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About the absence of hot swap drives in the BX924 S3

Today, Fujitsu offers two blade server models: the BX920 S3 and the BX924 S3.

The BX920 S3 is an inexpensive universal server blade. It is built on a more economical Romley EN platform that supports E5-24xx processors, up to 384GB of RAM, up to two hot-swap drives.

The BX924 S3 is the ultimate in today's Intel dual-socket platform in blade format. This server is ideal for business-critical applications, working with databases, rich virtualization systems and cloud services. The server is built on a more powerful Romley EP platform with Xeon E5-26xx processors. This server, in view of the typical scenarios in modern data centers, implies a large computing power and very serious amounts of RAM (up to 768GB) - which is simply necessary to process a large number of virtual machines, for example. The concept of modern dynamic infrastructures involves the active use of densely packed computing resources on the one hand, and data storage systems on the other. The presence of local disk space in the blade server in this concept is no longer as critical as it used to be, and therefore the BX924 S3 provides for the possibility of using drives without hot-swapping — either two SSD drives or one SATA hard drive. From an engineering point of view, avoiding hot-swap drives saved space for additional memory slots. The server also provides the possibility of using the built-in hypervisor on the USSB flash card, and rich switching capabilities for effective connection to the storage system. The server has a dual-channel converged controller with a capacity of 10 Gb / s, and the two available mezzanine slots allow you to organize additional channels, be it Ethernet 1 or 10 Gb / s, Fibre Channel 8 Gb / s or FCoE. Placing master data not on the server, but on storage, allows you to organize much more reasonable procedures for data protection, backup, recovery in case of failure, and rollback to previous versions - thanks to snapshot functionality and other storage technologies that are not possible to implement server without excessive costs. Therefore, the BX924 S3 model as a whole, where the emphasis is on performance, memory and communication capabilities — as opposed to local storage on hot-swap drives — looks quite logical.

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Source: https://habr.com/ru/post/160675/


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