Non Functional Requirements Checklist

Here is a Check list of non functional aspects of a software system. These also needs to be planned for along with all the features.
This is a very general checklist and can be customized with exact expectations for the products.
The last two columns can be used to record expectations and criticality.

Category	Description	Expectations	Criticality
Capacity & Space	Number of concurrent users
	Number of transactions processed per hour
	Growth Requirement ( Users , Space, Transactions)
	Maximum File storage space allowed  for each user/company ???
	Minimum free Memory required to be available on server all the time
Response Time	Login to the system
	Loading a  screen with single record
	Loading a screen with Multiple Records ( Grid View)
	For Add/Edit a single record
	Batch update Operations
	Search  a record
	Export with records --- 20
	Import with records --- 20
	Upload File of size ---500 mb
	Upload File of size ---
	Download of file of size ---
	Download of file of size ---
	Reports
	Log Reports
Scalability	Hardware scalability
	Vertical Scalability - Can the Site be replicated to multiple locations for catering to increasing user base
Data Archiving	What is the limit after which data in key tables should be archived
	What is the criteria for identifying data to be archived
Portability	Browser Supported -
	OS Supported ( for client installable App) ---
	Minimum System configuration ---
	Memory Space required for Installation( for client installable App) --
Install ability ( for client installable App)	Ease of Installation
	Version upgrade process
	Expected frequency of version upgrades
Audit ability	Who visited a Web page
	Who read or updated a database
	Who read or updated a program
	What operations were performed
Robustness	Error Handling
	Exception Handling
Interface	With Email Client
	Any Payment gateways
	Support import/Export format of some other system
	Any accounting system
Availability	System Up Time
	Defined Maintenance window
Data Backup Policy	On what frequency data ( database +Files) should be backed up
	Data backup location ( for disaster recovery process)
Security	Security of servers
	Security of Files in server
	Security of Database server
	Security of records in database
	Security during data transmission
	Data Privacy
	Encryption policies

Here is another of my post about non functional requirements