For more information, see Hotfix XS62ESP1001 - For XenServer 6.2.0 Service Pack 1.
Customers who wish to use XenCenter to install this Service Pack must use the compatible version of XenCenter. Insufficient disk space on the dom0 filesystem can cause the Service Pack installation to fail with the error message: The uploaded patch file is invalid. Before uploading and applying XS62ESP1, customers MUST ensure that the control domain (dom0) filesystem on EACH XenServer host to which the Service Pack will be applied, has at least 450 MB of free disk space. Security hotfixes for XenServer v6.2.0 will be made available for customers who have not yet installed Service Pack 1 for a period of six months (until 16 June 2014). Installation of XS62ESP1 will be required for future functional hotfixes. Connection kits are available for BMS and cellular communication.XenServer 6.2.0 Service Pack 1 (XS62ESP1) should be installed by all customers running XenServer 6.2.0. Activated through an add-on connection kit, the sensor can trigger the alert system sending notification of flood detection to facility personnel. 
This series features a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve. Maximum working pressure is 175 psi (12.06 bar).
Check with local water authorities for installation requirements. Series 009 is ideal for protection of health hazard cross-connections or for containment at the service line entrance.
They have a bronze body construction (1/4 to 2 in.) or FDA approved epoxy coated cast iron (2 1/2 to 3 in.), two in-line independent check valves, replaceable check seats with an intermediate relief valve, and ball valve test cocks. Series 009 reduced pressure zone assembly backflow preventers are designed to prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage and or backpressure.
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