Galaxy is a cluster for large virtualization environment.
It is constituted by a high performance
SAN, a modular
virtualization unit and a
NAS,
all optimized to operate together with the best performance and reliability.
The task of the SAN is to handle the live images of the virtual machines, while the virtualization unit executes
the virtual machines and the NAS stores the backup.
The SAN role is fundamental for the proper functioning of the virtualization environment. Is common knowledge that
the
storage is the most critical aspect of the virtualization, since it's really stressed by high load random
I/O and usually becomes the bottleneck of the performance.
The SAN built-in in Galaxy is designed to deal with intensive and continuous load.
Storage Area Network main features:
- Up to 8 modules
- SATA or SAS hard drives
- SSD write-back cache
- Gigabit or 10 Gigabit ethernet connection
- Support of ethernet trunking
- Full High Availability
The virtual machines are performed by the virtualization unit, which consists in
several modules optimized for the
execution of virtual machines. These modules can have CPUs with high frequency but few cores or CPUs with low frequency and many cores,
while they've always a considerable amount of memory.
The correct sizing of modules is studied case by case, considering also that
it's necessary to keep enough resources for the
hot-swap of the virtual machines in case of power-off of a module.
Virtualization unit features:
- Up to 16 modules
- SSD write-through cache
- Gigabit or 10 Gigabit ethernet connection
- Distinct connections to SAN, NAS and LAN
- Support of ethernet trunking
- Full High Availability
- Web managed
Galaxy has one or more NAS, usually dedicated to backup.
The NAS is relatively slow compared to the SAN,
but allows to have a lot of space at a moderate cost.
Network Area Storage features:
- Up to 20 SATA hard disk
- Support of NFS, CIFS, FTP and rsync
- Gigabit or 10 Gigabit ethernet connection
- Support of ethernet trunking
- Web managed
The connection between the modules can be made with
Gigabit or 10 Gigabit ethernet switch.
The hardware configuration is scalable according to the customer needs.
Common configurations:
| SAN Modules |
Available SAN space (TB) |
Virtualization Modules |
Virtualization Cores |
Virtualization Ram (GB) |
NAS volume space (TB) |
| 4 |
12 |
4 |
64 |
128 |
12 |
| 6 |
30 |
12 |
192 |
768 |
30 |
Galaxy installation requirements:
- Suitable conditioned room at a temperature of 21 degrees centigrade
- Rack cabinet
- Two branches under UPS capable of supplying 3KW or more, depending on the Galaxy configuration
Please,
contact us for more in depth technical specifications, case analysis
and commercial information.
