This paper studied of (SAN, iSCSI protocol) 
and investigates about possibility, using 
storage technology of the SANs, and iSCSI-
SAN protocol, to improve access to attached 
storage disks storages in local system, with 
using iSCSI-SANs as virtual storage, is 
rather than DAS storage, in local system. 
Where explains the results of experiment is 
that improving throughput of iSCSI-SANs in 
terms of (I/Os, MB/s), and average response 
time in different block sizes of the (I/O) 
request, were better than attached storage 
disks storages as DAS in local system. This 
means that use iSCSI-SANs in local system 
as attaché storage disks storages as DAS , 
was become possible, without cost , high 
performance, easy control, and allow for use 
of all a traditional DAS at a fraction of the cost 
, without complexity and effort as SAN. The 
SCVM applications, allow for conversion DAS 
storage to an SAN storage as virtual machine 
are accessed by machines using iSCSI-SAN 
protocol. Thus, The iSCSI-SANs technology 
is well suitable to implement the SAN, until in 
system of PC same.