Module 1: Overview Flashcards
Ontap data management software
ONTAP 9
On premises - AFF/FAS, FlexPOD, ONTAP select
In Cloud - Azure, AWS, google cloud
Netapp data protection and security portfolio
High Availability - NVRM, HA, RAID, NetApp SyncMirror
Business Continuity - NetAPP snapmirror business continuity, Netapp MetroCluster
Backup and Archive - ONTAP snapshot feature, snapmirror, NDMP, Netapp snapcenter
DR - SnapMirror, SnapMirror Synchronous (SM-S), S3 snapmirror
Cloud based data protection - third party software, NetApp cloud volumes Ontap, NetApp BlueXP
Security and compliance - NSE, NVE, NAE, Cluster Peer encryption, IPsec over write encryption, Snaplock compliance
NetAPP management software for hybrid cloud infrastructure
Storage infrastructure management - Ontap cli, ONTAP system manager, Active IQ unified manager
Storage automation - modules for Ansible, active IQ unified manager REST API, ONTAP REST API
Unified control plane - BlueXP, Digital advisor, backup and recovery, copy and sync, Tiering
Application intergration - netapp snapcenter, Netapp Ontap tools for VMware vSphere
Snapshot Copies
A snapshot copy is a read-only, poin-in-time image of a volume
The image of a snapshot copy consumes minimal storage space and has negligible performance overhead
The NetAPP WAFL file system and metadata efficiently record changes and points to blocks on disk.
Old blocks remain in place, only the pointers move from the active file system to snapshot copies.
When you create a copy you keep the pointers.
Restoring data from a snapshot copy
When restored all snapshots copies after the restore point are destroyed.
Snapshot copies and data replication
snapshot copies are used in data replication for various purposes.
- create a baseline copy
- track incremental changes
- Resynchronize data after a DR even
- Restore data
Data consistency levels
File system consistency - NAS NFSv3/v4, SMB. SAN ext3 and ext4 extended filesystem, System level file server (SFS)
Application level. - Database application
VM level - Hypervisor (Hyper-V, VMware esxi)
Crash consistency versus application consistency
Crash
* Does not capture data in memory or any pending IO operation
* Creates a snapshot copy of all the files at the same time
* Is recommended for non-database applications like file servers and print servers
Application
* Captures all data in memory and all transactions that are in process
* Quiesces IO for a fraction of a second and at the same time takes a snapshot copy
* Is recommend for database management systems and applications
Replication Topologies
One or more data Center (local or remote copy)
Multiple data Center (fan-out copies)
Multiple data centers (cascades)
Multiple data centers (fan-in copies).
Intercluster networking
Requires intercluster LIFS and Intercluster network (WAN)
Each intercluster LIFs (source) can see/access every intercluster LIFs (target).
Cluster and storage VM peering
Creates a storage peer relationship between storage VM.
E.g. SVM1 in cluster A has a inter cluster relationship with SVM1 in cluster B
KCQ1 - if a data protection relationship is between clusters which path does replication data take?
Intercluster network
Intracluster network
Cluster interconnect
High-availability interconnect
Intercluster network
KCQ2 - How does the WALF file system minimise storage space and performance overhead?
Creates separate volumes for storing snapshot copies
Compresses snapshot copies to reduce storage overhead
Records only file changes since the lastest snapshot copy
Relocate old blocks to optimise storage space
Records only file changes since the lastest snapshot copy
KCQ3 - What is a snapshot copy in Netapp data protection solutions?
Writable image of a volume
Compress image of a volume
Scalable image of a volume
Read-only, point-in-time image of a volume
Read-only, point-in-time image of a volume
