The interest in deploying solid state storage is still building, but there are already a handful of ways to introduce solid state technology into existing IT infrastructures:
• As a PCIe solid state memory card installed in a server with software to manage caching and sharing of data.
• As a caching appliance to accelerate certain applications.
• As an extended cache added to a traditional disk storage system.
• As a tier in a traditional storage system using solid state drives (SSDs) along with spinning disk drives. There may also be a traditional storage system with only SSDs installed.
• As a storage system specifically designed for all solid state, typically with solid state modules and a custom controller to manage the memory.
Solid state technology will continue to evolve over time as the value from performance acceleration and other benefits such as reducing power, space and cooling while increasing reliability justify further development. IT customers who purchase solid state storage systems need to realize that the systems are an investment that not only provide immediate benefits but have a long-term positive impact as well. The investment may be optimized with operational changes and infrastructure improvements. The selection of product and vendor for this momentous long-term decision must be carefully considered.
Some of the considerations include:
• Will the vendor’s system design be operationally the same if the underlying solid state technology is updated with the latest developments? Today’s systems are primarily NAND flash solid state memory, which will continue for years with improvements in durability and cost but will inevitably be replaced with another technology with greater advantages. IT should look at the investment to ensure that it will continue if the vendor can transparently introduce new solid state technology. Vendors that only focus on flash may not have considered the long-term investment.
• Does the solid state system fit seamlessly into the overall management environment? Simply put, does the management of the system work with the vendor’s other management tools, including top-level orchestration? This could require an exception now, but may change with further product development or with the next generation.
• Is the storage network attachment capable of meeting the performance latency and bandwidth the solid state storage system can deliver? Exploiting the high performance characteristic requires low latency, which can be achieved with direct connection or though storage networks. You need to consider network performance and expandability for solid state storage.
Deployment of solid state storage systems will become more pervasive and benefit from the continuation of investments made. It is important to look at the long-term when making a strategic decision about selection of a product and vendor.
(Randy Kerns is Senior Strategist at Evaluator Group, an IT analyst firm).