On 08/18/2016 02:00 AM, Drew White wrote:
If you are after the best performance, use an SSD. If you have many guests and they are primarily parent/child, one thing you can do is get an SSD and an HDD.The following is more for desktops, rather than SSDs. This is something you will have to perform AFTER install onto the SSD, due to the fact that Qubes installer is not advanced enough to allow multi-drive install... 1. Boot into Linux Rescue mode from a DVD/CD 2. use fdisk or parted to create the HDD partitions. - I recommend 2 partitions, 1 for Qubes Logs folders and the other for AppVMs. 3. Set up the mount points and move the data for Qubes AppVMs and the Logs to the correct locations on the HDD. The setup I stated here is more beneficial because of the many writes to the SDD are not beneficial for it and wear it out quickly, so having the logs on an HDD makes more sense. The AppVMs that have their templates on the SSD are mainly reading the SSD, with very small amounts of data on the HDD.
SSDs, circa 2012 or later, wear out at a rate equal to or slower than HDDs. Even so, the older consumer grade SSDs used to fail largely because their controller chips overheated and croaked (especially Sandforce-based models, of which there were many).
This is something I queried them on, but they said it already did it, but I told them it didn't and told them everything how and why it DID NOT do it, and I have not heard anything further, nor have they changed the installer to allow for this. They may have it scheduled for the future, so I will leave it at that.
The main concern with Qubes drive performance is read operations, because starting apps can seem irritatingly slow when they come wrapped in an entire virtual machine. Its definitely about UX when booting and starting apps.
Qubes' write profile is still in the same ballpark as a typical desktop PC, even with multiple OS updates.... The only exception to this is the writing habits of qvm-backup, a separate issue which could be easily addressed.
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