If a drive is visible to one and only one server because of zoning , then SSO isn't necessary. SSO is used to share a single drive among multiple media servers. Each server uses it in turn but then releases it after use to be used by a different server. While you may be licensed for SSO, what you're describing won't need it.
You could still limit the use of drives by each media server through multiple techniques - storage units "max drive" setting comes to mind - so that only X number of drives are used simultaneously per media server. You could still have it choose that X drives from a shared pool of all your drives. I suspect your servers are more than capable of keeping two drives busy (subject to throttling introduced by your back-end SAN & HBA speeds). Your storage guys are, IMO, being too conservative. From: [email protected] [mailto:[email protected]] On Behalf Of David Turner Sent: Tuesday, June 30, 2009 2:55 PM To: [email protected] Cc: Will Tucker Subject: [Veritas-bu] SSO Option for LTO3 drives I have 1 windows master running Netbackup 6.5 with 3 media servers. I have Storagetek/Sun SL8500 with 8 LTO3 tape drives (2 drives are dedicated via NDMP to a Netapp 3050). All drives are connected via FC to brocade etc. we have the Shared storage option but I don't think it's working properly. How can I verify that its working? I believe the engineers that configured the zoning on the switch dedicated 2 drives per server and dedicate 2 to the Netapp. Did it makes sense to purchase SSO? I was told you should only have 2 LTO3 drives per servers because of "shoe shining" and the servers ability to handle more than 2 drives (Dell 2950's quad cores with 8gig of ram). I am wondering if the switch should be rezoned to make use of SSO or can the zoning have an impact on how SSO should be configured? How can these 2 play together? As you can see I am all confused and would love for someone to explain this in simple terms. thanks
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