10833479
Description
Flashcards by DJ Perrone, updated more than 1 year ago
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Created by DJ Perrone
about 9 years ago
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| Question | Answer |
| What are some different storage types? | - Virtual Storage - Cloud Storage - Data Warehousing - Data Archiving - SAN - NAS/FAS -VSAN |
| What are the different types of cloud storage? | - Private Cloud - Public Cloud - Hybrid - Community |
| What is a private cloud? | Owned and managed by one company for that company's use. - More control and security - More investment |
| What is a public cloud? | Provided by a third party. Gives up control and some security. You share space with others. |
| What is a hybrid cloud? | A combination of public and private. |
| What is a community cloud? | Owned and managed by a group of organizations for a common purpose. |
| What are 3 service categories of cloud storage? | - Infrastructure as a Service (IaaS) - Platform as a Service (PaaS) - Software as a Service (SaaS) |
| What is IaaS? | Infrastructure as a Service - Vendor provides hardware or data center. - The company owns the software (operating systems / applications) |
| What is PaaS? | Platform as a Service - Vendor provides hardware, operating system and infrastructure software - Company still manages system |
| What is SaaS? | Software as a Service - Vendor provides entire solution. - Includes OS, software and applications |
| What is data warehousing? | - Combining data from multiple databases or courses into a central location. - Data is processed into an understandable way |
| What are some security controls for data warehousing? | - Implement: - when extracting data from its source. - for data when it rests in staging area. - when moving data from staging to warehouse - when moving data from warehouse to data mart. |
| What measures should be taken when using data warehousing applications? | - Control metadata from being used interactively. - Monitor the data purging plan. - Reconcile data moved between the operations environment and the data warehousing. |
| What are the tiers of data archiving? | - Tier 1: Production Data, HA - Tier 2: Disaster Recovers, Short-Term Retention, Dev/Test - Tier 3: Tape backups for long-term retention |
| What is a SAN? | Storage Area Network. High capacity storage devices connected by high speed LAN using storage switch. |
| What are some advantages of SAN's? | - Scalable - Available. Perform maintenance without taking servers offline. - Sharing is easier, isolated network. - Easier physical security. |
| What are some security issues with SAN's? | - Fiber Channel provides no securiry against spoofing attacks. - Data is only as secure as OS |
| What is a NAS? | Network Attached Storage |
| What are some protocols used by NAS' | - NFS - CIFS - HTTP |
| What is a VSAN? | Virtual Storage Area Network - Logical division of a SAN. |
| What are some common storage protocols? | - iSCSI - Fiber Channel over Ethernet (FCoE) - NFS - CIFS |
| What is iSCSI? | Internet Small Computer System Interface - IP networking storage standard. - Encapsulated SCSI commands in IP packet. |
| What is FCoE? | Fiber Channel over Ethernet - Encapsulates Fiber Channel traffic within Ethernet frames. - Works at Layer 2 |
| What is NFS/CIFS? | Network Files System Common Internet File System |
| Which OS was NFS designed for? | Unix/Linux |
| Which OS was CIFS designed for? | Windows. - CIFS is a public version of Server Message Block (SMB) |
| What is multipathing? | The use of multiple physical or virtual network paths to storage device. - Meets CIA triad while providing fault tolerance. |
| What is a snapshot | A backup of data from point in time. |
| What is a full snapshot? | A full backup. |
| What is a read only snapshot and when is it used? | - Allows read write operations to continue - Used in mission critical environments. |
| What is a read-write/branching snapshot? | Creates a point in time version of data. |
| What is deduplication? | Removing redundant copies of same files. |
| What are 2 main methods of deduplication? | - Post Process: Deduplication is performed after data is written to storage device. Doesn't degrade I/O. - In-Line: Performed as data enters disk in real time. Takes longer but reduces initial disk footprint. |
| What is a DDP? | Dynamic Disk Pool - Distributes data across multiple disks. - A minimum of 11 drives must be used. |
| What are 2 elements of DDP? | - D-Piece: Contiguous 512MB block on physical disk. - D-Stripe: Each D-Stripe is made up of 10 D-Pieces. 8 D-Pieces are used for data, 1 for parity and 1 for algorithm called Q-Value. |
| What is LUN Masking/Mapping | Controlling asses to a LUN by hiding existence. |
| Where can you implement LUN Masking/Mapping? | - Host Bus Adapter (HBA) - Storage Controller Level - There is greater security at the Storage Controller |
| What is Host Bus Adapter (HBA) Allocation? | - Connects a computer to SAN - Have World Wide Names (WWN) that ID them like MAC addresses - Confining certain ports on the HBA to a certain zone. |
| What are different types of offside or multisite storage replication? | - Asynchronous - Synchronous - Point-in-time |
| What is asynchronous replication? | - Delayed replication - Less bandwidth that can handle high latency. - Used across longer distances. |
| What is synchronous replication? | - Provides near real-time replication - More bandwidth - Cannot handle much latency |
| What is point-in-time replication? | - Snapshot - Periodic replication but uses least bandwidth - Replicates only changes. |
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