14- just backups
what kind of backup plan do security experts recommend?
3-2-1 backup plan
which backup maintains a historical record of all changes made to data by constantly monitoring all writes to the hard drive - by creating a SNAPSHOT of the data which is essentially a series of REFERENCE MARKERS of data at a specific point in time
CDP continuous data protection
CDP continuous data protection
a more comprehensive backup that performs continuous data backups that can be restored immediately, thus providing excellent RPO and RTO times
diff backup
backs up any data that has changed since last full backup
incremental backup
backs up any data that has changed since last full backup or last incremental backup
backing up data involves 3 elements"
backup calculations, different types of data backups and off site backups
data backup
copying info to a diff medium and storing it on off site locations so that it can be used in an event of disaster
legal implications to off site backups
data sovereignity (data that was created in florida but stored in dublin is subject to laws in dublin)
which backup archive bit is not cleared after backup (set to 1)
differential backup
universal access
files backed up through online services can be made available to another computer
delayed detection
files copied to online server for up to 30 days before deletion
full backup
for recovery, a full backup is needed
differential backup
for recovery, the full backup and only last differential backup are needed
most secure off site backup facility
former salt mine in kansas. 45 stories beneath surface, 650 feet tall
which backup archive bit are cleared after backup (set to 0)
full and incremental
online or media based restore
if a file or entire comp must be restored, then it can be done online
recovery time objective RTO
length of time it will take to recover the data that has been backed up
concern with off site backups
location selection - because of distance
the 1 diff location in a 321 backup is referring to
off site backup
most orgs store their off site backups using ____
online cloud repository - using CDP to continuously backup data
many CDP products let users __ their own docs
restore
full backup
starting point for all backups
backup utilities
sw that can be used for backups and can internally designate which files have already been backed up by setting an archive bit in the properties of files
an archive bit set to 0 means
that the file has been backed up
auto continous backup
the backup sw sleeps while computer is being used and performs backups only when there is no user activity
incremental backup
the full backup and all incremental backups are needed to recover
RPO recovery point objective
the max length of time an org can tolerate btwn backups
3-2-1 backup plan
there should always be 3 diff copies of backups (not counting original data) on at least 2 diff types of storage media or devices and 1 should be stored at a diff location
an archive bit set to 1 means
this modified file now needs to be backed up
an ____ is 6 hours, this means that an org wants to be able to restore systems back to the state they were in no longer than 6 hours ago - to achieve you must make backups at least every 6 hours- any data created or modified btwn backups will be lost
RPO
which calc is the "age" of the data that an org wants the ability to restore in the event of a disaster
RPO recovery point objective
two elements used in the calculation of data backups
RPO recovery point objective RTO recovery time objective
a ____ of 2 hours means that data can be restored within that timeframe
RTO recovery time obj
