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SAN - physical vs logical distinction of LUNs

Let's say 10 organizations have their SAN storage in one central location. Their LUNs are all logically seperated out, but they are all part of the same physical SAN.

1)If the 10 entities are all maintaining their own private data collections, is there any vulnerability for the data? Is Logical seperation enough?

2)Would it be cost-prohibitive for each organization to have their own SAN physically distinct from the others.

Thanks.
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25112
Asked:
25112
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3 Solutions
 
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
1. Yes, you would need very tight security controls, to prevent LUNs be accessible from other organisations.

2. Storage virtualisation is much cheaper, than all organisations having their own SAN.
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25112Author Commented:
>>1. Yes, you would need very tight security controls, to prevent LUNs be accessible from other organisations.

what would be the standards for these tight security controls.. can you suggest any link i can read about this?

>>2. Storage virtualisation is much cheaper, than all organisations having their own SAN.
can you please give a money figure example (approximate) so i can understand what extent
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
depends on the SAN, Fibre Channel or iSCSI.

If Fibre Channel it would be controlled by Zoning and HBA WWNN, if iSCSI it would be controlled by CHAP Secrets (a password to access the iSCSI LUN), and IQN/HBA node names.

see here
vSphere Storage Guide

£20-£25k per Single SAN approx 14TB RAW - e.g. Dell EqualLogic 4100
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andyalderSaggar makers bottom knockerCommented:
Data security is covered by LUN masking so they can't access each others LUN. That doesn't do anything for performance though, if one of them runs IOmeter all day (or stressful SQL queries) performance for the other companies may suffer.
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