Specifications

Disks and Units
68 SnapServer Administrator Guide
Adding Disk Drives to a RAID
This section describes how to safely add drives to an existing RAID 1, 5, 6, or 10. On
SnapServers, after a fresh drive is inserted into a drive bay, you must use the
Administration Tool to add it to a RAID.
How RAIDs React to Disk Drive Additions
•RAID 0 (nonredundant) — You cannot add a drive to a RAID 0. To reconfigure a
RAID 0, you must delete the RAID and then recreate it.
•RAID 1 (redundant) — You can add a new drive to a RAID 1 as either a hot spare
or as a new member. Adding a disk drive to a RAID 1 does not add storage
capacity. The new member simply creates an additional copy of the original
drive.
• RAID 5, RAID 6, RAID 10 (redundant) — You can add a hot spare to a RAID 5;
RAID 6, or RAID 10. However, you cannot add a new drive as a new member.
Adding New Disk Drives to Increase Capacity
For those servers and expansion arrays that ship with fewer than the maximum
number of disk drives, additional drives can be added to the server or expansion
array to increase capacity. Drives of different rotational speed (e.g., SAS and SATA
drives) can be combined in the same server.
However, they cannot be combined in
the same column, and it is recommended that columns of same-type drives be
grouped together.
If you are combining drives with different rotational speeds, use
the figures below to plan where to place the disk drives.
Recommended Disk Drive Configurations
X Rotational Speed
Y Rotational Speed