Off topic a bit, but does anyone know how to map the st device names to rmt device names in the iostat output? I've written a script to do it but it seems a bit like hard work ... on my Solaris 9 boxes "iostat -xn" lists the rmt device names.
thanks, Phil > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf > Of Peter DrakeUnderkoffler > Sent: 14 June 2007 00:48 > To: Ed Wilts > Cc: VERITAS-BU@mailman.eng.auburn.edu > Subject: Re: [Veritas-bu] Tuning Solaris 10 for NetBackup Media Server > > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > If your running the tapes on Solaris, the iostat utility will show the > throughput on st devices as well as disks and ttys. If thats > what your > looking for, start with "iostat -xE" to list all the device > names as needed > by the iostat utility. Might show something like this: > > st15 Soft Errors: 0 Hard Errors: 0 Transport Errors: 0 > Vendor: HP Product: Ultrium 2-SCSI Revision: S33H Serial No: > > You can then run that against iostat as in "iostat st15 2" > > Thanks > Peter > > Peter DrakeUnderkoffler > Xinupro, LLC > 617-834-2352 > > > > Ed Wilts wrote: > >>Our numbers vary greatly according to the clients. We have very old > >>Solaris machines that backup at 50+ MB/sec. We have very > new Windows > >>machines where throughput varies greatly between different > volumes on > >>the same machine (e.g. a volume with 5 million tiny files > backs up at > >>30 MB/sec via FlashBackup, while another volume on the same machine > >>gets about 7 MB/sec backing up small files via FlashBackup). > >> > >>It's difficult to get good numbers because we use > multi-streaming and > >>multiplexing like crazy. So the actual throughput to the > drive is the > >>sum of the jobs using the drive at that moment. Individual > jobs vary > >>between 5 MB/sec and about 65 MB/sec. But the total > throughput to the > >>tape heads is unknown. > >> > >>Anyone know an easy way to calculate that? > > > > > > If your drives are fibre-attached, use something like MRTG > to grab the fibre > > port stats and graph that. That gives us a pretty good > idea as to what the > > tape speeds are. > > > > -- > > Ed Wilts, Mounds View, MN, USA > > mailto:[EMAIL PROTECTED] > > I GoodSearch for Bundles Of Love: > > http://www.goodsearch.com/?charityid=821118 > > > > _______________________________________________ > > Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu > > http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu > > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.5 (FreeBSD) > > iD8DBQFGcIISl+lekZRM55oRAgwPAKCwOXeHU66dOtdEevWstDSZ/Rv7owCfeAhb > LnvzECvM4VkhddgjyBdj5n4= > =k2DP > -----END PGP SIGNATURE----- > _______________________________________________ > Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu > http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu > ----------------------------------------- Egg is a trading name of the Egg group of companies which includes: Egg plc (reg no 2448340), Egg Financial Intermediation Ltd (reg no 3828289), and Egg Banking plc (reg no 2999842). Egg Banking plc and Egg Financial Intermediation Ltd are authorised and regulated by the Financial Services Authority (FSA) and are entered in the FSA register under numbers 205621 and 309551 respectively. These members of the Egg group are registered in England and Wales. Registered office: Citigroup Centre, Canada Square, London E14 5LB. This e-mail is confidential and for use by the addressee only. If you are not the intended recipient of this e-mail and have received it in error, please return the message to the sender by replying to it and then delete it from your mailbox. Internet e-mails are not necessarily secure. The Egg group of companies do not accept responsibility for changes made to this message after it was sent. Whilst all reasonable care has been taken to avoid the transmission of viruses, it is the responsibility of the recipient to ensure that the onward transmission, opening or use of this message and any attachments will not adversely affect its systems or data. No responsibility is accepted by the Egg group of companies in this regard and the recipient should carry out such virus and other checks as it considers appropriate. This communication does not create or modify any contract. _______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu