How to create a mirrored volume in Windows Server 2008 R2?

To create a mirrored volume in Windows Server 2008 R2 In the Start Menu right click Computer, In the popup menu select Manage, On the left side of Server Manager expand Storage and select Disk Management, You need a second hard drive with as much unallocated space on it as the size of the volume …

IPv4 Network Subnet Prefixes, Masks, Usable Hosts

The following table shows the IPv4 network subnet prefixes, subnet masks, and the number of usable hosts. Prefix size Network mask Available subnets Usable hosts per subnet Total usable hosts /24 255.255.255.0 1 254 254 /25 255.255.255.128 2 126 252 /26 255.255.255.192 4 62 248 /27 255.255.255.224 8 30 240 /28 255.255.255.240 16 14 224 …