(B15) Storage part3 storage types -DAS, NAS, SAN, ISCSI

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Storage Types:

DAS - Direct Attached Storage
NAS - Network Attached Storage
SAN - Storage Area Network

DAS : Disk attached to server/PC
-store OS and Application
-more isolated

ex. internal HDD, SCSI Disk,SSD

NAS :
-Centralized Storage
-NAS is storage that is attached to a dedicated storage device
and accessed through network shares
-Easy to configure
-Not Enterprise solution
-slower
-cheaper than SAN
-Protocols: NFS,CIFS(SAMBA)
-Ethernet

-File level storage

SAN:
-Central Storage
-enterprise solution
-Costly than NAS
-Complex, Need specialized skills
-Faster access time
-Redundent -High avaiblity
-Fiber channel

--FC or iSCSI

--NetApp - Appliances -manage SAN

-LUNs - Logical Unit Number
-HBA - Host Bus Adaptor
--like NIC Adaptor but for FC

-FCoE - Fiber channel Over Ethernet

-Block Level Storage
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Block Level storage - AWS - EBS
Object Level Storage - AWS - S3 Bucket
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iSCSI - Internet SCSI