SSD for the Scratch, Cache and swap file?

Certainly, startup disk and RAID3 9-drive (7K 3000) the map of Areca-16. HDDs but... I was wondering, as I refine my construction, on the use of SSDS Strath, Cache and the pagefile.

It seems to me that constant random access to these files (small for most), could be somewhat competing for overall throughput (they have been configured on the RAID3 alongside media and project). In an ideal configuration, it would be a practical or advantageous to have 2 x SATA3 SSDs RAID0 for Cache, the Scratch and the pagefile? (and whatever else reconstructible temporary structures). In addition, in order to move the traffic far form the Areaca PCIe lanes, would it be more effective to RAID0 on SATA3s to the mobo? What would be the ideal size for these disks (min and max)?  2 x 60GB would do? Or 2x120GB? More?

I have also heard that, because of the nature of the scratch and cache, it would be better to have them on two separate drives? Or is it just an urban legend?

Frederic,

Bays of drive and the system configuration questions are good, but if I or someone had to answer us would be influenced by our own test files, projects, we have worked on, controller CPU, RAM, the card (or the lack of) and much more.

Given that what you're building has several similarities to mine, I'll share some of my own conclusions. To the topic specific answers like "how many disks in a RAID before it's inconsequential", it depends on so many things you should probably stop asking questions like this, because it may depend on certain things - CODEC, number of layers, transitions, filters, etc..

Things I'll comment based on similarities between the system you are creating and mine (X 58, 6-core CPU, 24 GB of RAM, controller Areca w / large cache (2 GB or more)):

1 move the pagefile seems really make a big difference on my system. So therefore, I keep in my table of OS/programs.

2. faster I ran used two large paintings with the projects, the media and all the files "scratch" on a table and "hide media" and released on the second. While the difference was not huge, the fastest result for PPBM5 comparative analysis was achieved but put 'media cache DB' on my OS/programs, which use SSDS.

So, how do proceed you?

1. load your operating system and programs on your disk boot or start table.

2. set up your Areca and drives in RAID 0, load some concrete projects similar to what you'll be using this system for, and test. Run PPBM5 too, it's a very useful common denominator that can be used to modify your own system and do it before / after comparison of the changes you are trying. IMO, a drive of 9 or 10 RAID 3 or 5 (or 6 besides) works well enough for everything. [Readers here who have a big RAID 0 out of their motherboard, I don't know if this is true for you or not, my test was done with all the great paintings hanging on a controller from Areca]

3. for answering your question about "Hard drives how much you" on your own system and with your own projects, simply repeat step #2 using a small RAID 0 array. Latest Areca SAS RAID controllers so fast, that I would say that you can count on very similar performance with a RAID 0 array with one less than road when you build the dos system to desired PARITY RAID; with the exception of RAID 6, of course, who would actually perform '2 disks' more small.

4 configure your final bar selected with parity, load your projects and you're done!

Another way, you can go forward? (Less time, less optimized, version case potentially filled with several discs, heat and energy than the 'optimal' generation) Note that I tested with a few large RAID 0 arrays that will be in my final build, and I use these disks for the storage of off-site backup.

1 build your big array with PARITY from the outset.

2. start to use the system and if it works well for you, you are finished.

As for RAID 3, 5, 30 and more, I use my table of data for editing more video, so go with RAID 5 was a simple choice for me. That being said, it seems to me that in my system (using a large cache ARECA controller and drives of 1 TB 7200 32 MB cache) a player "a less" RAID 0 seems to work only about the same as a RAID 5, so I don't think that the ineffectiveness of the RAID 5 or RAID 3 for large files (aka video editing) may be noticeable.

Kind regards

Jim

Tags: Premiere

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