Starwind iscsi san
- STARWIND ISCSI SAN INSTALL
- STARWIND ISCSI SAN UPDATE
- STARWIND ISCSI SAN SOFTWARE
- STARWIND ISCSI SAN FREE
Update StarWind service on the first HA node. To prevent data loss, disconnect clients from HA (if it is possible).Ģ.
STARWIND ISCSI SAN UPDATE
Please, take the following steps to update the existing HA devices:ġ. Use LSFS virtual device type when thin-provisioning and snapshots features are needed. Use replication manager to add synchronous replication functionality for your device. Warning: Mirror, IBV and Deduplication devices of version 6.x and earlier versions have limited support in v8.0! Data from existing Mirror, IBV and Deduplication devices must be migrated to new ImageFile or LSFS devices after installation. Installation: Previous versions can be updated by installing this version over the existing installation. Network settings for replication can be changed on fly without rebuilding replication partners. High availability device can be created from any existing device by adding replication partner through replication manager. New simple device creation wizard allows create virtual device with target in three steps. This path will be used for all new devices. User interface has been reworked to provide super simple and clean user experience.ĭefault storage pool path can be set up for the server. L2 cache can be used with LSFS or flat storage devices for acceleration. LSFS provides high performance for random write access patterns, eliminating I/O blender effect in virtualized environments. It eliminates multiple rewrites of same data blocks. Synchronous replication for high availability can be configured for a LSFS device. LSFS container implements thin-provisioning, snapshots and optional online deduplication features. New Log-structured File System container: Other features of StarWind iSCSI SAN Version 8.0 Beta: State of the primary storage can be easily restored from replica. Replication channel bandwidth doesn’t affect the performance of primary storage which is replicated. Information on snapshots that are stored on the primary storage is replicated too. Asynchronous replication can be used to replicate data to remote site. Scale-out cluster: organize your servers to SAN cluster and create multi-node devices across the cluster easily.Īsynchronous replication: asynchronous mode added to replication engine. WRITE SAME, EXTENDED COPY, ATS commands are supported. Log-structured File System container: fixes and performance improvements.įlash cache: fix for the issue when non-default path has been used for L2 cache storage device.Ĭore: VAAI support for single-node devices and devices with synchronous replication. Contact beta-3 is out topic is dedicated for StarWind iSCSI SAN Version 8.0 Beta-2Ī lot of small fixes and updates, several new features.StarWind Virtual Tape Library (VTL) OEM.StarWind Virtual Tape Library Appliance (VTLA).StarWind HyperConverged Appliance (HCA).What I now want to do is a comparison about sequential read and write speed of both SW Targets and publish the results here in my Blog the next days. Note: I don’t work for either Microsoft or StarWind.
STARWIND ISCSI SAN SOFTWARE
The solution is to either use a hardware RAID card with decent write-back cache, or use a iscsi target software implements software writeback cache, such as StarWind or 3rd party iscsi appliance solution like nexenta. If you use storage pool or regular HBA card/onboard SATA, the performance will be really bad when there are many VMs. Windows server 2012 iSCSI target uses unbuffered I/O, means no read cache, no writeback cache. More memory will only allow you to support more concurrent initiators since each iSCSI session consumes system memory.īe careful if the iscsi client is hyper-v VM host. As a result, customers will not benefit from the caching even if you add more memory. All VHDs are opened unbuffered and write through to guard against loss of data in case of a power loss. May that be because of missing cache functionality?īased on my research, the Microsoft iSCSI Target does not utilize the file system cache.
STARWIND ISCSI SAN FREE
He found that MS iSCSI is 10x less performance than Starwind’s free iSCSI initiator. A Veeam Backup VM is a good example where such storage can be used for.īut there are also limitations on Microsofts iSCSI: Jake Rutski already tested performance for random access by using IOmeter. This enables functionality to implement some special requirements for a modern infrastructure, such as providing cheap backup space to your environment, together with simultaneous access from multiple hosts.
STARWIND ISCSI SAN INSTALL
On Server 2008r2 as well as Server 2012 you can install a iSCSI Target service to host LUNs as VHD files on you local NTFS file systems.