EMAIL RECOVERY VIA EMULATION AND INDEXING
Emails can be recovered in a quick and granular fashion by restoring an EDB within an emulated Exchange server environment and then creating a full-text index for each mailbox in the restored EDB. The full-text index could then be employed to perform searches for particular emails thereby leveraging the granular search capabilities that the full-text index provides. Any emails that are identified by searching the full-text index can then be retrieved from the restored EDB in the emulated Exchange environment and populated into the production Exchange environment. In this way, a user can restore specific emails to the production environment in a quick and efficient manner.
1 . A method for restoring emails comprising:
creating an emulated Exchange environment that emulates a production Exchange environment;
restoring an EDB to the emulated Exchange environment from a backup that was created from an EDB in the production Exchange environment;
creating a full-text index for each of a number of mailboxes in the EDB that was restored to the emulated Exchange environment;
retrieving a particular email from the EDB that was restored to the emulated Exchange environment; and
restoring the particular email to the production Exchange environment.
2 . The method of claim 1 , further comprising:
querying at least one of the full-text indexes to produce a result set; and
obtaining an identifier of the particular email from the result set, wherein the particular email is retrieved using the identifier.
3 . The method of claim 1 , wherein creating a full-text index for each of a number of mailboxes in the EDB that was restored to the emulated Exchange environment comprises:
for each of the number of mailboxes, accessing the EDB to retrieve each email in the mailbox, at least some of the emails including content that is not formatted as plain text;
for each accessed email:
converting content of the email that is not formatted as plain text into plain text;
creating an indexing request that identifies a full-text index corresponding to the mailbox and that includes the content of the email in plain text format; and
submitting the indexing request to cause the content of the email to be stored in the full-text index.
4 . The method of claim 3 , wherein the content that is not formatted as plain text comprises a body of the email.
5 . The method of claim 3 , wherein the content that is not formatted as plain text comprises an attachment of the email.
6 . The method of claim 3 , wherein the content of the email is included in the indexing request as name/value pairs.
7 . The method of claim 6 , wherein the name/value pairs include an identifier of the email that is employed within the EDB to uniquely identify the email within the EDB.
8 . The method of claim 7 , wherein the particular email is retrieved from the EDB using the identifier.
9 . The method of claim 6 , wherein, for any email that includes an attachment, the indexing request is structured to cause the content of the attachment to be stored separately from but hierarchically associated with the content of the email.
10 . A recovery manager for restoring emails comprising:
an emulated Exchange environment that emulates a production Exchange environment and that is configured to interface with a data protection server to cause a backup of the production Exchange environment to be restored into the emulated Exchange environment, the backup including an EDB;
an indexing component configured to generate full-text indexes for mailboxes contained within the EDB once the EDB is restored into the emulated Exchange environment; and
a recovery console configured to query the full-text indexes to identify particular emails, to obtain the particular emails from the EDB in the emulated Exchange environment, and to restore the particular emails obtained from the EDB in the emulated Exchange environment into an EDB in the production Exchange environment.
11 . The recovery manager of claim 10 wherein the recovery console obtains the particular emails by employing identifiers of the particular emails that were obtained from the full-text indexes.
12 . The recovery manager of claim 10 , wherein generating full-text indexes comprises converting non-plain-text portions of emails or attachments into plain text.
13 . The recovery manager of claim 10 , wherein generating full-text indexes comprises submitting indexing requests that include content of emails in name/value pairs.
14 . The recovery manager of claim 13 , wherein the name/value pairs include a pair for a body of an email with the content of the body in plain text format and a pair for content of an attachment with the content of the attachment in plain text format.
15 . The recovery manager of claim 14 , wherein the name/value pairs include a pair for an identifier of an email that is employed within the EDB to uniquely identify the email.
16 . The recovery manager of claim 15 , wherein querying the full-text indexes to identify particular emails comprises retrieving the identifiers of the particular emails from corresponding name/value pairs, and wherein obtaining the particular emails from the EDB in the emulated Exchange environment comprises specifying the identifiers of the particular emails in one or more calls to an API for accessing the EDB.
17 . The recovery manager of claim 10 , wherein the indexing component comprises:
a database worker pool that is configured to launch a number of database mailbox enumerators, each database mailbox enumerator being configured to employ a database controller to access a particular mailbox within the EDB to retrieve emails from the particular mailbox, each database mailbox enumerator being further configured to convert each email into email data that is in plain text format; and
an index writer pool that is configured to launch a number of index writers, each index writer being configured to receive the email data from a corresponding database mailbox enumerator and to generate one or more indexing requests for storing the email data in a corresponding full-text index.
18 . A method for enabling individual emails to be restored, the method comprising:
creating an emulated Exchange environment that emulates a production Exchange environment;
restoring an EDB to the emulated Exchange environment from a backup that was created from an EDB in the production Exchange environment;
retrieving, from each of a plurality of mailboxes stored in the EDB restored to the emulated Exchange environment, each email stored in the mailbox;
converting content of a body or of an attachment of at least some of the emails into a plain text format;
for each mailbox, generating one or more indexing requests for storing the emails of the mailbox in a full-text index, the one or more indexing requests including content of the emails represented as name/value pairs where the value of each name/value pair is in plain text format; and
submitting the one or more indexing requests for each mailbox to thereby cause a full-text index to be created for each mailbox.
19 . The method of claim 18 , further comprising:
receiving a request to query at least one full-text index; and
returning results of the query, the results including an identifier employed within the EDB to uniquely identify a particular email.
20 . The method of claim 19 , further comprising:
employing the identifier to retrieve the particular email from the EDB in the emulated Exchange environment; and
restoring the particular email to an EDB in the production Exchange environment.