High-Availability is the implementation of technology so that if a component fails, another can take over for it. Thanks to that solution server will continue working, resulting in no downtime. In previous versions server would be pending until full data synchronization would be completed. But now such delay doesn’t exist, other server just takes over immediately. With help of this technology you can create a High-Availability iSCSI SANs (also known as HA Clusters or Failover Clusters). They are computer clusters that are implemented primarily for the purpose of providing high availability of services which the cluster provides. They operate by having redundant computers or nodes which are then used to provide service when system components fail. Normally, if a storage server with a particular application crashes, the application server will be unavailable until someone fixes the crashed server. KernSafe active-active High-Availability iSCSI storage remedies this situation by discovering any hardware/software faults, and immediately switching the application server to another one without requiring administrative intervention or heaving any effect on the business thanks to no-downtime. iStorage Server is taking a key role in this process. It will be iStorage Server's role to take over control and switch to another server to maintain no-downtime.
iStorage Server will need to be configured properly to support this function, however the process is very simple and straightforward. More importantly, iStorage Server don't require any additional software to support High- Availability, which makes him very attractive and desirable to use. It is mainly designed to be used in server virtualization, critical databases, file sharing servers, business applications or customer services such as electronic commerce websites.

iStorage Server is an iSCSI target software which makes any x86, x64 or even Itanium Windows server into a high performance iSCSI SAN. Being an advanced and powerful, full-featured iSCSI Target software for Microsoft Windows (both commercial and free versions are available), it allows you quickly export existing storages such disk images, physical disks, partitions, CD/DVD-ROMs, tapes or any other type of SCSI based devices and even a variety of popular CD/DVD images to its client machines, which delivers immediate benefits allowing storage to be consolidated, virtualized and centrally managed. iStorage Server has also provided RAID-1 (mirror) feature, which allows you create two iSCSI devices for mirror backup, the iSCSI device can be local image file or remote iSCSI device, also with new added support for High-Availability and snapshot feature it is an ideal choice for any sized business.

iStorage Server is a hardware-independent, and do not require an additional hardware. Quickly create an IP SAN in minutes using hardware you already have. iStorage Server takes space on a windows file system and turns it into an iSCSI target. You can now let any computer on an Ethernet network use this iSCSI storage with benefits of cost-effective and scalable.

KernSafe has devoted to research storage solution for more than eight  years, and which always trying their best to make and meet a variety of user needs, from now on, iStorage Server has been released more than 2 years, and been sold more than 2000 copies of commercial versions. iStorage Server now supports natively x86 and x64, as well as Itanium machines.
Typical applications & clients:
•   Files, disks and CD-ROMs (images) centrally management and sharing to other Windows, Linux, Solaris, Netware and MACOS computers.
•   VMWare ESX Server
•   Citrix XenServer
•   Microsoft Hyper-v.
•   Windows 2003, Windows 2008 Clustering and more.
iStorage Server Key Features:
•   Provides extremely fast ISCSI RAM disk drives for temporary data storing on network.
•   Provides security disks for each client, Option, each client use own disk which use it’s CHAP password encrypted.
•   Provides a built-in iSCSI CD/DVD-ROM emulator which exports existing DVD-ROM ISO images to mounted iSCSI DVD-ROM drives on the clients.
•   Provides a built-in iSCSI virtual disk emulator. It exports existing disk images to mounted iSCSI disk drives on the clients.
•   Provides a network-bridged method. It exports an existing partition, disk, CD/DVD-ROM to clients as a virtual iSCSI drive.
•   Provides a RAID-1 (Mirror) device, it allows you create two image files for mirror backup, image file can be local file or remote iSCSI device.
•   Provides Generic SCSI device, it allows you map generic SCSI devices to your initiator, such as USB Storage, Tape and Optical Scanner.
•   Provides read and write caching, which use memory on server as cache to improve data transfers speed and response time.
•   Provides CHAP user authentication mechanism.
•   Provides client's IP address authentication mechanism with additional security.
•   Active Directory-integrated local and remote management console.
•   Support for Network Diskless boot
•   Provides iSCSI Target portal address management, which allows you to make iStorage Server to be able to work behind the firewall.
•   No restrictions on disk capacity, total number of hard disk installed, number of CPUs or CPU cores, and Ethernet ports or the amount of RAM.
•   Supports CDP/Snapshots, is compatible with Microsoft VSS (Volume Shadow Copy Services) snapshot, volume cloning and incremental backups with unlimited number of rollback points.
•   Supports High-Availability implementation of technology.
•   Supports multiple connections per iSCSI session, which allows you to create Round Robin, Weighted Paths and so on.
•   Native supports for x86, x64 and Itanium machines.
•   Supports Thin provisioning.
•   Supports 64-bit LBA, providing more than 2TB of disk space.
•   Supports sparse image file on NTFS file system. It allows the size of disk image file only depend on its content used.
•   Supports any features on file system, such as in NTFS, a image file can be encrypted, compressed, or shared with other computers.
•   Supports a variety of popular CD/DVD image formats, such as: .iso, .bin, .mdf, .cdi, .b5i, .nrg, .ccd, .sub, .img, .raw.
•   Supports a variety of partition table format, such as the MBR, GPT.
•   Fully Supports SCSI-2 Reserve / Release.
•   Fully Supports SCSI-3 Persistent Reserve.
•   Fully conforms to the latest iSCSI Standard 1.0 (former Draft 20).

Pricing and Availability:
iStorage Server is available from KernSafe Technologies or it’s resellers from North America, Europe and Asia etc. commercial prices range from $99.95 to $599.95, for more detail about the difference of feature covers of licenses, please see iStorage Server License Types.