Inspiring

Question

Optimal choice for scratch disk

Forum|Forum|9 years ago
January 11, 2017
4 replies
4397 views

I’m trying to determine how to optimize my scratch disks. I have a Dell 7710 mobile workstation with two internal drives, both 256GB M.2 PCIe NVMe High Performance SSDs. On one (C:), I have the OS and 99GB of free space. On the other (D:), I have data and 52.1GB of free space. I have them set up in that order (C:=scratch disk 1, D:=scratch disk 2). I realize that it’s best not to need a scratch disk at all, but, given that I do need them, my thought is that, with 99GB “free” (all not really free), the OS disk is the best choice as disk 1. However, I have also read that the OS disk is not a good choice for a scratch disk. I’m assuming this is because other apps are likely to put out scratch files on the OS drive. Would I realize any appreciable benefit if I cleared the second internal drive and used it as an exclusive PS scratch disk 1?

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彦浩王75657412

Participant

HI ,I need help . where the place chang language

jbm007

Community Expert

He is your first problem.

You need to see how much room your pagefile.sys OS configuration is using.

I would take that configuration and manually configure it to span both your drives. Take what ever suggest as a proper size pagefile and split over both drives.

I Would then determine how much memory you are allowing PS to use and set that to 70% of your memory.

I would then take your 50% of the remaining free space on your C:\ and 50% remaining free space on your D:\ that is left after allowing for installed apps and pagefile usage and set that as available for use by PS for a scratch drive configuration.

Trevor.Dennis

Community Expert

Jim, the guys on the Premiere Pro Hardware forum, (who are my go to people for this sort of thing) say not to mess with your pagefile.sys. Least ways, not to move it off the boot drive. I think Windows sets it to match however much RAM you have installed. I wish Noel still posted here, as he would dot ever 'i' and cross every 't' and send us to sleep with the level of detail (Bless ).

Doc_Pit OK about the price of the workstation. I looked at the price options in the link I posted, and assumed it was definitive. I use an MSI GT70 ONE which I bought in 2013, and it still feels sharp and runs all the CC apps smoothly. I paid just short or NZ$4000 for it, but it was money well spent IMO.

Doc_PitAuthor

Inspiring

Jim,

Am I incorrect in assuming that as long as there is enough free space on the two designated scratch drives (and, as long as the drives themselves perform well) there should be no problem? I was puzzled as to whether there was any special reason that people sometimes counsel against offering PS space on the OS drive as scratch space vs. having a completely separate drive. Is the objective simply to insure that there is ENOUGH space on a high performing drive? I would think that as long as there is enough space, PS will just use what it needs. (Of course, I'm no expert, and what I "would think" is not necessarily right.)

Trevor,

Regarding the Dell 7710, here's the kicker. I had been using a Dell XPS, which I liked a lot. But it kept giving me more and more problems. Finally, and reluctantly, I decided to spring for a new computer, and I bought the 7710. I still use the XPS now and then. After I blew the money on the 7710, I never again had any problem with the XPS!

Trevor.Dennis

Community Expert

You say that _both_ drives are M.2? We live in interesting times regards storage performance, and M.2 drives are such a game changer, I am not sure that the old guide lines still apply. With that sort of drive performance I think there is no reason why you shouldn't leave the C:\ drive as your primary Scratch volume.

I checked out the Dell 7710 specs, and that is a serious workstation, but also a serious investment with start price of nearly $9000. You could build one heck of a desktop for that sort of money.

http://www.dell.com/nz/business/p/precision-m7710-workstation/pd

Doc_PitAuthor

Inspiring

Trevor, the 7710 starts at under $2000 (Precision 7710 Workstation Laptop | Dell ). My configuration was just over $4500, which is A LOT of $$$ for me. But I tend to keep a machine for a number of years. It doesn't have to be the latest and greatest as long as it does the job.

bellevue scott

Inspiring

Ideally the scratch disk should be a different drive than the drive that Photoshop is on, which is likely the OS drive. If you have two physical SSD drives, then put the PS program on one, and the scratch disk on another. That way the machine isn't trying to access the program and the scratch on the same drive. At least this is how I've always understood it.

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