Before we begin, something needs to be clear: Although dual-ported NVMe drives are not yet cost effective, the architecture of Nimble Storage is NVMe-ready today. And always remember that in order to get good benefits from NVMe, one needs to implement it all the way from the client. Doing NVMe only at the array isn’t as effective.
The cardinal rule for enterprise storage systems is to never compromise when it comes to data integrity and resiliency. Everything else, while important, is secondary.
Many storage consumers are not aware of what data integrity mechanisms are available or which ones are necessary to meet their protection expectations and requirements. It doesn’t help that a lot of the technologies and the errors they prevent are rather esoteric. However, if you want a storage system that safely stores your data and always returns it correctly, no measure is too extreme.
I wanted to bring this crucial issue to light since I’m noticing several storage vendors being either cavalier about this or simply unaware.
I will explain why solutions that don’t offer some sort of automated, live SSD firmware update mechanism are potentially extremely risky propositions. Yes, this is another “vendor hat off, common sense hat on” type of post.
This topic is very near and dear to me, and is one of the big reasons I came over to Nimble Storage.
I’ve always believed that storage systems should behave gracefully and predictably under pressure. Automatically. Even under complex and difficult situations.
It sounds like a simple request and it makes a whole lot of sense, but very few storage systems out there actually behave this way. This creates business challenges and increases risk and OpEx.
I normally deal with different aspects of storage (arguably far more exciting) but I thought I would write something to provide some common sense perspective on the current state of 7-Mode to cDOT adoption.
I will tackle the following topics:
- cDOT vs 7-Mode capabilities
- Claims that not enough customers are moving to cDOT
- 7-Mode to cDOT transition is seen by some as difficult and expensive
- Some argue it might make sense to look at competitors and move to those instead
- What programs and tools are offered by NetApp to make transition easy and quick
- Migrating from competitors to cDOT