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. 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. For all U.K. corporate disclosures, please refer to www.bankofamerica.com/ukcompanies _______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu