EMC Data Domain

                 Data Domain Corporation was an Information Technology company from 2001-2009 specializing in target-based deduplication solutions for disk based backup.[1] Since its acquisition by EMC Corporation in 2009, Data Domain was founded by Kai Li, Ben Zhu, and Brian Biles.[2] Chief Architect Hugo Patterson joined 3 months after initial funding. The first product revenue was in the beginning of 2004.

                 In June 2009, EMC Corporation announced their intention to acquire Data Domain Corp for $2.4B, outbidding NetApp's previous offer.[5] In July, the two companies reached definitive agreement regarding the acquisition. Since then, Data Domain systems have been a product line brand within the EMC Core Technologies portfolio. According to IDC, EMC in 2014 captured 62.3% share of the market for purpose-built backup devices worldwide. The majority of this share was from Data Domain product revenue.

Domain systems have since significantly surpassed this capacity and speed:

	DD2200	DD2500	DD4200	DD4500	DD7200	DD9500
Logical Capacity	40-860 TB	1.3-6.6 PB	1.8-9.4 PB, 3.7-18.9 PB*	2.8-14.2 PB, 5.7-28.5 PM*	4.2-21.4 PB, 8.5-42.8 PB*	8.6-43.2 PB, 17.2-86.4 PB*
Usable Capacity	Up to 17.2 TB	Up to 133 TB	Up to 189 TB, Up to 378 TB*	Up to 285 TB, Up to 570 TB*	Up to 428 TB, Up to 856 TB*	Up to 864 TB, Up to 1.7 PB*
Speed	3.8 TB/hr	5.6 TB/hr	10.6 TB/hr	10.6 TB/hr	12.6 TB/hr	27.7 TB/hr
Speed with DD Boost	4.7 TB/hr	13.4 TB/hr	25.6 TB/hr	25.6 TB/hr	28.3 TB/hr	58.7 TB/hr

High-Speed Deduplication

The EMC Data Domain Operating System delivers industry-leading speed and efficiency through variable-length deduplication. With performance up to 58.7 terabytes per hour, organizations can meet the most challenging backup windows while reducing backup and archive storage requirements by 10 to 30 times, making disk a cost-effective alternative to tape.

Seamless Integration

DD OS enables EMC Data Domain systems to integrate seamlessly with existing infrastructures including leading backup, archive, and enterprise applications. A Data Domain system can protect the entire enterprise including backup for Oracle, Microsoft, VMware, IBM i, open systems, big data and mainframe environments as well as file and email, database, enterprise content management, and virtual machine archiving.

Network-Efficient Replication

With the DD OS, organizations can replicate backup and archive data off-site faster, with minimal bandwidth for safe, tape-free disaster recovery. Data Domain systems provide flexible replication topologies to optimize your backups such as full-system mirroring, selective, bidirectional, many-to-one, one-to-many, and cascaded.

Reliability and Security

The Data Domain Data Invulnerability Architecture is core to DD OS and is built into every system, providing the industry’s best defense against data integrity issues. Inline write-and-read verification, continuous fault detection, and self-healing ensure that backup and archive data is accurately stored, retained, and recoverable or accessible throughout its lifecycle on a Data Domain system. Combined with the ability to meet compliance regulations and security requirements, no other storage system provides this level of protection.

Cloud Readiness

DD OS provides secure multitenancy, which delivers data isolation for enterprises and service providers looking to deploy Data Domain systems in a private or public cloud. With secure multitenancy, a Data Domain system logically isolates tenant data, ensuring that each tenant’s data is only visible and accessible to them. Multitenant management and monitoring enables chargeback, trending, and tenant-level reporting.

Why Data Domain:

•       Less disk to resource, less to manage

–      CPU-centric deduplication

–      Inline

–      Green

•       Simple, mature, and flexible

–      Simple, mature appliance

–      Nearline tier: any fabric, any software, backup or nearline applications

•       Resilience and disaster recovery

–      Storage of last resort

–      Cross-site global compression: data center or remote office

Note : For more information you can check with Data Domain Documents on EMC sites.

Networker Versions Cumulative fixes

Today I have provide details explanation of Networker Versions Cumulative fixes and contains the cumulative fixes.


Note: This info just help you to find the details all other details will find on EMC site.


NetWorker 8.0.2.1 Build 242
 
·         Starting operation... 5 (percent) when clicking the Browse magic wand to the right of Save set: in NetWorker 8.0.1.4.
·         nsrsnmd still core dumps during tape relabel operations with NDMP devices with NW147337/NW146938 fix and glibc update.
·         nwrecover core dumps during restore on Linux.
·         Lockbox issues after cluster switch. The lockbox stable value threshold was not met because the system fingerprint has changed.
·         The VTL is not properly licensed *  Errors when modifying or configuring jukebox in NetWorker 7.6.3.7 with Enterprise license.
·         Clone job in sessions window in NMC changes from cloning session to recover session and is not removed by NMC restart.
·         Unable to recover NetApp NDMP backup taken with device block size set to 256KB in NetWorker 8.0.1
·         Unable to recover from NDMP backups created with NetWorker 8.0.0.4

NetWorker 8.0.2.2 build 247
 
·         VDDK 5.0 U2 not present in NW 8.0.2.0 despite being listed in release notes.
·         gstd cores when adding Avamar server to the NMC Enterprise list.
·         During VADP backup with CBT feature, incremental backup always failed if there was a file name with multi byte character.
·         NetWorker deleting Bootstrap savesets from disk vols (original and clone) after touching "force_bootstrap_removal_from_disk".

NetWorker 8.0.2.3 build 253
 
·         nsrd RAP critical Error encountered while re* signing lockbox; The system hostname key is missing from the lockbox.
·         Savegroups neglect group parallelism; run with a value of 65535.
·         Max sessions attribute restricting the number of authorized sessions following upgrade to 8.0.1.4.
·         Save uses 100% CPU for Avamar backups.
·         NMC 8.0.1.4 unable to drag and drop clients created via nsradmin script.
·         Large data discrepancy between NMC reports and mminfo outputs.
·         VADP Restore from Tape is Hung after RegisterVM task in vCenter.
·         NetWorker is not honoring clone storagenode restrictions with DDboost when mediatype attr is set for the destination clone pool.

NetWorker 8.0.2.4 build 258
 
·         A VM recover in a clustered VM setup with shared RDM disk, results in the shared VMDK being deleted during restore
·         NW client LGTOnw.clnt.rte could not be installed in AIX 6.1 08 SP3
·         nsrexecd coredump on HP* UX ia64 after upgrading to NetWorker 8.0.1.2
·         Unable to autoconfigure SAS attached MSL 0896 library with LTO5 driver

NetWorker 8.0.2.5 Build 267
 
·         Pool Max Parallelism is not honored for tape devices
·         The client wizard for modification of proxy host will add "nsrvadp_save" in backup command field
·         DD devices unexpectedly unmounted under high load
·         nsrd core dump on Linix86w server running NetWorker 8.0.1.6
·         Storage Node property update 'AFTD allowed directories' fails with conflict when more than 2 directories used * *  esg 173807
·         Since upgrading to 8.0.2.2 customer has noticed severe slow down in backup performance and backups timing out *  esg 173824
·         DDboost device target and max session not honored
·         GSTD logging errors received incorrect job size
·         NW client LGTOnw.clnt.rte could not be installed in AIX 6.1 08 SP3
·         A lot of backups fail because 'nsrd RPC critical Unable to accept client connection limit reached (2047)

NetWorker 8.0.2.6 build 273
 
·         nsrd core dumps with NULL clone pool request in broker.c:device_available()
·         Storage Node property update 'AFTD allowed directories' fails with conflict when more than 2 directories used
·         Checking resource types in the RAP database process is very slow.
·         Active Directory users logged in to the NMC loses NetWorker privilege

NetWorker 8.1.0.2
 
·         NetWorker client package cannot be installed on AIX
·         NetWorker is not honoring clone storagenode restrictions with DDboost when * attr is set for the destination clone pool.
·         Pool Max Parallelism is not honored for tape devices
·         DDboost device target and max session not honored
·         Active Directory users logged in to the NMC loses NetWorker privilege
·         A lot of backups fail because 'nsrd RPC critical Unable to accept client connection limit reached (2047)'
·         NMC 8.0.1.4 unable to manipulate client resource fields when created via nsradmin script
·         GSTD logging errors received incorrect job size

NetWorker 8.1.0.3
 
·         analysis of core dump of nsrjobd
·         nsrd core dump on Linix86w server running NetWorker
·         Checking resource types in the RAP database process is very slow.
·         DD devices unexpectedly unmounted under high load
·         nsrclone loops on *  Error: nonexistent cloneid [from NW151844]
·         The client wizard for modification of proxy host will add "nsrvadp_save" in backup command field

 
NetWorker 8.1.0.4 build 227
 
·                     nsrd core dumps with NULL clone pool request in broker.c:device_available()
·         Populating repository operation fails for 32* bit package of NW8.1
·         VADP backup fails with Windows 2003 proxy host and NW 8.1
·         nsrd looping on "failed to retrieve ssid when building clone rlist"
·         Storage Node property update 'AFTD allowed directories' fails with conflict when more than 2 directories used
·         The saveset defined with multi* byte character is garbled in savegrp.log/messages on Windows

NetWorker 8.1.0.5
 
·         NetWorker deleting not-expired bootstrap savesets from disk vols after touch "force_bootstrap_removal_from_disk"
·         NSM for NMDA 1.6 backup failed
·         nsrvadp_recover.exe crashes on restore of a VM
·         Clients created on a Linux server, using all upper case, create a nested directory in the index directory
·         Restarted savegroup never completes - clients with skip schedule hang
·         jobkill is not able to kill active jobs
·         nsrsnmd Unable to initialize device : Request for reserved connection failed for device
·         Downgrade from AD to local auth causes user groups not to work

NetWorker 8.1.1.3 Build 289
 
·         GST backup is being marked as failed since upgrading server to 8.1.0.5
·         NSM for NMDA 1.6 backup failed
·         NetWorker deleting not-expired bootstrap savesets from disk vols after touch "force_bootstrap_removal_from_disk"
·         Null parameter dialog box appears when clicking on a report in chart view where parameters in chart selector are modified
·         NMC Group status reports success despite failed NetWorker backup with input/output error
·         Preclnt save failure leaves tmp file and causes subsequent backups to fail if no manual clean performed
·         gstclreport.bat returns null
·         nsrvadp_recover.exe crashes on restore of a VM
·         Clients created on a Linux server, using all upper case, create a nested directory in the index directory
·         jobkill is not able to kill active jobs
·         nsrsnmd Unable to initialize device : Request for reserved connection failed for device
·         nsrsgrpcomp Group_name -R fails to generate report for requetsed jobID
·         Max sessions attribute restricting the number of authorized sessions post upgrade to 8.0.1.4
·         Downgrade from AD to local auth causes user groups not to work
·         NMM 24sp1 Fails to restore AD LDS (ADAM) Does not Display Active Directory Restore
·         NetWorker is not honoring clone storagenode restrictions with DDboost when mediatype attr is set for the destination clone pool

NetWorker 8.1.1.4 Build 297
 
Impossible to connect to NW server or distribute NMC config after upgrade to 8.1.0.4 from 7.6.3
savegrp does not honour -q option
NMC does not auto update space usage for Data Domain hosts.
Scheduled clone resource is re-enabled silently if disabled when clone job is in progress.
REGRESSION: Unable to label new VTL tapes on AIX SN after the upgrade to v8.0.x
Savegroup status not updated properly when a non-critical volume is failed during a DR Backup
Archiving: public archives is disabled but all users can retrieve files they don't own
When selecting multiple clients via NMC to update specific fields error is reported and update fails
DDS status messages incorrect after upgrade to NW 8.0.2/related BUG NW144497
recover cores during a browse of an NDMP saveset's index when trying to change time or list the directory contents
NSM backup of DB2 fails due to nsrd/nsrmmdbd issues on AIX
on reinstall server losses it LDAP configuration
 
NetWorker 8.1.1.5 Build 306
 
·         nsrim -X does not delete expired saveset on DDBOOST devices
·         Windows 2003 recoveries with NW 8.1.1.1 does not recover registry components together
·         Immediate clone hangs if schedule set to skip
·         nsrjobsd creating coredumps on 8.1.0.4
·         VBA timing policy discrepancies
·         Expired Savesets not deleted from NetWorker Cloud Device
·         Save set all-local doesn't work on Solaris 11 non-global zone backup
·         'NSR Group' left as "status: running" when savegroup finished with "exited with return code 2"
·         Tapes getting marked Full prematurely with message " posix async write: Error 0"
·         nsrexecd fails to start Error: nsrexecd is already running
·         VADP: Restored VM from Image Level backup is not bootable
·         Nsrvba_save daemon intermittently dumps core during backup through a Linux server
·         Tape drives does not go to service mode even after maximum consecutive error reached
·         Include IBM Silo Support in NetWorker 8 versions for all platforms including AIXPower as per NetWorker Compatibility Guide.
·         PSR: nsrclone daemon cored
 
NetWorker 8.1.1.6 build 321
 
·         CONCURRENT CLONING related fixes NW155003, 186031(and 186065), NW157911, NW157018, NW156906
·         clientpush: Add to repository is not working for AIX packages
·         sometime some storage nodes does not mount anymore volumes since upgrade to NetWorker 8.0.2.3
·         Windows 2003 Cluster drive configuration not detected after upgrade from 8.0.1.6 to 8.1.1.2 client
·         jobd is getting duplicate resid error when probe based backup run
·         nsrjobsd creating coredumps on 8.1.0.4
·         Completed group shows with status 'Interrupted' in NMC Group Details window
·         savegrp with probe based backup hangs intermittently, can only be killed with kill -9
·         NetWorker: Unable to save data or print from the "Show Messages" Window.
·         BBB - File level rename on recovery option doesn't work.
·         NetWorker 8.0.2.3 nsrindexd core dumps on Linux 64bit server.
·         Unresponsive nsrsnmd on NW sever causes NetWorker server hung

NetWorker 8.1.1.7 Build 333
 
·         NetWorker hangs daily during night for past several months
·         Recover GUI in NMC recovers only one file when `Search` is used
·         Various NSM performance issues on 11DA "large" DB2 restores
·         Various NSM performance issues on 11DA "large" DB2 backups
 
NetWorker 8.1.1.8 Build 349
 
·         NSM nsrbragent dumps core during SAP restore and session hangs
·         Unable to backup cluster drives since upgrading to NW 8.0.1.5
·         VADP Parser crash with heap corruption
·         with Dynamic MMDs enabled, NSRD assigns NSRMMDs while they are being shutdown, causing clones (backups as we
·         Unable to restore any file from Windows 2012 dedup volume
·         Allow recovery of VMs which have non ASCII characters in annotation notes
·         Unable to delete volumes residing on a NetWorker 7.6.5.x server via NMC version 8.1.x
·         NMC GUI on Policy group showing abort status even when Policy details show backup completed
·         nsrmmd cored
·         Show details for Archive Requests throws error dialog irrespective of Passed/Failed Status.
 
NetWorker 8.1.1.9 build 360
 
·         nsrmmd core dump
·         BBB recovered in NMC not working while part of files are deleted in a directory
·         nsrexecd has been crashing every night.
·         Server holds the connections to Clients leading to connection limit getting hit on the Server host(Auditlog feature).
·         NetWorker server is unresponsive When AFTD devices passed full threshold Networker
·         NetWorker client agent install on linux using --relocate not working
·         NetWorker: unable to recover CIFS save sets from the RECOVER GUI with error: "not in index"
·         Resource Group offline sequence hangs in an AutoStart high availability environment
·         NSRserver service transitions to a failed state in an AutoStart high availability environment
·         nsrsgrpcomp does not work with virtual server name
·         Savegroup completion report of an all successful restart job, wrongly reports a number of clients as failed

NetWorker 8.1.2.1 build 423
 
·         Unable to exclude the scsi path when scanning for devices
·         nsrd NSR critical Unable to update the volume cache for volume
·         nsrsnmd.exe Application error on Windows - most occurrences in cloning and staging
·         Fails to recover older savesets which are backed up using 7.6.x with the latest Build 8.X. and 8.1.X
·         nsrclone command not attributing correct values to ssid's when -m, -w and -y flags specified on command line.
·         DD devices getting unmounted during savegrp execution.
·         BBB Recovery from NMC recover wizard is failing with error Unable to mount the save-set ID 'SSID' for recovery""
·         Clientpush repository add operation is failing on Windows server for HP media kits
·         Local user loses privilege after configuring external authentication
·         nsrexecd coredump on HP-UX ia64 using BSAFE libraries (switch to openssl)
·         Unable to recover namedpipes through Mac recover GUI
 
NetWorker 8.1.2.2 build 432
 
·         auto inventory of HP MSL libraries does not work in 8.1
·         RedHat Linux on server reboot does not run NetWorker shutdown scripts.
·         nsrdr does not show appropriate error message when the NW software is installed on a different location during DR exercise
·         Recovery Fails with Block size errors
 
NetWorker 8.2.0.2  Build 488
 
·         nsrarchive does not produce log/notification output in NW 8.x
·         nsrsnmd.exe Application error on Windows - most occurrences in cloning and staging
·         nsrd NSR critical Unable to update the volume cache for volume
·         NMC DST Daylight Saving Time issue
·         Lockboxes are not availables with every failover on Linux server cluster
·         BBB recovered in NMC not working while part of files are deleted in a directory
·         DD devices getting unmounted during savegrp execution.
·         NetWorker server is unresponsive When AFTD devices passed full threshold Networker
·         Fails to recover older savesets which are backed up using 7.6.x with the latest Build 8.X. and 8.1.X
·         with Dynamic MMDs enabled, NSRD assigns NSRMMDs while they are being shutdown, causing clones (backups as we
·         NW161015 // Aborted VSS Fileset reported as competed in the media DB
·         Savegroup completion report of an all successful restart job, wrongly reports a number of clients as failed
·         NMC GUI on Policy group showing abort status even when Policy details show backup completed
·         Unable to exclude the scsi path when scanning for
 
NetWorker 8.2.0.3 Build 495
 
·         auto inventory of HP MSL libraries doesnt work in 8.1
·         RedHat Linux on server reboot does not run NetWorker shutdown scripts.
·         VADP: nsrvadp_recover cannot recover full VM: Error writing to VMDK: 0 bytes written instead of n bytes.
·         directed nsrretrieve from another host requires NSR resource administrator attribute privileges
·         nsrclone command not attributing correct values to ssid's when -m, -w and -y flags specified on command line.
·         NetWorker client agent install on linux using --relocate not working
 
NetWorker 8.2.0.4 Build 506
 
·         Library getting down after upgraded from 8.0.1.1 to 8.1.0.2 even to 8.1.0.3
·         nsrvadp_recover is crashing for the libasm.dll on 8.1.1.8 proxy host
·         DDBoost devices silently unmount and then report Expected volume 'volname.volname', found volname message
·         Save set "all-zfs" does not perform virtual synthetic full backups
·         Incorrect display of time in NMC at DST start and end
·         Skips of scheduled clone jobs show as interrupted in the NW GUI after upgrading to NW 8.1.1.6
·         nsrsgrpcomp does not work with virtual server name
·         nsrdr does not show appropriate error message when the NW software is installed on a different location during DR exercise
·         Jukebox unusable after a bootstrap save
·         Recovery Fails with Block size errors.
·         nsrmmd cored
·         Incorrect recovery progress on Oracle recovery
·         nsrd hangs up to 1 min waiting for nsrjobd call send_ssninfo_to_jobd hostname:bkpsrva0
 
NetWorker 8.2.0.5 Build 510
 
·         8dot3name setting is lost after BMR using BMR_8.1.0.199 or above
·         Expired cleaning tape (0 uses left) is being used for cleaning
·         Cannot label blank tape after upgrade to NetWorker version 8.1 on AIX - different than NW156909
·         nsrexecd erroneously creates nsrauth attributes when gethostname() returns variants of "localhost"
·         nsrstage is extending clretent unexpectedly
·         Continuation of NW161660 - nsrd cores frequently
·         Failed recover deletes existing original file or folder on file system
·         VADP CBT incr backup fails when Czech filename is encountered
·         Updated NMC 8.2.1 to use Apache httpd 2.2.27
·         Rolling restart of NSRSNMD on Windows host
 
NetWorker 8.2.0.6 Build 517
 
·         Unable to set extended attribute 'security.selinux' Operation not permitted
·         NW00162153-NW162153:Percentage completion for successfully cloned ssids are showing less than 100% on NMC
·         jobquery core during DPA 6.1 data collection with NetWorker 8.1.0.5
·         nsrd/nsrmmdbd dead-lock during relabel
·         Avamar does not delete all savesets even though nsravamar.raw shows them deleted
·         (ETA) DATA LOSS - 0kb files on DDBoost device
·         NetWorker server client parallelism silently changed to 12 after a restart when parallelism configured to <1
 
NetWorker 8.2.1.1 Build 753
 
·         Browseable recover: expand_check() function experiences massive delays after upgrade to 8.1.x from 7.x on AIX clients
·         savepnpc commands with level skip hangs backup
·         Unable to set extended attribute 'security.selinux' Operation not permitted
·         jobquery core during DPA 6.1 data collection with NetWorker 8.1.0.5
·         nsrd/nsrmmdbd dead-lock during relabel
·         NW:Avamar: Avamar does not delete all savesets even though nsravamar.raw shows them deleted
·         8dot3name setting is lost after BMR using BMR_8.1.0.199 or above
·         Expired cleaning tape (0 uses left) is being used for cleaning
·         Every time a backup starts for a UNIX/Linux client, NetWorker queries LDAP for root account
·         Failed recover deletes existing original file or folder on file system
·         NMC is not displaying the 'enabled/disabled' field correctly after upgrade to 8.1.1.3
·         Inconsistency on used space reported on NMC, mminfo and Disk manager for AFTD device
·         NetWorker server client parallelism silently changed to 12 after a restart when parallelism configured to <1
·         snmd will not come up on slow systems owing to too short snmd poll timeout
·         Percentage completion for successfully cloned ssids are showing less than 100% on NMC
 
NetWorker 8.2.1.2  Build 764
 
·         Copy of an existing clonejob in the NetWorker GUI always sets the Include save sets from the previous days to 1
·         NDMP Single file restores performed on FEB 23rd ended up restoring entire root (/) file system
·         BBB Recovery from NMC recover wizard is failing with error "Unable to mount the save-set ID 'SSID' for recovery"
·         BBB incr backups cause synth_fulls which run out of connection ports
·         Storage node load balancing not working as expected
·         Networker server hung after stop the nsrexecd (nsrsnmd) on remote storage node
·         NetWorker failover on RedHat Linux cluster when nsrd does not respond to rpcinfo -t
·         Error message when trying to access help menu from nwuser "HTML file was not found"