This group of data represents MS Exchange Server Information Store activity.
Note: This attribute group is available only in Exchange Server 2007 and 2010. This attribute group is a single instance attribute group.
Active Anonymous User CountNumber of active users. The value format is a 4-byte integer.
Active Connection CountNumber of connections that have shown some activity in the last 10 minutes.
The value format is a 4-byte integer.
Appointment Instances CreatedThe number of appointment instances that are created. The value format is a 4-byte integer.
Appointment Instances DeletedThe number of appointment instances that are deleted. The value format is a 4-byte integer.
Active User CountNumber of user connections that have shown some activity in the last 10 minutes.
The value format is a 4-byte integer.
Anonymous User CountNumber of anonymous users that are connected to the information store. The value format is a 4-byte integer.
Client RPCs attemptedThe total number of RPCs attempted by the users since the store was started. The value format is a 4-byte integer.
Client RPCs attempted/SecThe client-reported rate of RPCs attempted by the users since the store was started. The value format is a 4-byte float.
Client RPCs FailedThe number of failed RPCs that are reported by the client since the store was started.
The value format is a 4-byte integer.
Client RPCs Failed/SecThe rate of failed RPCs that is reported by the client since the store was started.
The value format is a 4-byte float.
Client RPCs succeededThe number of successful RPCs that are reported by the client since the store was started. The value format is a 4-byte integer.
Client RPCs succeeded/secThe rate of successful RPCs that is reported by the client since the store was started. The value format is a 4-byte float.
Connection CountThe number of client processes that are connected to the information store. The value format is a 4-byte integer.
Database Session Hit RatePercent hit rate on re-using database sessions since the server was started.
The value format is a decimal.
Note: The value is 0 for Exchange Server 2007.
Exchmem Current Bytes Allocated (MB)The current number bytes (in MB) that is allocated through Exchmem (excluding virtual allocations). The value format is a 4-byte integer.
Exchmem Current Number of Virtual AllocationsThe current number of Exchmem allocations that are directly allocated through virtual memory. The value format is a 4-byte integer.
Exchmem Current Virtual Bytes Allocated (MB)The current number bytes (in MB) that is virtually allocated through Exchmem. The value format is a 4-byte integer.
Exchmem Maximum Bytes Allocated (MB)The maximum concurrent bytes (in MB) allocated through Exchmem (excluding virtual allocations). The value format is a 4-byte integer.
Exchmem Maximum Virtual Bytes Allocated (MB)The maximum concurrent bytes (in MB) virtually allocated through Exchmem. The value format is a 4-byte integer.
Exchmem Number of Additional HeapsThe number of Exchmem heaps that are created by the MS Exchange IS after startup.
Exchmem Number of heaps with memory errorsThe total number of Exchmem heaps that were not allocated due to insufficient available memory.
Exchmem Number of memory errorsThe total number of Exchmem allocations that cannot be satisfied by the available memory.
Exchmem Total Number of Virtual AllocationsThe total number of Exchmem allocations that are directly allocated from virtual memory. The value format is a 4-byte integer.
Maximum Anonymous UsersThe maximum number of anonymous users since server startup. The value format is a 4-byte integer.
Maximum ConnectionsThe maximum number of concurrent connections since server startup. The value format is a 4-byte integer.
Maximum UsersThe maximum number of concurrent users since server startup. The value format is a 4-byte integer.
Peak Push Notifications Cache SizeThe maximum size of the Push Notifications Cache. The value format is a 4-byte integer.
Push Notifications Cache SizeThe current size of the Push Notifications Cache since the server was started. The value format is a 4-byte integer.
Push Notifications Generated/SecThe number of times the notifications are sent to clients, who have registered for notifications of changes to tables in the information store, per second. The value format is a decimal.
Push Notifications Skipped/SecThe number of push notifications per second that were skipped by caching at the server. The value format is a decimal.
Read Bytes RPC Clients /SecThe number of times that bytes are read from RPC clients per second since the server was started. The value format is a decimal.
Recurring Appointment Creation RateThe number of recurring appointments that are created per second. The value format is a 4-byte float.
Recurring Appointment Deletion RateThe number of recurring appointments that are deleted per second. The value format is a 4-byte float.
Recurring Appointment Modification RateThe number of recurring appointments that are modified per second. The value format is a 4-byte float.
RPC Averaged LatencyThe average RPC latency in milliseconds for the past 1024 packets.
RPC Client Backoff/SecThe rate at which the server notifies a client to withdraw. The value format is a 4-byte float.
RPC Num of Slow PacketsThe number of RPC packets in the past 1024 packets that have latencies longer than 2 seconds. The value format is a 4-byte integer.
RPC Operations/SecThe number of times the RPC operations occur per second since the server was started. The value format is a decimal.
RPC Operations Failed Due to Server Too BusyThe number of RPC operations that failed because the server was too busy since the mailbox store was started. The value format is a 4-byte integer.
RPC Operations Failed per Second Due to Server Too BusyThe number of RPC operations that have failed per second because the server was too busy. The value format is a 4-byte float.
RPC Packets/SecThe number of times the RPC packets are processed per second since the server was started. The value format is a decimal.
RPC RequestsThe number of client requests that are currently being processed by the information store.
The value format is a 4-byte integer.
RPC Requests PeakThe maximum number of client requests that were processed simultaneously by the information store since it was started. The value format is a 4-byte integer.
Single Appointment Creation RateThe number of single instance appointments that are created per second. The value format is a 4-byte float.
Single Appointment Deletion RateThe number of single instance appointments that are deleted per second. The value format is a 4-byte float.
Single Appointment Modification RateThe number of single instance appointments that are modified per second. The value format is a 4-byte float.
Single Appointments CreatedThe number of single instance appointments that are created. The value format is a 4-byte float.
Single Appointments DeletedThe number of single instance appointments that are deleted. The value format is a 4-byte float.
Single Appointments ModifiedThe number of single instance appointments that are modified. The value format is a 4-byte float.
Slow QP ThreadsThe number of Query Processor threads that are running unoptimized queries. The value format is a 4-byte float.
Slow Search ThreadsThe number of search threads that currently run queries, which are not optimized.
The value format is a 4-byte integer.
System NameThe key for the table view in the format hostname: EX. This character string provides a unique identifier for each server across an enterprise. The value is alphanumeric with a maximum of 64 characters.
TimestampThe time when this data was collected. The format is MM/DD/YY HH:mm:SS, where the following measures apply:
MM Month
DD Day
YY Year
HH Hour
mm Minute
SS Second
User CountThe number of users that are connected to the information store. The value format is a 4-byte integer.
Virus Scan Files CleanedThe total number of separate files that are cleaned by a virus scanner. The value format is a 4-byte integer.
Virus Scan Files Cleaned/SecThe rate at which separate files are cleaned by a virus scanner. The value format is a 4-byte float.
Virus Scan Files QuarantinedThe total number of files that are shifted into quarantine by a virus scanner. The value format is a 4-byte integer.
Virus Scan Files Quarantined/SecThe rate at which separate files are shifted into quarantine by a virus scanner. The value format is a 4-byte float.
Virus Scan Files ScannedThe total number of separate files that are scanned by a virus scanner. The value format is a 4-byte integer.
Virus Scan Files Scanned/SecThe rate at which separate files are scanned by a virus scanner. The value format is a 4-byte float.
Virus Scan Folders Scanned in BackgroundThe total number of folders that are processed by background scanning. The value format is a 4-byte integer.
Virus Scan Messages CleanedThe total number of top-level messages that are cleaned by a virus scanner. The value format is a 4-byte integer.
Virus Scan Messages Cleaned/SecThe rate at which top-level messages are cleaned by a virus scanner.
The value format is a 4-byte float.
Virus Scan Messages DeletedThe total number of top-level messages that are deleted upon the request of a virus scanner. The value format is a 4-byte integer.
Virus Scan Messages Deleted/SecThe rate at which top-level messages are deleted upon the request of a virus scanner. The value format is a 4-byte float.
Virus Scan Messages ProcessedThe total number of top-level messages that are processed by a virus scanner. The value format is a 4-byte integer.
Virus Scan Messages Processed/SecThe rate at which top-level messages are processed by a virus scanner. The value format is a 4-byte float.
Virus Scan Messages QuarantinedThe total number of top-level messages that are shifted into quarantine by a virus scanner. The value format is a 4-byte integer.
Virus Scan Messages Quarantined/SecThe rate at which top-level messages are shifted into quarantine by a virus scanner. The value format is a 4-byte float.
Virus Scan Messages Scanned in BackgroundThe total number of messages that are processed by background scanning. The value format is a 4-byte integer.
Virus Scan Queue LengthThe number of outstanding requests that are currently queued for virus scanning. The value format is a 4-byte integer.
VM Largest Block SizeThe size of the largest free virtual memory block in megabytes.
VM Total 16 MB Free BlocksThe total number of free virtual memory blocks that are larger than or equal to 16 MB.
VM Total Free BlocksThe total number of free virtual memory blocks.
VM Total Large Free Block BytesThe total number of megabytes in free virtual memory blocks that are larger than or equal to 16 MB.
Write Bytes RPC Clients/SecThe number of times that bytes are written to RPC clients per second since the server started. The value format is a decimal.