I have the following spec vps
2 cpu cores
30gb OpenVZ SSD RAID-10
My question is does ssd make that much differance as im looking for a new vps and most ssd 1s are either over budget or not enough hdd space in my budget which is the only reason i want to find new one as current provider only allows full package upgrade and that would be as waste for me as everything but hdd space is fine.
SSD drives make a huge improvement and once you start messing around with one then you'll defiantly see the difference compared to a regular drive we use today. You will get much more time when browsing files or moving them around. I highly suggest you get one and if your a gamer get one and install your games on it.
If you do not need a large amount of storage SSD VPS's are starting to get cost effective as well, but if your storage requirements are high SAS drives should be good as long as the provider is not overselling to a point where it compromises with performance.
SSD definitely improves the performance and ofcourse very reliable. But I think it depends more on what you run on them. If you have a database extensive websites with large number of records under it or write a lot of media on the disk then SSDs can prove to be highly beneficial. But if you have a normal site with average size of database then even SAS would do a great job for you.
I can't say SSDs are more reliable than mechanical hard disks (personally, I had a couple of them fail on me irl, whereas I never had to resort to my backups on mechanical HDDs, due to how you could usually hear when they were about to go down the gutter).
However, the performance improvement is noticeable and high.
It depends on your application, too. If you read from the disk quite a bit, don't write to it all that much, go for SSD, it's pretty much made for you.
If you never really read from the disk, and pretty much anything in memory, you don't need it.
If you trash the disk, virtually writing over it ever day, a SSD won't last long.
Note: If you use an old kernel (< 3.7) and plan to use software RAID, you do NOT have TRIM support. Just as you get pre-3.7 people saying that it doesn't matter, you'll get heaps of post-3.7 people telling you how important TRIM is . But since it's a VPS, you don't have much influence on it anyway.
Just one note about SSD drives: They seem to be more prone to HW failure than SATA or SAS drives, so if you're going to utilize a system with SSD, you need to make sure that it is definitely in a RAID10 configuration (4 drives MINIMUM).
Although rare, RAID failures as a result of the "0" or "1" pairs failing can happen, so make sure you ALSO have current backups, especially if your site is database driven.
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I'm in doubt ssd cached hdd can make much difference for VPS.
Please share your experience if possible.
Personally it didn't do a lot for us. Maybe if you throw a ton of cache at it you'll end up benefiting, but if you're doing even just a 128GB ssd infront of a few TB of space? Doesn't do much.
It's case-by-case since it depends entirely on your userbase. If you have a couple users that slam the disks with a ton of reads (busy SQL with heavy SELECTs for instance)? then it can take a good load off it.
If you get a normal VPS node work load, though, you'll be up a creek.
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I would prefer to go with SSD. You will find it bit costly but it will provide you fast performance than normal drive.
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