High-Availability Cluster
RackStation RC18015xs+ / Expansion Unit RXD1215sas
Synology high-availability cluster integrates two RackStation RC18015xs+ as dual
computing nodes and multiple Expansion Unit RXD1215sas as shared storage
units, providing the secure, reliable, and superior-performance network attached
storage solution for large scale businesses. Synology RC18015xs+ and RXD1215sas
are backed with Synology’s 5-year limited warranty.
Highlights
● High-availability cluster
by dual computing nodes &
shared storage
● Data protection by snapshot
technology
● SSD cache support
● Scale up to 180 drives with 15
Synology RXD1215sas
● Superior performance fueled by
quad-core 3.3GHz CPU in each
computing node
● Optional 10GbE network
capability
● VMware®, Citrix®, and Microsoft®
Hyper-V® certied
● Backed with Synology’s 5-year
limited warranty & Synology
Replacement Service (SRS)
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Reliable Active/Passive Failover Cluster
System and service availability is critical for businesses. However, server component,
environmental problems, human errors, or system malfunctions happen sometimes that
might lead to service interruption and raise the cost of running businesses.
Synology high-availability (HA) cluster solution is born to alleviate this problem by
combining two RackStation RC18015xs+ and multiple Expansion Unit RXD1215sas as one HA
cluster. The two RC18015xs+ computing nodes provide Active / Passive automatic failover.
If the active server suers a malfunction, the passive server is able to provide quick relief by
taking over all the running applications and services, ensuring high levels of availability.
Active server
Shared Storage
(Up to 15 units)
Passive server
The connected RXD1215sas acts as the shared storage pool of the two servers, so no
data replication is required, saving more energy and rack spaces. The storage capacity is
expandable by adding more RXD1215sas (up to 15 sets) to the HA cluster, providing the
scalability up to 180 HDDs and a maximum raw capacity beyond 1 petabyte.
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The Btrfs le system brings storage
management to the next level by
providing more ecient storage utilization,
scheduled shared folder snapshot, and le /
folder-level data restoration.
Btrfs: Next Generation Storage Efciency
RC18015xs+ introduces the Btrfs le system, bringing the most advanced storage
technologies to meet the management needs of modern large scale businesses:
● Built-in data integrity check detects data and le system corruption with data
and meta-data checksums and improve overall stability.
● Flexible Shared Folder/User Quota System provides comprehensive quota
control on all user accounts and shared folders.
● Advanced snapshot technology with customizable backup schedule allows
up to 256 copies of shared folder backups without occupying huge storage
capacity and system resources.
● File or folder level data restoration brings huge convenience and saves time
for users who wish to restore only the specic single le or folder.
● Cloud Station with le versioning reduces down to half of storage
consumption when compared with Ext4 le system.
Superior Performance
RC18015xs+ delivers superior performance at over 2,270 MB/s throughput and 355,400
IOPS with dual 10GbE connection using link aggregation.4 Through advanced ash
technology, the combination of hard drives and SSD cache boosts throughput eciently
while minimizing cost per gigabyte.
In addition to the default 4 Gigabit ports, RC18015xs+ comes with one PCIe 3.0 x8 slot
(running at x8 mode), allowing installation of one 10GbE network interface card (NIC) for
maximized bandwidth.
Equipped with 8GB ECC RAM and up to 32GB expansion support, RC18015xs+ ensures
data accuracy as well as superior performance to provide a rigorous foundation for the
mission-critical tasks of your businesses.
Various Reliability Mechanisms
In addition to the active / passive server design, both RC18015xs+ and RXD1215sas come
with redundancy of key system components including power supply units, SAS modules,
SAS connection cables, system fans, LAN ports, even the Heartbeat link. In case of failure,
the system components are designed for easy replacement and further reduce the chance of
system down-time.
Virtualization Certied
RC18015xs+ provides seamless storage solutions for virtualization environments, including
VMware®, Citrix®, and Hyper-V®. Being VMware vSphere® 5 and VAAI® integration
certied, RC18015xs+ helps ooad specic storage operations and optimizes computation
power for unparalleled performance and eciency in VMware environments. As the
centralized storage of a virtual environment, RC18015xs+ enables virtual machine migration,
allowing movement from server to server whilst eliminating service downtime and
disruption to user. Windows® Ooaded Data Transfer (ODX) and Synology Advanced
LUN support extremely improves the eciency on massive data transfer and migration.
Synology Snapshot Manager oers better support to servers under VMware vSphere or
Windows environment. IT managers can expect guaranteed VM status and data consistency
in its highest form.
Comprehensive Business Applications
Powered by the innovative Synology DiskStation Manager (DSM), RC18015xs+ comes
fully-equipped with applications and features designed specically for large-scale business:
● Easy integration with existing business network environments through
Windows® AD and LDAP directory services without recreating user accounts.
● Windows ACL support provides ne-grained access control and ecient
privilege settings, allowing RC18015xs+ to t seamlessly into current
infrastructure.
● Built-in backup applications protect information assets by regularly backing up
les and iSCSI LUNs locally and remotely.
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