Thinking About Scalable Persistent Memory

Ned Otter has a good post thinking about Scalable Persistent Memory:

There were other potential issues when using Persistent Memory, detailed in this blog post. But what’s not covered in that post is the fact that deploying NVIDMM-N reduced the memory speed and/or capacity, because they are not compatible with LRDIMM. This causes you to use RDIMM, which reduces capacity, and because NVDIMM-N operates at a slower speed than RDIMM, it also affects total memory speed.

HP has since released Gen10 servers, and they have changed the landscape for those seeking reduced latency by storing larger data sets in memory. For one thing, they raise the bar for what’s now referred to as Scalable Persistent Memory, with a total server capacity of 1TB. To be clear, NVDIMM-N is not used in this configuration. Instead, regular DIMMs are used, and they are persisted to flash via a power source (this was also the case for NVDIMM-N, but both the flash, DIMM, and power source were located on the NVDIMM-N).

Check it out.  I’m happy that things are improving, but it sounds like this won’t be a panacea.

Related Posts

Monitoring Performance Of Natively Compiled Stored Procedures

Jos de Bruijn announces a feature coming to the next version of SQL Server: We just added new database-scoped configuration options that will help with monitoring performance of natively compiled stored procedures. The new options XTP_PROCEDURE_EXECUTION_STATISTICS and XTP_QUERY_EXECUTION_STATISTICS are available now in Azure SQL Database, and will be available in the next major release of SQL Server. These options […]

Read More

Using Hive: Tiered Or Decoupled Storage?

Brandon Wilson and Gopal Vijayaraghavan compare a series of Hive queries against EC2 instances with persistent storage and S3: There are advantages and disadvantages to each approach. The tiered approach has the most flexibility for an operator to tune the performance of the cluster while trading off size of the hot data zone for better […]

Read More

Categories

December 2017
MTWTFSS
« Nov Jan »
 123
45678910
11121314151617
18192021222324
25262728293031