DAS
Typically Direct Attached Storage (DAS) as the name suggests are disk drives or a disk subsystem which is either in the same enclosure as the server or an external unit attached by a short cable. Direct Attached Storage (DAS) is normally connected to the server which ‘owns’ it, by a SCSI bus. There have been many technologies used to actually connect the disk to the computer, the most common are SCSI, IDE/ATA, Fiber Channel and Serial ATA (SATA).
NAS
Network Attached Storage (NAS) Servers are the easiest and most cost effective way of adding Storage to your network. If you need to increase the available Storage on your network without the cost implications of deploying a traditional File Server, Taknet Systems offer a range of products that can be attached quickly and directly to your Ethernet network to provide significant additional disk capacity at a very competitive price.
iSCSI
iSCSI is Internet SCSI (Small Computer System Interface), an
Internet Protocol (IP)-based
storage networking standard for linking data storage facilities,
developed by the Internet Engineering Task Force (IETF).
By carrying
SCSI commands over IP networks, iSCSI is used to facilitate data
transfers over intranets and to manage storage over long distances.
The iSCSI
protocol is among the key technologies expected to help bring
about rapid development of the storage area network (SAN)
market, by increasing the capabilities and performance of storage
data transmission. Because of the ubiquity of IP networks, iSCSI can
be used to transmit data over local area networks (LANs),
wide area networks (WANs),
or the Internet and can enable location-independent data storage and
retrieval. |
