Raid 1 - Disk Mirroring - SilverStone DS222 Manual

Drive Storage DS222
System Setup
2.1.1 Installation step
Installing hard drives for the first time or hard drive fails.
1.Turn the power off and disconnect USB 3.0 cable first, then install hard drive(s) or replace faulty drives (s).
2.Set RAID mode (Non-RAID, RAID 1, RAID 0 or Big mode)。
3.Connect USB 3.0 Y cable to your computer and turn the power on, then press "confirm button" for 5 seconds to confirm the new setting.
＊If your laptop is unable to support DS222 with full power, please connect the micro-USB 5V/1A mobile phone
charging cable to provide sufficient power for the DS222.
You need to first turn DS222's power switch off, wait for 3-5 seconds, then turn it back on to connect the USB 3.0 Y cable and 5V/1A mobile
phone charging cable to the DS222.
4.Installing new hard drives
Ⅰ、For PC users, use the disk management tool
Ⅱ、For Mac users, use the disk utility to create a new partition and format the drives.
5.Installing used hard drives
Ⅰ、For PC users, use the disk management tool.
Ⅱ、For Mac users, use the disk utility to delete the old partition and format the drives.
2.2 RAID Modes Setting
RAID refers to redundant array of independent disks. It is a storage technology that combines multiple disk drive components into a logical unit.
Data is distributed across the drives in one of several ways called "RAID levels", depending on the level of redundancy and performance
required.
2.2.1 Non-RAID
The two hard drives show independent volumes, each drive can be formatted and accessed separately. If one drive fails, the other is
not affected. This mode doesn't provide any performance or redundancy benefits.
2.2.2 RAID 0 – Disk Stripping
The drives are shown as one single volume, but the size will be two times of the drive with smallest capacities (e.g. If there are two
drives, one is 1TB and the other is 2TB, then the available volume is only 2TB).
RAID 0 will bring faster transfer speed compare to other modes, however, if one hard drive fails then the array will crash.
2.2.3 RAID 1 – Disk Mirroring
The drives are shown as one single volume, but the size will depend on the drives with smallest capacities (e.g. If there are two
drives, one is 1TB and the other is 2TB, then the available volume is only 1TB).
RAID 1 will bring redundancy benefits. RAID 1 mirror one drives data to the other, so when one drive fails, you can still access data
in the other drive, or you can replace the damaged drive to rebuild RAID 1 array.
We strongly recommend replacing the faulty drive immediately to rebuild data and assure continued proper backup and data safety.
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