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iSCSI Storage

iSCSI storage enables efficient use of a disk space while ensuring data safety and increased performance. Moreover, centralized storage management utilizing iSCSI and RAID technology makes administration more comfortable and reduces downtime in case of a hard drive failure.

From a technical perspective, iSCSI storage is a set of hardware and software designed to serve LUNs (Logical Unit Numbers) over a network. Such a server, designed for simultaneous access of multiple users, must meet the highest standards in terms of performance, reliability and redundancy.

Hardware

A dedicated hardware for iSCSI storage solutions should meet certain conditions to provide good performance, capacity and to guarantee safety. Here are the general hardware requirements:

  • Server platform with two quad-core CPUs for high performance
  • H/W RAID controller with support for RAID5 or RAID6 for data safety and good performance
  • Enterprise class SATA drives for high speed drive transfers and data reliability
  • 10GbE NIC for high speed network connection or multiple 1GbE NICs for iSCSI MPIO network connection
  • A large number of SATA/ATA/SAS drives for large capacity
  • Redundant power supply for system reliability

Software

The general requirements for the software are similar to those, defined for hardware - this means: manageability (usability and flexibility), network security (backup and data leakage prevention) and high performance (enabling full use of the hardware capabilities). Additional, but important criterion for iSCSI implementations is a low price of the software.

Below are the general requirements for software:

  • Support for iSCSI Multipath I/O (MPIO) to iSCSI target – allowing multiple connections to one target, which increases performance and reliability
  • Support for iSCSI CHAP – allowing CHAP users to be assigned to a specific iSCSI target
  • Support for IP address restrictions for an iSCSI target - allowing administrators to set up a range of IP addresses which have access to targets
  • Support for SAS/SATA RAID Controllers for large capacity and data safety
  • Built-in, SNMP Based Monitoring System and E-mail notification for system monitoring

We recommend Open-E DSS V7 as a software solution for the iSCSI storages. It meets all the requirements presented above, guaranteeing both high performance and a low price.

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*Content refers to Open-E DSS V6. Open-E DSS V7 includes the features mentioned in this referral.

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