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Forum Discussion
ISCSI performance + sharing settings
Using RAIDiator 4.2.30 on my NAS, I've made several shares with different user settings. How can I setup the same user + group sharing settings for an iSCSI volume? It seems the file transfer p...
iSCSI provides block storage (e.g., raw storage). The client is responsible for formatting it, and also is responsible for file permissions. Think of it as a virtual disk.
Shares can be accessed simultaneously by multiple users. iSCSI can't be - it is intended to provide storage for a single client.
Also, ISCSI is opaque to the NAS - it has no idea what files are stored in the iSCSI LUN. If you back up the LUN from the NAS, you need to save the entire LUN - there is no incremental backup for iSCSI possible with OS 4.2. (Business OS 6 NAS can use ReadyDR, though even that is a block-by-block backup. iSCSI is still opaque to the NAS).
I haven't benchmarked iSCSI vs SMB, but from what I've read I suspect that iSCSI is faster for small file transfers, but SMB is somewhat faster for large file transfers. Though that might well depend on the NAS model.
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