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[출처] http://office.microsoft.com/en-us/office365-sharepoint-online-enterprise-help/sharepoint-online-software-boundaries-and-limits-HA102694293.aspx

Limits for SharePoint Online for Office 365 Enterprise, Education, and Government

 

These plans have common boundaries and limits. The following table describes those limits.

Feature	Office 365 Enterprise plans (including E1 – E4, A2-A4, G1-G4, and SharePoint Online Plan 1 and Plan 2)	Office 365 Kiosk plans (Enterprise and Government K1 – K2)
Storage per user (contributes to total storage base of tenant)	500 megabytes (MB) per subscribed user.	Zero (0). Licensed Kiosk Workers do not add to the tenant storage base.
Additional storage (per GB per month); no minimum purchase	To buy storage, see Change storage space for your subscription.  Important    You can’t buy additional storage for a trial subscription.	To buy storage, see Change storage space for your subscription.  Important    You can’t buy additional storage for a trial subscription.
Storage base per tenant	10 GB + 500 MB per subscribed user + additional storage purchased. For example, if you have 10,000 users, the base storage allocation is approximately 5 TB (10 GB + 500 MB * 10,000 users). You can purchase an unlimited amount of additional storage.	10 GB + additional storage purchased. You can purchase an unlimited amount of additional storage.
Site collection storage limit	Up to 1 TB per site collection. (25 GB for trial). SharePoint admins can set storage limits for site collections and sites. The minimum storage allocation per site collection is 100 MB.	Up to 1 TB per site collection. (25 GB for a trial). SharePoint admins can set storage limits for site collections and sites. The minimum storage allocation per site collection is 100 MB. Kiosk workers (plans K1-K2) cannot administer Sharepoint site collections. You will need a license for at least one Enterprise plan user to manage Kiosk site collections.
Site collections (#) per tenant	10,000 site collections (other than personal sites).	10,000 site collections.
Subsites	Up to 2,000 subsites per site collection	Up to 2,000 subsites per site collection
Personal site storage	25 GB per user, as soon as provisioned. Personal site storage applies to a user’s OneDrive for Business library and personal newsfeed. This amount is counted separately, and does not add to or subtract the overall storage allocation for a tenant. A SharePoint admin can allocate up to 1 TB per user. See Manage storage limits for OneDrive for Business libraries for details. For more information about OneDrive for Business, see Additional information about OneDrive for Business limits later in this article.	Not available.
Public Website storage default	5 GB A SharePoint admin can allocate up to 1 TB (the limit for a site collection).	5 GB A SharePoint admin can allocate up to 1 TB (the limit for a site collection). Kiosk workers (plans K1-K2) cannot administer Sharepoint site collections. You will need a license for at least one Enterprise plan user to manage Kiosk site collections.
File upload limit	2 GB per file.	2 GB per file.
Sync limits	20,000 items in the OneDrive for Business library, including files and folders. 5,000 items in site libraries, including files and folders.	20,000 items in the OneDrive for Business library, including files and folders. 5,000 items in site libraries, including files and folders.
Maximum number of users per tenant	1 – 500,000+  Note    If you have more than 500,000 users, please contact the Microsoft represenative to discuss detailed requirements.	1 – 500,000+  Note    If you have more than 500,000 users, please contact the Microsoft represenative to discuss detailed requirements.
Maximum number of external user invitees	Up to 10,000 unique external users in the directory (external users who have accepted sharing invitations). What is an external user?	Up to 10,000 unique external users in the directory (external users who have accepted sharing invitations). What is an external user?