Backup project

The task was about choosing and configuring appropriate backup techlology for SBS 2011 server.
1. Synology NAS DS411 Slim.
2. Switch Cisco with 2GB ports other ports Fastehternet.
To the first GB port, the server is connected.
Second GB port is for NAS server synology.

NAS Synology
– it provides iSCSI service an alternative to SAN.
– this solution was chosen ration price/service
– iSCSI provides SCSI across the LAN and TCP/IP encapsulates SCSI packets.
– The connected disk is accessible as a local disk in Windows server, without needing to install any drivers.

The NAS synology consist from 2 hard disks with 450 GB capacity per each.
This is failover solution if one of the disks is broken.
First I created a volume. RAID collects several hard disks into one functional topology. This collection of disks is called RAID.
We use RAID 1, which provides mirroring of data stored on each disk.
The content is recorded on both disks by RAID 1. If one disk fails, the copy is immediately ready to use.

Second I had to set up iSCSI LUN. The storage capacity is assigned, if data was physically created.
This process is controlled by iSCSI LUN at the NAS Synology.

Finally I configured DiskStation as the iSCSI target and connect it to the Windows server.
I connect iSCSI target to the LUN unit. Windows server provides easy iSCSI initiator.
I looked up iSCSI portal using IP address of Synology and default port 3260.
This iSCSI target is listed in Disk Management. Initialization is a must before the first use.
At the end I assigned label F: for this volume and after formating the disk appeared in Windows.

Summary:
iSCSI LUN assignes dynamically space for stored data. This process is provided by virtualization techlogy.
Although we use iSCSI for backup, the disk is visible in Windows server as a local disk.
It can provide more disk capacity for existing server. e.g. storing logs. Windows SBS 2011 server provides built-in backup technology. Each night server performs backup schedule and stores data in NAS.