1)What is an Oracle Block Volume?
Persistent block level storage that uses the iSCSI protocol and can be dynamically attached to any instance.
2)How long is data retained on a block volume?
Data is retained until the volume is reformatted or deleted.
3)How are block volumes attached to an instance?
Block volumes are attached with the iSCSI protocol
4)What are the performance limits of a single Oracle Cloud Infrastructure block volume?
Up to 25,000 IOPS
Up to 320 MBPS throughput Sub-millisecond latencies
5)What is the maximum number of OCI block volumes that can be attached to a compute instance?
32 volumes per compute instance.
6)What are the OCI Storage options?
— Local NVme SSD
— Block storage
— File storage
— Storage Gateway
— Data transfer service
7)Name two types of volumes used in OCI.
8)What steps do you follow to move a block volume to another instance
1. Unmount the drive from the initial instance
2. Terminate the iSCSI connection
3. Attach it to the second instance
4. Connect and mount the drive to the second instance
9)Name the features of block storage
–Can be detached and attached to a new compute instance
–Data at rest is always encrypted
–Service is local to Availability Domain
–Backup to regional object storage
–New volumes can be created from those backups
–Backed by enterprise grade storage
10) What is the rated IOPS of OCI Block storage?
60 IOPS/GB , up to 25,000 IOPS
11) What are the two block volume attachment methods?
12) Name 5 Block storage characteristics?
1. NVMe – Non Volatile Storage Media Express
2. Fast Restore (< minute) regardless of volume size
3. Fast Backup (15 Minutes for 1TB Volume)
4. iSCSI protocol to connect to compute instances
5. Data is encrypted at rest, including backups
13) Name three methods for managing block storage
2. REST API
14) What are the four block volume backup policies?
15) What is Bronze Backup?
Monthly incremental backup at midnight on the first day of the month with a 12 month retention period
Yearly full backup at midnight January with a 1 1/2 year retention period
16) What is Silver Backup?
Weekly incremental backup at midnight Sunday with a 4 week retention period.
Plus Bronze Backup
17) What is Gold Backup?
Daily incremental backup at midnight. 7 day retention period.
Plus Silver Backup
18) Where are block storage backups stored?
19)Where can block volume backups be restored?
Restored to any Availability Domain within the same region
20)How long it takes for a restore from backup?
Less than a minute
21)Can block volume backups be restored to another region?
No. But you can use the cross-region backup copy feature to copy your existing block volume backups to another region that you have access.
22)Can I restore a backup to a different size volume?
Yes. up to 32 TB volume size.
23)What is a block volume clone?
A point-in-time deep copy of a source volume taken directly without a backup.
24)Characteristic of block volume cloning
1. Can only be created within the same region, AD, and tenant
2. Can be created between compartments
3. Can be attached and used as soon as state changes to available
25)What are the two data transfer options for OCI?
Data Transfer Appliance – 150TB per appliance
Data Transfer Disk – individual hard drives
26)What is CHAP?
Authentication scheme used by Point-to-Point Protocol (iSCSI) servers to validate the identity of remote clients. CHAP periodically verifies the identity of the client by using a three-way handshake.
27)What is the OCI default block volume size?
28)What are two Object Storage Resource limits?
One Object storage namespaces per root compartment
2k is the maximum size of object metadata
29)What are the minimum and maximum block volume sizes for OCI Block Storage?
50 GB minimum
32 TB maximum
30)How do you move a block volume to a different availability domain?
Block volumes can be backed up and restored to any Availability Domain within the same region
31)What is paravirtualized block volume attach?
VM utilizes hypervisor APIs to access remote storage directly as if it were a local device.
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