Hi, Long time lurker (from Exchange 4 days) here needing some expert advice Current environment =- Exchange 2003. 3 Mailbox Servers 2 Front end servers. 10,000+ (and growing) mailboxes in 6 SG's 14 Dtatabases (each around 100GB) negligible Public Folder usage. Single Site. (no quotas, no formal archiving procedures) Servers are a mixed bunch of of Dell 1750 and 2850 Clients in 140+ remote locations. 75% clients OWA only (light users). 5% Outlook Anywhere HTTP only (Medium Users). 20% LAN connected OWA (Normal Users). Proposed E2K7 environment (derived at using E2K7 sizing tool) - 2 Client Access/Hub Transport Servers, 1 x clustered mailbox server using CCR (8 DB's in 8 Storage Groups ) Estimated initial storage requirement 4836 GB. UM and Edge next year when regional offices open Outlook Anywhere access expected to increase dramatically and OWA to decrease. I have 2 x HP DL360 G5's with 2 x Quad core 2.33 GHz that I can use to form cluster. My delimas - 1. even if I boost RAM to 32 GB will the DL360's have enough grunt. 2. My research indicates that MS lean towards DAS - should I be recommending DAS or SAN, and some compelling reasons why I should choose one over the other 3. constructive criticism please. 4. Budget is very restricted thanks in anticipation. Brian
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