Scale and one more layer of redundancy. The 1050 moves to a 3U chassis with RAID-60 instead of RAID-6, and jumps to 66 TB and around 10,000 mailboxes, more than double the 950's capacity. ECC memory and dual power supplies carry over unchanged.

RAID-60 stripes data across multiple RAID-6 groups instead of just one. That combination lets a much larger drive array, the kind needed for 66 TB, tolerate multiple drive failures while still performing well under heavy read and write loads. It's a step built specifically for archiving at this scale.

You add a second archiver rather than trying to squeeze more onto one appliance. Federated search then lets your team run one search across every archiver you own, so growing past a single 1050 doesn't mean losing a unified view of your archived mail.

It's built for organizations at or approaching that mailbox count, or ones consolidating several smaller archivers into one. If you're well under 10,000 users, the 850 or 950 will cover you at a lower cost with the same redundant design. Talk to a rep and we'll size it honestly rather than sell you more than you need.

Yes. One flat cost covers the 1050 regardless of how many of your 10,000 recommended users you're actually archiving, with the full feature set included and no per-seat licensing.