HP XP20000/XP24000 HP StorageWorks XP24000/XP20000 Disk Array Site Preparation - Page 37

Preventing metallic particulate contamination Metallic particulates can be especially harmful around electronic equipment. This type of contamination may enter the data center environment from a variety of sources, including but not limited to floor tiles, worn air conditioning parts, heating ducts, rotor brushes in vacuum cleaners, or printer component wear. Because metallic particulates conduct electricity, they have an increased potential for creating short circuits in electronic equipment. Over time, very fine whiskers of pure metal can form on electroplated zinc, cadmium, or tin surfaces. If these whiskers are disturbed, they may break off and become airborne, possibly causing failures or operational interruptions. For over 50 years, the electronics industry has been aware of the relatively rare but possible threat posed by metallic particulate contamination. During recent years, a growing concern has developed in computer rooms where these conductive contaminants are formed on the bottom of some floor tiles. Although this problem is relatively rare, it may be an issue within your computer room. Since metallic contamination can cause permanent or intermittent failures on your electronic equipment, HP strongly recommends that your site be evaluated for metallic particulate contamination before installation of electronic equipment. Data communication requirements Route data communication cables away from areas of high static electric fields created by power transformers and heavy foot traffic. Use shielded data communication cables that meet approved industrial standards to reduce the effects of external fields. The XP24000 and XP20000 frames support top access and bottom access for hot cables. Routing the host cables in an XP24000 require HP support personnel to install. The data communication infrastructure needed for the XP disk array is described in Table 13 and in "HP Insight Remote Support Advanced" on page 38. Table 13 Data communication requirements Item Purpose A dedicated analog phone line for HP StorageWorks XP Continuous Track (C-Track) modem-based remote support option (if chosen) If you choose C-Track modem connectivity, you will need a dedicated analog phone line. HP recommends a data quality modem line with 28.8 Kbps capability in order to support reliable file transfer and serve the overall objectives of the remote support solution. An HP representative will configure C-Track. Internet connectivity infrastructure for HP StorageWorks XP Continuous Track (C-Track) Internet-based remote support option (if chosen) If you choose C-Track Internet connectivity, additional preparation may include server and router requirements, which you and HP may be responsible for implementing. For more information, refer to "HP Insight Remote Support Advanced" on page 38 or contact your HP representative. A twisted pair (Cat 5) cable Needed to connect the HP system to an available Ethernet port on the customer's LAN. To ensure network security, consult with an HP representative and your network administrator before selecting the appropriate location of your LAN drop. XP24000/XP20000 Disk Array Site Preparation Guide 37