Network, your next big storage problem!

data

Good post by Enrico Signoretti (thank you)

A few days ago I had an interesting chat with Andy Warfield at Coho Data and the topic of Network/Storage relationship came up several times. (Quick disclaimer: I’m currently doing some work for Coho)

In a couple of my latest articles (here and here) I talked about why many large IT organizations prefer PODs to other topologies for their datacenters but I totally forgot to talk about networking (I also have to admit that networking is not my field at all). So, this article could be the right follow-up for those posts.

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3D TLC NAND flash, your new SATA disk

2015

Good post by Luca Dell’Oca (thank you)

In 2014, in a presentation I’ve done, I’ve said to people that in 2-3 years new and cheaper flash memory would have become the standard solution for general purpose disk storage, thanks to a price per GB comparable with spinning disk. Seems that I was right after all.

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What is NVMe? And what does it mean for PCIe-SSD?

Good post by George Crump (thank you)

There are two constants in data center storage; the need for greater performance and the need for greater capacity. Flash based storage devices have become the go-to option to address the first challenge. But application owners and users quickly move from an initial euphoria with flash performance to demanding more. Since the flash NAND is essentially the constant in the equation, the surrounding infrastructure has to evolve to extract optimal performance from the technology. But achieving maximum performance often leads to proprietary architectures and designs. NVMe (Non Volatile Memory) is a new industry standard that enables data centers to realize full flash potential without compatibility headaches.

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NAND, DRAM, SAS/SCSI and SATA/AHCI: Not Dead, Yet

Post by Greg Schulz (thank you)

Manufacturers are coming out with new non-volatile memory (NVM) media like 3D XPoint. Does that mean that DRAM and other NVM media such as NAND flash are now dead?

Do new NVM storage access protocols such as NVM Express (NVMe) mean SCSI/SAS and AHCI/SATA are now dead?

My simple answer is no, they all have bright futures.

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Diablo Memory 1 Takes Memory Channel Flash To The Next Level

Good post by Stephen Foskett (thank you)

I’ve written about Diablo Technologies in the past, and they’re been part of Tech Field Day and my other events. The company’s products have always blurred the line between storage and memory, placing flash chips on memory modules and leveraging the fast, low-latency memory channel rather than the PCI or SATA/SAS bus. Memory 1 does one better, delivering a true flash DIMM that works in virtually any server.

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OCZ’s NVMe SSDs provide Lower Latency and Faster, more Consistent Performance

Post by George Crump (thank you)

When non-volatile flash memory-based solid-state drives (SSDs) were introduced, the protocol support included SAS/SATA. These interfaces were designed for hard disk drives (HDDs) and had more latency than was ideal for flash, but it made for easier integration of SSDs into enterprise storage systems and servers since the existing infrastructure was built around HDDs. SSDs were forced into the mold of HDD storage including the physical interface, host control interface and storage logic. Though PCIe flash drives became a step in the right direction, they lacked the ease of implementation that SAS/SATA SSDs have and do not fully expose the performance that NAND flash can offer.

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Facebook’s SSD findings: Failure, fatigue and the data center

Post by Robin Harris (thank you)

SSDs revolutionized data storage, even though we know little about how well they work. Now researchers at Facebook and Carnegie-Mellon share millions of hours of SSD experience.

Millions of SSDs are bought every year. It’s easy to be impressed by fast boots and app starts. But what about 24/7 data center operations? What are the common problems that admins should be concerned about?

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Why SSDs don’t perform

Good post by Robin Harris (thank you)

From their earliest days, people have reported that SSDs were not providing the performance they expected. As SSDs age, for instance, they get slower. Here’s why.

SSDs are a new and evolving (and the SATA versions are already obsolete) technology. It’s not surprising that we’re still learning how and where to use them.

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SSD Endurance. What does it mean to you?

Good post by Andrey Kudryavtsev (thank you)

I continuously think about the endurance aspect of our products, how SSD users understand it and use it for its positive benefits. Sadly, endurance is often underestimated and sometimes overestimated. I see customers buying High Endurance products for the benefit of protection, without understanding the real requirements of the application. Now that piece of night thoughts goes to my blog.

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How to safely use 8TB Drives in the Enterprise

Good post by George Crump (thank you)

After a few year hiatus higher capacity hard drives are coming to market. We expect 8TB drives to be readily available before the end of the year with 10TB drives soon to follow. And at the rate that capacity demands are increasing those drives can’t get here soon enough. But, these new extremely high-capacity disk drives are being met with some trepidation. There are concerns about performance, reliability and serviceability. Can modern storage systems build enough safeguards around these products for the enterprise data center to count on them?

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