22 Replies Latest reply on May 9, 2013 7:32 AM by Dthi89

    Which disk out of 2 should I use?

    Dthi89

      Hello

       

      Thanks for PS C6, and for ACC.

       

      I have:

       

      1

      Intel 520 Cherry Ville 120GB SSD Drive

       

      2

      2TB SATA Hard Drive

       

       

      #1 is for booting up and OS, #2 for files. Which one should I use for Scratch Disks?

       

      Thank you

        • 1. Re: Which disk out of 2 should I use?
          Curt Y Level 7

          The 120gb drive is too small to use.  Will have to use other.  Hope it is internal.

           

          Can expect to use 50 to 150 gb for scratch, depending on how big of files, layers, effects, etc.

          1 person found this helpful
          • 2. Re: Which disk out of 2 should I use?
            Dthi89 Level 1

            Thanks for your reply Curt. Yes, it's internal. BUS 1.

             

            I should assign scratch exclusively to SATA then?

            • 3. Re: Which disk out of 2 should I use?
              Curt Y Level 7

              Yes, also put the Bridge cache on SATA also.

              1 person found this helpful
              • 4. Re: Which disk out of 2 should I use?
                Dthi89 Level 1

                OK, sure - I'll add Adobe Bridge to SATA as well.

                 

                Thanks again Curt.

                 

                Dylan

                • 5. Re: Which disk out of 2 should I use?
                  Noel Carboni Level 8

                  How much RAM do you have?

                   

                  You should consider getting a second internal SSD for use for Photoshop scratch.  Or, if you're willing to go through the system reconfiguration necessary, making a RAID 0 array of the two of them, then using the resultant larger array for everything (OS, applications, swap, scratch).

                   

                  The performance of Photoshop, when it exceeds your RAM capacity and requires the use of lots of scratch space, is a good bit better when the scratch space is put on SSD storage.

                   

                  I use a 4 drive SSD array for everything except very low access file storage and backup myself, so I have first hand experience on how well it works.

                   

                  -Noel

                  • 6. Re: Which disk out of 2 should I use?
                    Dthi89 Level 1

                    Hi Noel, thanks or your suggestion. I think you're referring to mergin both drives into one.

                     

                    All things performance and hardware are becoming more familiar to me over time as I'm varying my work-output.

                     

                    I sort of grasp what you're telling me, and I will discuss your recommenation with a colleague/OEM

                     

                    16GB RAM, Mem Usage in PSCS6 Ex. set to 60% 8783 MB.

                     

                    Kind regards

                     

                    Dylan

                    • 7. Re: Which disk out of 2 should I use?
                      Dthi89 Level 1

                      Hi

                       

                      Just to follow up, yes - 16GB RAM. The 2TB SATA Hard Drive I have is an SSD, right. You say, have 1 SSD dedicated to scratch? In which case I might use an external HD drive for files, then?

                      • 8. Re: Which disk out of 2 should I use?
                        Curt Y Level 7

                        Are you saying the 2T SATA HD is really a 2T SSD?  That would be impressive but would recheck that. 

                         

                        If you have a large SSD there is no need to have seperate smaller SSD's.  Believe Noel was suggesting a second SSD for scratch disk and the large SATA for files. 

                        • 9. Re: Which disk out of 2 should I use?
                          Dthi89 Level 1

                          Sorry, the 2T is HDD, NOT SSD! OK, so use the HDD for scratch, and I will use an external HD for files/backup. I'm just trying to establish a normal working method, aside from the particulars of personal preferences, as per Noel's example.

                           

                          Thanks again

                           

                          Dylan

                          • 10. Re: Which disk out of 2 should I use?
                            Curt Y Level 7

                            You want to have a fast scratch disk, so that is why Noel suggested the SSD.  An internal is the next best option.  An external is a little slower so not as attractive.  Although the SATA3 and USB3 is almost as fast as an internal as I remember it.

                             

                            THe downside of a spinning disk is that it has one read/write head.  So it can only do one task at a time.  If you are trying to write to scratch and read another program at the same time it slows things down.  That is why if you are a heavy user a dedicated scratch disk is recommended.

                            • 11. Re: Which disk out of 2 should I use?
                              Curt Y Level 7

                              Should add with SSD since there are no write heads you do not have the seek problem.

                              • 12. Re: Which disk out of 2 should I use?
                                Dthi89 Level 1

                                Hi Curt

                                 

                                OK, sure - a SSD would be perfect for scratch, since it's faster, hence why it used for application and OS loading. I understand more now. Thanks.

                                 

                                Until then, .... Quite right with read/write, hence using 2TB HDD for scratch. In terms of effeciency, and in terms of use, the 120GB SSD is for applications & OS, the 2TB HDD is for PS scratch disc. The external HD wouldn't be used for scratch, just backup. The ideal (and simply put) setup would be: SSD for App/OS, Dedicated SSD for scratch, and a HDD or files/back up, correct?

                                 

                                Not sure I understand: Should add with SSD since there are no write heads you do not have the seek problem.

                                • 13. Re: Which disk out of 2 should I use?
                                  Curt Y Level 7

                                  Seek problem is technical term for the head.  It has to seek a location to read or write so this takes time as a physical movement.  Just like a phonograph arm playing a record.

                                   

                                  With a SSD is is eletronic read write with flash memory, hence no seek time.

                                  • 14. Re: Which disk out of 2 should I use?
                                    Dthi89 Level 1

                                    Ah, OK, thanks. Can you confirm the above setup I've highlight Curt, please?

                                    • 15. Re: Which disk out of 2 should I use?
                                      Dthi89 Level 1

                                      Hi, again

                                       

                                      Sorry, there seems to be some confusion, my fault/making.

                                       

                                      16GB RAM

                                      120GB SSD

                                      2TB HDD

                                       

                                      Given this, which Drive should I use for scratch?

                                       

                                       

                                      Should I invest in a extra SSD drive and dedicate it to scratch (be it internal or SATA3 USB3 external)?

                                      • 16. Re: Which disk out of 2 should I use?
                                        Curt Y Level 7

                                        Dthi89 wrote:

                                         

                                        Hi, again

                                         

                                        Sorry, there seems to be some confusion, my fault/making.

                                         

                                        16GB RAM

                                        120GB SSD

                                        2TB HDD

                                         

                                        Given this, which Drive should I use for scratch?

                                         

                                         

                                        Should I invest in a extra SSD drive and dedicate it to scratch (be it internal or SATA3 USB3 external)?

                                        With your current setup there is only one option, the 2T HDD.  120g SSD is too small for programs an scratch.  RAM to small.  Need at least 50 g of scratch.

                                         

                                        Up to you if you want to buy another 120g SSD or another drive for scratch.  Not necessary in my opinion unless you are really a high end user.

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                                        • 17. Re: Which disk out of 2 should I use?
                                          Dthi89 Level 1

                                          Using for web design/graphics, and web dev - in addition, some print design, hi-res digital photo editing, and short credit sequences (A/V), short edited HD video, FL Studio, some low res 3D, not high end at all in repect of the latter parts. As I progress, of course, I'll up-scale my system. But the stuff I'm learning now about higher-ends are all part of the learning process, so it's all good.

                                           

                                          But, can never have enough HDs, for sure.

                                          • 18. Re: Which disk out of 2 should I use?
                                            Dthi89 Level 1

                                            Hi

                                             

                                            I'm sorry or drawing this thread out, on and on - but, given that I'm not doing high end, with max PSD being 100MB typically, would it be better to use the SSD for scratch until I get a 2nd dedicated SSD?

                                            • 19. Re: Which disk out of 2 should I use?
                                              PhotoRoy1 Level 1

                                              With 16 GB of RAM and typical file size of 100MB I don't think you need scratch that often.

                                              • 20. Re: Which disk out of 2 should I use?
                                                Curt Y Level 7

                                                From what I have seen in posts 50 gigs of scratch will work, but you are pushing it with larger images.  It all depends on how many history states, how many layers, how many effects you use.  Some posts I have seen the scratch needs zooms up near 200 gigs for one image.  Remember if you use a filter on a 100 m file now the file is 200 meg and so on.

                                                 

                                                I am getting the idea you are needlesly worrying about it.  Use the SATA and if it whirrs a lot doing its thing while you wait, then get another SSD.

                                                 

                                                If all the programs on the C drive take up less than 50 gig you can use the SSD.  Normally you want 10-20% free space on a spinning hard drive, but no one has said if the same applies to a SSD, so will assume it does.  With a 120 g SSD you sho only use about 100 gig.  Does not leave much room.  If you had purchased a 560g SSD you would be fine.

                                                1 person found this helpful
                                                • 21. Re: Which disk out of 2 should I use?
                                                  Noel Carboni Level 8

                                                  With 16 GB on tap you can generally raise your Photoshop RAM limit to 85% or 90%.

                                                   

                                                  -Noel

                                                  • 22. Re: Which disk out of 2 should I use?
                                                    Dthi89 Level 1

                                                    Yes, currently 70GB free on SSD. Thank you for your help everyone...

                                                     

                                                    As I say, no high end poster printing for example, just portfolio work in terms of high-res output. 20 history states but a lot of file versioning in PS. 16GB RAM is adequate in most cases. OK, got the idea, here. Will add an additional SSD internally in due course. Thanks everyone.