EMC Retrospect for Macintosh Clients Upgrade 50 Clients License Only. License quantity: 50 license(s), Software type: Upgrade. Minimum storage drive space: 500 MB, Minimum processor: PowerPC, Minimum RAM: 128 MB. Platform: Mac. Compatible operating systems: Mac OS 7.1 Mac OS X 10.1.5 - Mac OS X 10.4. Language version: EnglishUpgrading Clients If you are upgrading to Retrospect 6.1 for Macintosh, you might also have to purchase an upgrade for your client packs and install new client applications on your client computers. If you have already purchased Annual Support and Maintenance for your client packs, your client upgrades are free. Upgrading from Retrospect 5.0 for Macintosh If you are upgrading from Retrospect 5.0 to Retrospect 6.1 and you currently have a client pack, you must upgrade the client pack and install new client applications for all your client computers. See the preceding table to identify the appropriate client applications. Upgrading from Retrospect 5.1 for Macintosh If you are upgrading from Retrospect 5.1 to Retrospect 6.1 and you currently have a client pack, you must upgrade the client pack only for your Mac OS X clients and you must install the Retrospect Client for Macintosh 6.0 client application only on your Mac OS X client computers. You do not need to purchase client pack upgrades or download new client applications for client computers that run Mac OS 7.1 through Mac OS 9, Windows, or Red Hat Linux operating systems. Upgrading from Retrospect 6.0 for Macintosh If you are upgrading from Retrospect 6.0 to Retrospect 6.1 and you currently have a client pack, you do not need to upgrade the client pack.