EC2 Storage (EBS/Instance Store) Flashcards
Storage which is physically connected directly to a device at launch time only
Direct (local) attached storage (Instance Store)
Volumes are created and logically attached to a device over a network
Network Attached Storage (EBS)
Temporary storage is called
Ephemeral Storage
Permanent storage that lives past the lifetime of the instance
Persistent Storage
is EBS persistent storage
Yes
Storage volume presented to the OS as a collection of mountable and bootable blocks.
Block Storage
Can you boot off an EBS volume?
Yes
Storage is presented as a mountable file share, but is not bootable
File Storage
Storage of a collection of objects without the ability to be mountable, or bootable
Object Storage
persistent block-level storage service that you usually attach to your Amazon EC2 instances
Elastic Block Storage EBS
Can block storage be encrypted?
Yes by using KMS
Instances see block device and create file systems on the device
True
How many AZ is storage provisioned in?
One
How to backup Volumes?
Snapshots and create a volume from the snapshot
Does EBS replicate data across AZ?
No only within an AZ
How do you provide global resilience for EBS
Copy snapshots of volumes to another region
1 GB – 16 TB General Purpose SSD volume that balances price performance for a wide variety of transactional workloads
General Purpose SSD (gp2/gp3)
What can a gp2 burst up to?
3000 iops
Volumes larger than 1000 GB means the credit system isnt used and you always achieve baseline performance
True
Maxmium IO credits per second for volumes larger than 1000 gb
16000
storage used for boot volumes, low latency interactive apps, dev & test
gp2/gp3
storage volume that starts with 3000 IOPS and 125 MiB/s with the ability to purchase higher IOPS and mib/s
gp3
does gp3 have 4x faster max throughput vs gp2?
Yes 1000 MiB/s max
High performance SSD volume designed for latency-sensitive transactional workloads and I/O-intensive database workloads
io1
High performance SSD volume designed for business-critical latency-sensitive applications and workloads that require
sub-millisecond latency
io2
max throughput of io1/io2
64,000
max MiB/s of io1/io2
1000
Low cost HDD volume designed for frequently accessed, throughput-intensive workloads (throughput optimized)
st1 (throughput optimized)
Throughput-oriented HDD storage for data that is infrequently accessed or scenarios where the lowest storage cost is (cold hdd)
important
sc1 (cold hdd)
storage type which has small, random I/O operations
SSD storage
storage type for large, sequential I/O operations.
HDD storage
Does Instance store perform with more IOPS and throughput than EBS?
Yes
If you need persistence storage you should default to?
EBS
If you need resilient storage you should default to?
EBS
If you need storage isolated from instances you should default to?
EBS
If you need storage with super high performance you should default to?
Instance Store
If cost is a concern what storage you should default to?
Instance Store
If you need cheap persistence storage what EBS type should you use?
ST1 or SC2
If you need persistence storage balanced for throughput or streaming what EBS should you default to?
ST1
Can ST1 or SC2 be used as boot volumes?
No
If you need storage with IOPS up to 16,000 what should you default to?
GP2/3
If you need storage with IOPS up to 64,000 what should you default to?
IO1/2
Individual volumes combined together with the ability to reach up to 260,000 IOPS (max IOPS per instance)
RAID0 + EBS
If you need storage with IOPS larger than 260,000 what should you default to?
Instance Store
automate the creation of EBS snapshots
Amazon Data Lifecycle Manager (Amazon DLM)
Do EBS volumes support live configuration changes while in production without service interruptions
Yes
