MENU
Is NVMe Really Revolutionary?
Posted by Jon Toigo on August 19, 2016
4/5 (1)

To hear advocates talk about NVMe – a de facto standard created by a group of vendors led by Intel to connect flash memory storage directly to a PCIe bus (that is, without using a SAS/SATA disk controller) – it is the most revolutionary thing that has ever happened in business computing.  While the technology provides a more efficient means to access flash memory, without passing I/O through the buffers, queues and locks associated with a SAS/SATA controller, it can be seen as the latest of a long line of bus extension technologies – and perhaps one that is currently in search of a problem to solve.

I am not against faster I/O processing, of course.  It would be great if the world finally acknowledged that storage has always been the red-headed stepchild of the Von Neumann machine.  Bus speeds and CPU processing speeds have always been capable of driving I/O faster than mechanical storage devices could handle.  That is why engineers used lots of memory – as caches ahead of disk storage or as buffers on disk electronics directly – to help mask or spoof the mismatch of speed.

latency comparison

(more…)

Please rate this

Seagate introduces 60TB SSD drive
Posted by Oksana Zybinskaya on August 16, 2016
4.5/5 (2)

Seagate shows off two new SSD products: an 8TB NVMe drive and a spacious 60TB SSD prototype in a 3.5-inch form factor.

This 60TB consists of more than a 1,000 Micron 3D NAND dice fitted into a full-size, 3.5-inch disk form factor package. Apparently, it has dual port 12Gbit/s SAS interface and 150,000 random read IOPS, with undisclosed write IOPS. The sequential read/write numbers should be 1.5 and 1.0GB/sec.

Nytro XP7200

       Nytro XP7200  with heat sink on top

(more…)

Please rate this

Hewlett-Packard Enterprise introduces new naming convention
Posted by Oksana Zybinskaya on February 11, 2016
Tags: , , , , ,
4.6/5 (15)

New Integrity MC990 X is the first server in a line conforming to the new naming convention, with ‘MC’ standing for ‘mission critical’ and ‘X’ standing for ‘Xeon’.It replaces the Proliant DL980 (‘DL’ – ‘density line’). The name changes are implemented in order to meet specific customer needs, e.g., high performance and cloud computing. HP will keep the Proliant name for low-end and mid-range servers, and also keep the BL (blade) designation.

HPserver

(more…)

Please rate this

Storage Spaces Direct: Overview
Posted by Anton Kolomyeytsev on November 20, 2015
5/5 (1)

This is a short summary on Storage Spaces Direct – the first true software-defined storage from Microsoft, its history and peculiarities. Software-defined storage is a concept, which involves storing data without dedicated hardware. This is an introduction to a series of posts dedicated to theoretical and practical research of S2D. The post is not a full description of the Storage Spaces Direct technology, more info is available on Microsoft resources. Our focus here is the actual problem that S2D solved for virtualization world, being truly independent from underlying hardware, as SDS should. Its predecessor, Clustered Storage Spaces, had a very serious hardware lock-in with its requirements for SAS fabrics, SAS switches and SAS JBODS. Thus, Storage Spaces Direct is an interesting technology to research.

JBOD-Scale-Out

(more…)

Please rate this