Hardware Installation 25Cabling PowerVault MD1200 Series ExpansionEnclosuresYou can expand the capacity of your PowerVault MD3600i Series storage arrayby adding PowerVault MD1200 Series expansion enclosures. You can expandthe physical disk pool to a maximum of 96 physical disks using a maximum ofseven expansion enclosures.Expanding With Previously Configured PowerVault MD1200 SeriesExpansion EnclosuresUse this procedure if your expansion enclosure is directly attached to andconfigured on a Dell PERC H800 adapter. Data from virtual disks created ona PERC H800 adapter cannot be directly migrated to a PowerVault MD3600iSeries storage array or to a PowerVault MD1200 Series expansion enclosureconnected to a PowerVault MD3600i Series storage array.CAUTION: If a PowerVault MD1200 Series expansion enclosure that waspreviously attached to PERC H800 adapter is used as an expansion enclosure to aPowerVault MD3600i Series storage array, the physical disks of the expansionenclosure are reinitialized and data is lost. You must backup all data on theexpansion enclosure before attempting the expansion.To attach previously configured PowerVault MD1200 Series expansionenclosures to the PowerVault MD3600i Series storage array:1 Back up all data on the expansion enclosure(s).2 While the enclosure is still attached to the PERC H800 controller,upgrade the expansion enclosure firmware to the latest versionat support.dell.com.Windows systems users can reference the DUP.exe package and Linuxkernel users can reference the DUP.bin package.