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Thanks for your advice it helped
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We have a HP MSA2012i SAN it was mapped to our backup server via ISCSI and appeared as 4 drives G,J,K and L. &nbsp;Since Tuesday morning the drives have disappeared from the server. &nbsp;I have had a look at the SAN and cant see any problems which are obvious with it. &nbsp;In the backup server logs there were some iscsiPrt error logs see below<br />
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Connection to the target was lost. The initiator will attempt to retry the connection.<br />
The initiator could not send an iSCSI PDU. Error status is given in the dump data.<br />
Initiator failed to connect to the target. Target IP address and TCP Port number are given in dump data.<br />
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An help would be greatly appreciated?
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We have a HP MSA2012i SAN it was mapped to our backup server via ISCSI and appeared as 4 drives G,J,K and L.  Since Tuesday morning the drives have disappeared from the server.  I have had a look at the SAN and cant see any problems which are obvious with it.  In the backup server logs there were some iscsiPrt error logs see below

Connection to the target was lost. The initiator will attempt to retry the connection.
The initiator could not send an iSCSI PDU. Error status is given in the dump data.
Initiator failed to connect to the target. Target IP address and TCP Port number are given in dump data.


An help would be greatly appreciated?

SAN Drives mapped Via ISCSI disappeared from server

iscsi

Windows Server 2008 and Windows Server 2008 R2, based on the Microsoft Vista codebase, is the last 32-bit server operating system released by Microsoft. It has a number of versions, including including Foundation, Standard, Enterprise, Datacenter, Web, HPC Server, Itanium and Storage; new features included server core installation and Hyper-V.

Windows Server 2008

Storage devices include any device used for storing and retrieving digital information. Hard disk drives (HDDs) use one or more rigid ("hard") rapidly rotating disks (platters) coated with magnetic material. Data is accessed in a random-access manner, meaning that individual blocks of data can be stored or retrieved in any order and not only sequentially. The primary competing technology for secondary storage is flash memory in the form of solid-state drives (SSDs), but HDDs remain the dominant medium for secondary storage due to advantages in price per bit and per-device recording capacity. CD-RW (Compact Disc-ReWritable) is a digital optical disc storage format that allows information to be stored outside the mechanical HDD.