a lot of space.
>> 
>> Closing down applications does not increase HD space. You are speaking about 
>> memory - are you talking about your RAM or HD?
>> 
>> Cheers, Susan.
>> 
>> 
>> 
>> Sent from my iPad
>> 
>>> On 28 Feb 2019, at 3:10 pm, Julie Bedford <jew...@iinet.net.au> wrote:
>>> 
>>> Hi Susan
>>> 
>>> Apologies, I should have said - it’s only a 256 gb - I have got a 1TB SSD 
>>> which I’ve not put in as yet, as still trying to decide on whether to 
>>> rebuild the MacPro - waiting for Apple to give specs on their new MacPro 
>>> later on in the year.  However, I suspect one will be
>>> limited in upgrading the new model as like the previous recent models.  I 
>>> use various applications, but when I get low, I close the apps I’m not 
>>> using, but still doesn’t make a difference. 
>>> 
>>> This didn’t happen previously, it is only really in the last year or so.  
>>> 
>>> Cheers
>>> Jewels
>>> 
>>>> On 28 Feb 2019, at 2:06 PM, Susan Hastings <susanhasti...@mac.com> wrote:
>>>> 
>>>> Hi Julie, it would help to know the size of your HD and how much of it you 
>>>> are using for your applications and documents. Click on your HD icon and 
>>>> go to ‘get info’ which will give you that information. Then post it here 
>>>> so that people can offer practical solutions.
>>>> 
>>>> At least a tenth of your HD space needs to be free to be able to run your 
>>>> applications. You can keep stuff such as your photos and documents on an 
>>>> external HD to free up space on your main HD.
>>>> 
>>>> Cheers, Susan.
>>>> 
>>>> 
>>>> 
>>>> Sent from my iPad
>>>> 
>>>>> On 28 Feb 2019, at 1:49 pm, Julie Bedford <jew...@iinet.net.au> wrote:
>>>>> 
>>>>> 
>>>>> Hi all,
>>>>> 
>>>>> Wondering if anyone has any ideas.  I have a Mac Pro 2012 which has a 
>>>>> SSD. (El Capitan)
>>>>> 
>>>>> Over the last year, I keep getting a box appear saying I’m almost out of 
>>>>> memory.  I can release some by using Clean My Mac2 but it is not
>>>>> until I do a restart will I get back all the memory available (can be 
>>>>> around 4 gb)  I have watched the Mac while doing nothing and see the
>>>>> available HD space diminish.
>>>>> 
>>>>> It can be a bit of a pain having to do a restart in the middle of doing 
>>>>> something just to regain the HD space. 
>>>>> 
>>>>> Thanks
>>>>> 
>>>>> Jewels
>>>>> 
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