What is Effect of SSD endurance limit (lifetime) on SSD performance?

Hi Experts,

I am planning to use Samsung 850 Pro 500 GB / 1 TB SSD drive for lab virtualization to run virtual machines explicitly
This SSD have endurance limit of 300 TBW (Terabytes written) according to its specification.
My regular usage would be copy / delete 150GB of data daily approximately on SSD
If I am considered useful SSD life, I can write 150GB of data every day for almost 2000 days (6.5 years) before reaching 300TB limit

As I will write 150GB of data daily, SSD lifetime will be getting decreased gradually


How my SSD performance will be after 1 OR 2 years (365 days / 730 days)?


Do I get same performance as day 1st on SSD over time (after 1 / 2 / 3 years / until end of life)?


Does SSD capacity will get decreased over time?
The reason behind I ask this question here because I don't find satisfactory answer on blogs / google anywhere?

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TemodyPickalbatros, IT ManagerCommented:
Very interesting discussing

1- Due your daily working with 150 GB sure performance will decrease after 1 Years 80%
2- sure not same performance after 1 / 2 / 3 years 80 % 70 % 60 %
3- I don't think the capacity will decreased over time "i have 240 SSD form OCZ bought from 3 Years Same capacity "

the point here is even the decrease of performance after 1 or 3 year There is no comparison between the SSD and non SSD the SSD will still faster than normal hdd after 5 year by 5 time at least
1. The strong performance of the SSD will decrease a lot within only a few months of running with a random read and write workload.
2. No, not at all.
3. Yes, when you reach the point where all the write-cycles are used on the drive, it will become read-only and can no longer be written to. This would mean losing all it's capacity at a certain point.
I would not worry about what you read elsewhere about lost capacity.
Test your SSD drive's performance yearly with AS SSD Benchmark (software details below)

Suggested reading:
"The Myth of SSD Performance Degradation"

AS SSD Benchmark can determine your SSD drive's performance.

Download link at techspot.com

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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
I've discussed this at length with many Microsoft Top Professionals "at the bar whilst having drinks"

We still have Generation 1 SSDs in use every day, in labs, 24/7/365 in use with Windows 7/Windows 8.0, and at present we have seen now performance degradation issues.

This is also an interesting tool to download provides lots of statistics, and also an End of Life.... and if the End of Life is 19 Dec 2024, I'm not going to worry about it, other devices in the PC will have been replaced or failed by then!


Lifetime 19 Dec 2024
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TemodyPickalbatros, IT ManagerCommented:
As Andrew Hancock say SSDlifepro very nice program ;)
MaheshArchitectAuthor Commented:
Thanks guys

Apologies for late response

Understood from comments that performance will get decreased over time / usage.

Trying to figure out approximately how many virtual machines I can run concurrently if I get 512 GB (Samsung 850 Pro) consumer SSD drive?
Do I need to get server class SSD such as Samsung 845 Pro / Intel S3610 (400 GB)

Is there any major concerns if I wanted to run multiple lab VMs on single SSD (8 VMs approximately - DC, Exchange, clients, file server and on)
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
other than no resilience, if you use a single drive should it fail.

If you need more IOPS increase the number of SSDs.

Depends on the workload of those VMs, but if it's a Lab, for test, you should be fine.
MaheshArchitectAuthor Commented:
Thank You
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