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40GbE networking can be easily achieved with the installation of network cards via the PCIe expansion
(PCIe Gen3 x8).
On the ES1640dc v2, the PCIe slot is pre-installed with a LAN-10G2T-X550 network card that offers two
10GbE RJ45 ports. Users can replace it with a dual-port QSFP+ 40GbE NIC to provide massive data
transmission potential and to simplify network cabling.
Storage Features
Disk drives and Disk Enclosures
The QES NAS storage system supports two redundant Storage Controllers with the latest SAS 12Gb/s or
6Gb/s HDD interface (ES1640dc v2 comes with 12Gb/s SAS HDD interface whereas ES1640dc comes with
6Gb/s HDD interface) in 16 drive configuration, which can be expanded to a maximum of 128 drives with
the expansion units. The system supports all-SSD drive set within an enclosure. The drives are
numbered 1 - 16 sequentially starting from the bottom left to the top right.
When creating a storage pool, you must assign the ownership of this storage pool to either of the two
Storage Controllers (SCA or SCB) of the ES NAS system. LUNs can be distributed between the
two controllers to achieve optimized performance of the whole system. In addition to load balancing,
the dual active/active controller architecture provides system failover protection that enables
automatic transfer of storage resources from one controller to the other in case of failure events such as
JBOD or data service network connection failures.
Solid-state drives (SSDs)
The system can accommodate superfast solid-state drives, and traditional spinning disk drives such as
SAS and NL-SAS drives. However, SSDs are the best choice for I/O intensive workload and they can be
used for cache acceleration in QES. Cache configurations are available ranging from 1 drive up to 16
drives (full-SSD drive set) system cache. If you plan to install SSDs as partial drive set, please populate
the bottom 4 drives (Drive 1~4) slots since these drives will be the system drives.
RAID implementation
RAID implementation improves data storage reliability and performance.
Redundant Array of Independent Disks (RAID) is comprised of many disks to form a disk array. The
purpose of RAID implementation is to provide fault tolerance and improvements to storage reliability
and data service performance. When one or multiple disks of an array fail, data can be recovered from
the other disks in the array. The supported RAID types depend on the storage operation system and the
number of disks available.
Refer to the table below for explanations on RAID types:
RAID Type
Description
Single Disk
A single, stand-alone RAID group can be set up for your NAS. However, this setup
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