Lesson plan
Persistent binding
Host-based zoning can include WWN or LUN masking, and is typically known as “persistent binding.” In storage networking, ”persistent binding” is an option of zoning. Host-based zoning is usually referred to as persistent binding or LUN, and is perhaps the least implemented form of zoning. Because it requires the host configuration to be correct in order to avoid zoning conflicts, this form of zoning creates a greater opportunity for administrative errors and conflicting access to targets. Moreover, zoning interfaces vary among different host operating systems and HBA's — increasing the possibility for administrative errors. If a host is not configured with the zoning software, it can access all devices in the fabric and create an even higher probability of data corruption. Host-based zoning is often used when clusters are implemented to control the mapping of devices to specific target IDs. However, it should never be the only form of zoning. Augmenting host-based zoning with storage- and fabric-based zoning is the only acceptable method to reliably control device access and data security. Basically, A given LUN has it SCSI id assigned by its RAID device (typically a SAN ). But for some purposes it's useful to have the SCSI id assigned by the host itself: that's persistent binding.
Article summary
Host-based zoning can include WWN or LUN masking, and is typically known as “persistent binding.” In storage networking, ”persistent binding” is an option of zoning. Host-based zoning is usually referred to as persistent binding or LUN, and is perhaps the least implemented form of zoning. Because it requires the host configuration to be correct in order to avoid zoning conflicts, this form of zoning creates a greater opportunity for administrative errors and conflicting access to targets. Moreover, zoning interfaces vary among different host operating systems and HBA's — increasing the possibility for administrative errors. If a host is not configured with the zoning software, it can access all devices in the fabric and create an even higher probability of data corruption. Host-based zoning is often used when clusters are implemented to control the mapping of devices to specific target IDs. However, it should never be the only form of zoning. Augmenting host-based zoning with storage- and fabric-based zoning is the only acceptable method to reliably control device access and data security. Basically, A given LUN has it SCSI id assigned by its RAID device (typically a SAN ). But for some purposes it's useful to have the SCSI id assigned by the host itself: that's persistent binding.
Key claims
No claims recorded.
Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
No sources recorded.
Key claims and bibliography are generated from the same tracked claims and sources as the article page.