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EBS&nstance Store (3MP) (2 type (EBS (feature (Analogy to external…

- - - - Analogy to external drive
        
        to create storage volume
        
        once attached, create file system, or run a DB
        
        use as a block device
      - 2 type
        
        SSD
        
        2 type
        
        general purpose SSD
        
        used case
        
        For Most workload
        
        Max IOPS is 16,000 IOPS per volume or 250MiBs per volime
        
        Provisioned IOPS SSD (io1): Database
        
        sustainable IOPS
        
        Used case
        
        2 more items...
        
        read randomly
        
        Using IOPS to benchmark the performance
        
        IOPS capacity depend on size of your volume
        
        HDD
        
        feature
        
        spindler, read sequentially
        
        Use MIB to benchmark performance
        
        CAn't be boot volume
        
        2 type
        
        throughput Optimized HDD(St1)
        
        M: hugh: bigData, warehouse, log process
        
        Consistent, fast throughput
        
        Cold HDD(sc1): Infrequent access
        
        Used case
        
        backup, infrequent access
        
        lowest cost
        
        Magnetic
        
        can be boot volume
      - replicate EBS automatically with single AZ
      - USed case: : Create file system, run DB and O/S
      - persstent ?
        
        instance terminated
        
        root volume
        
        deleted by default when intance terminated
        
        Non root volume
        
        Not deleted by default when instance terminated
        
        start /stop
        
        not deteled
    - - Not require to detach the volume
      - type
        
        Increase its size
        
        Change volume typ
        
        Adjust IOPS performance
    - - detach
        
        After detach, you are still CHARGE for volume storage if storage amount exceeds the limit of the AWS Free Tier. You must DELETE a volume to avoid incurring further charge (M : DIVOICE)
        
        1.
        
        1.
        
        detach from console . If EC2 is running, must first unmount (using CLI)
        
        Terminte the Ec2
        
        definition : Means disconnect
        
        detach can REATTACH the volime to enable fast recovery
        
        Must stop your EC2
      - Attach
        
        defintion
        
        Attach means EXPOSE as a block device. .
        
        can attach 1 or more EBS volume
        
        Ec2 must be in same AZ
        
        If EBS is encrypted, must check whether the whether instance type support it
        
        DTDTDT: Multiattach
        
        EBS Multi-Attach enables you to attach a single Provisioned IOPS SSD (io1) volume EBS to up to 16 Nitro-based instances
        
        Useful in app within CLUSTER environment
        
        snapshot can taken when it is attached
        
        Mount
        
        You can format(use CLI) the volume with any file system and then mount it (in Linux using CLI)
      - Create
        
        Min size in the slide is refer to GP. but for other min size of EBS type is diff (refer to slide)
        
        Create volume in the same AZ where your EC2 is residing
        
        3 Method to create EBS volume
        
        Create a volume then attach to EC2
        
        Create EBS during LAUNCH
        
        Create EBS from RESTORE the snapshot
      - detach
        
        EBS Volume can be detached from the stopped instance, and attached to a running instance, modified, detached from the running instance, and then reattached to the stopped instance
    - - defintion
        
        to backup your data
      - feature
        
        Incremental bckup
        
        Means those block that have changes will be save after yr most recent snapshot
        
        those block without changes will not be save
        
        snapshot size can smaller than actual volume
        
        can restore your data
        
        Constrain in the region
        
        region
        
        so if u want your EC2 in Korea to use snapshot in SG, then has to copy
        
        can encrypt
        
        an uncrypted volume during snpashot
        
        can encrypt during copy
        
        restore the volume is auto encrypted if the snapshot is encrypted
        
        All data transfer also will be encrypted
        
        can do multi-volume snapshot on single Ec2
        
        Is taken when the EBS is atached
        
        STORE IN S3
        
        and S3 is copied redundantly in > 3 AZ within a region
        
        Constrain to region
        
        can copy between region
        
        lazy loading
        
        data from snapshot in S3 is lazy loaded.
        
        Means not all data are loaded
        
        if your Ec2 need to access the data, it will access it from S3 while lwhile still loading the data
      - snapshot ID
        
        Need to specify to used to create the volume
      - bill
        
        Only bill for CHANGE block
        
        Ex: If 5 GB consumed for last snapshot, will bill for 5GB
      - tier storage solution example (sysops)
        
        A.
        Set up an independent EBS volume where we can store daily backups and then copy these files over to S3, where we configure a bucket that has a lifecycle policy to archive files older than 10 days to AWS Glacier
    - - based on what you provision and not what u used
  - - - 0.Analog to your internal drive
      - It using SSD ONLY
      - Non-persistent
        
        when crash, and stop
      - slower, longer boot time
  - - - Install O/S
      - Mount it as volume
    - - 1 square contain 9 small
    - - Files are spread over many blocks.
      - Block-level incremental backups are faster because they do not have to back up the entire file each time. I
      - nstead they only backup new blocks or blocks that have changed since the last backup. Example of block storage solutions are Direct-Attached Storage (DAS) and network-based Storage Area Network (SAN). Common DAS protocols are ATA, SATA, SCSI, SAS, and USB. Common SAN protocols are iSCSI and FCoE. With block-level storage, a logical unit number (LUN) can be treated as a physical drive. Files are divided into many blocks and if any identical blocks are found, redundant copies are eliminated.