Hi, Zoper I was asked to propose a solution for a insurance company. This comany has: 20,000,000 records of insurance contracts, 7,000,000 records of accounts, 60,000 records of products, The storages required for the above records amount to 200GB. This system is built for the agents which amount to 25,000 persons. The estimated traffice is 100,000 page views/day. The Platform doubtless is Linux or *Unix. ***I would like to adapt zope to slove this problem. *** I has experienced ZEO to handle hige traffic site, but in this case it seems that the ZODB is the key dancer. My question are: A) If it is possible for a Data.fs grows up to 200GB? ( Mounted fs?) B) Can "BTree Folder" handle 20 million of objects in a single folder? If not, how many ? C) Can ZCatalog handle 20 millions of objects (indexed fields could up to 200 millions)? Any suggestion is appreciated. BTW, You are welcomed if you or your company interest in participation. Please submit your profile and let me know what you can contribute. But currently, I have not yet got the contract. :-) It is in a very early state. Well, there are many other opportunities in TW,HK,CN. Iap, Singuan