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. 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