Windows Server 2008/ 2008 R2 cannot ping setting

Configure Windows Firewall Settings – File and Printer Sharing

By default, Windows Firewall for WIndows Server 2008 is configured to disallow File and Printer Sharing on the network.  By default Windows Server 2008 firewall is configured with Windows Firewall running, and with File and Printer Sharing disabled.  This blocks ICMP Echo Request packets used by the PING command. You can allow the server to respond to ping requests by doing the following:

1. Turn off Windows Firewall on the Windows 2008 Server (not recommended)- OR -
2. Enable the File and Printer Sharing option in Windows Firewall Configuration Settings
   
   1. Start > Control Panel > Network and Intranet
   2. Under the Windows Firewall section heading, Click the Allow a program through Windows Firewall link
   3. In the programs and ports list, check the File and Printer Sharing option

Monitoring SQL Server disk I/O with PerfMon counters

As a DBA, you need to understand the I/O of your SQL Server disk subsystem. In part three of this screencast series, SQL Server MVP Kevin Kline explains how to track I/O in your direct-attached storage disks (DASD).
Get optimal throughput values to keep an eye on when using Performance Monitor counters for physical disk reads and writes and disk queue length. Kline also shares some best practices you can't afford to miss.

Video: http://searchsqlserver.techtarget.com/video/Monitoring-SQL-Server-disk-I-O-with-PerfMon-counters