4 ms·
I guess the real questions is are SSDs good enough to replace data that now sits in RAM? For example, Google keeps their entire search index in RAM. Would they
by andr 18y ago
I guess the real questions is are SSDs good enough to replace data that now sits in RAM? For example, Google keeps their entire search index in RAM. Would they be better off keeping it in SSDs?
- wheels 18y agoNot even close. The bandwidths of RAM vs. SSDs differ by a couple orders of magnitude.
- krschultz 18y agoEspecially with the Intel X-25 at around $4.50 per GB and DDR2 running at $10 per GB - there just isn't much of a cost savings for completely disparate performance.
- wmf 18y agoWhen you calculate the price of RAM, consider the slots as well. Putting a TB of RAM in a server requires more than just DIMMs.
- bayareaguy 18y agoBut as the paper linked by the article[1] points out, a single server can hold much more data in SSD storage then in onboard RAM. For ordinary databases, one sweet spot for SSDs is for index tablespaces. [1] - http://research.microsoft.com/en-us/um/people/antr/ms/ssd.pdf http://research.microsoft.com/en-us/um/people/antr/ms/ssd.pd...