RAID 0 = greater I/O performance multiple volumes
RAID 1 = mirror two volumes for fault tolerance
RAID 5 and RAID 6 are not recommended for Amazon EBS
Storge classes
Performance
GP2/3 up to 16k iops
IO1/2 up to 64K iops. Io2 block express up to 256k iops (mission critical
RAID 0 + EBS up to 260k iops per instance
Volume types
Gp2/gp3 (SSD) price performance (boot volume 1gb-16 tb), 3000 iOPS, GP3 can increase iOPS without size change
balance
Io1 / io2 (SSD) low latency high throughput - more than 16k IOPS - max 64K for nitro EC2, up to 64TB + 256k IOPS
mission critical
Best for Transactional workloads, critical application that require IOPS
Sti1 (HDD) (no boot volume) - big data, streaming data, past
low cost frequently accessed data large consistent throughput
Sc1 (HDD)
lowest cost archive data\
AZ Specific, ec2 specific, volume network drive, snapshot to move AZ, need provision size
Can mount multiple volumes to one ec2, can create without attaching
Delete on termination – default yes for root volume, other volumes – no by default
up to 16 ec2 in the same AZ (io1/io2) – parallel read writes
Use EBS optimized EC2 type to increase performance
need to repartition the drive
no decrease the size (create another and migrate data)
copy cross region,
can use Data lifecycle manager for backup / snapshot automation
Snapshot archive (lower cost, long restore time)
Can set up “Recycle bin” for deleted snapshot
(FSR) from EC2 (not s3)
with KMS AES-256, snapshot encrypted, to encrypt: snapshot > encrypt> restore
Can set encryption by default at the region level
HW disk that can be attached to ec2 – I/O performance (ephemeral)