Yeah, have been migrating all file n print to filers and utilising VTL's. in essence wont be wasting any drives as they are virtual and in abundance should we need them. Additionally no requirement for SSO for the same reason, however we need them configured in NBU for the ndmp device paths and was trying to alleviate hitting a NBU limitation further down the line.
In a physical non-ndmp drive env we would never reach a limitation as the media server would be taking the overhead and would never try configure the amount of drives we are intending to. Regards David Clooney -----Original Message----- From: Justin Piszcz [mailto:jpis...@lucidpixels.com] Sent: 20 July 2009 12:57 To: Clooney, David Cc: veritas-bu@mailman.eng.auburn.edu Subject: RE: [Veritas-bu] Remommended maximum # of drives per media server. Hi, When I used to use NDMP I had one media server (i did not setup the initial environment) but the way it was setup is there was one media server with LTO-2 drives that were attached to the netapp/toaster), SSO was not used in the environment, nor were any fiber switches, this is a waste of two drives in the big picture, but this environment was specifically setup to backup this netapp/toaster unit. Do you have a lot of netapp filers? Do you use SSO? Justin. On Mon, 20 Jul 2009, Clooney, David wrote: > Thanks Justin > > Very useful info, however I was thinking more along the lines of a NBU > limitation as a lot of the drives we are configuring are in fact > filer/NDMP based drives and the overheads will be on the filer. > > Regards > > David Clooney > > -----Original Message----- > From: Justin Piszcz [mailto:jpis...@lucidpixels.com] > Sent: 20 July 2009 12:42 > To: Clooney, David > Cc: veritas-bu@mailman.eng.auburn.edu > Subject: Re: [Veritas-bu] Remommended maximum # of drives per media > server. > > Hi Dave, > > That depends on how much throughput you can drive through the > motherboard/network/disk. > > LTO-3 = 90MiB/s for compressed data > LTO-4 = 120MiB/s for compressed data > > (when rating, people usually rate for 180MiB/s and 240MiB/s to account > for > 2:1 compression) > > So if you have 10 gigabit ethernet (or) a fast disk array, you need to > make sure there is enough bandwidth (today, PCI-e lanes) on the > motherboard to handle how many drives you plan on putting in a server. > > This is just my opinion: > > Minimum drives per media server: 2 (to faciliate a restore incase one > drive goes down and you are not using the FORCE_RESTORE media server > directive). > > LTO-2 = 2 drives per server (hp dl38[0-5]* class + 1gbps) > LTO-3 = 4 drives per server (same class + 10gbps) > LTO-4 = 3-4 drives per server (if same class of hw + 10gbps) > > What kind of configuration(s) does everyone here use? How many drives > per > media server? > > Justin. > > On Mon, 20 Jul 2009, Clooney, David wrote: > >> Hi All >> >> >> >> Does anyone know the symantec maximum number of recommended drives per >> media server? >> >> >> >> Regards >> >> >> >> Dave >> >> >> >> >> Notice to recipient: >> The information in this internet e-mail and any attachments is > confidential and may be privileged. It is intended solely for the > addressee. If you are not the intended addressee please notify the > sender immediately by telephone. 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If you are not the intended addressee please notify the sender immediately by telephone. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. > > When addressed to external clients any opinions or advice contained in this internet e-mail are subject to the terms and conditions expressed in any applicable governing terms of business or client engagement letter issued by the pertinent Bank of America group entity. > > If this email originates from the U.K. please note that Bank of America, N.A., London Branch, Banc of America Securities Limited and MBNA Europe Bank Limited are authorised and regulated by the Financial Services Authority. For all U.K. corporate disclosures, please refer to www.bankofamerica.com/ukcompanies > Notice to recipient: The information in this internet e-mail and any attachments is confidential and may be privileged. It is intended solely for the addressee. If you are not the intended addressee please notify the sender immediately by telephone. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. When addressed to external clients any opinions or advice contained in this internet e-mail are subject to the terms and conditions expressed in any applicable governing terms of business or client engagement letter issued by the pertinent Bank of America group entity. If this email originates from the U.K. please note that Bank of America, N.A., London Branch, Banc of America Securities Limited and MBNA Europe Bank Limited are authorised and regulated by the Financial Services Authority. 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