Samsung ES1642dc, Руководство пользователя по оборудованию

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Chapter 1. Introduction to QNAP ES NAS series
The Enterprise Storage NAS (ES NAS) series offers robust functionality, exceptional reliability,
and availability with the familiar ease of storage management shared by all of QNAP NAS product lines
.
The ES NAS series consists of two new major products: the ES1642dc and the ES1640dc. Both of these
models are ideal for mid- to large-scale network storage systems.
The ES NAS chassis adopts the industry standard 19 inch high-density enclosure design. The chassis
supports 16 drives, saving physical space and lowering the energy consumption required for
system cooling in data center environments.
The new ES NAS series has a high availability and serviceability architecture that supports two redundant
Storage Controllers and two power supply units. In addition, the EJ1602 and EJ1600 expansion
enclosures allow for the growth of the storage system up to a 128 drive maximum using the ES NAS’s
SAS drive expansion. These expansion units also have high availability features, including dual power
supplies and redundant cross loop connections to a base ES NAS. The new ES NAS series provides a
number of new capabilities that distinguish them from other enterprise-class NAS. The enhancements
are:

To deliver reliable performance and advanced data services, the ES NAS series combines
enterprise-grade hardware and a storage-optimized, enterprise operating system (QES)
based on ZFS.

The dual storage controllers are powered by Intel® Xeon® E5 series processors that deliver
exceptional computing power to run multiple workloads concurrently in addition to
advanced data services.

The two active storage controllers work as a cluster, backing up one another so that a
single controller can take over the storage resources owned by the other controller in the event
of a controller failure.

Non-disruptive firmware upgrades: Enables controller firmware upgrades with no interruption
to data access.

Cache configurations are available ranging from 1 drive up to 16 drives (full-SSD drive set)
system cache.

Data writes are protected by maintaining a copy in the battery-backed cache unit (comprising
DRAM, an mSATA module, and a battery backup unit) until the data is written to the HDDs.

Storage Pool Striping (across different expansion units) provides a mechanism to aggregates
hard drives into a bigger storage space with the ability to support multiple RAID groups across
different expansion enclosures. (Note that all RAID groups must have the same RAID type.)