Re: [Networker] Upgrade to LTO4 library, opinions about these libraries ?
2009-02-20 09:04:12
We have 2 Quantum i500 libraries. One has been in use since November, the
other will be in production next month. The one that we've been using replaced
a Quantum M2500 with LTO-2 drives. The i500 has been flawless, the picker is
much faster over the M2500. We are very happy with the i500 and would
recommend it to anyone. We have one dual-channel fibre hba at this time. The
controller shares one of the tape drive channels for communications. We'd had
2-dual channels SCSI hbas for the LTO-2 library, but we had to retain one of
the hbas for the controller (Dell daughter card) to manage the disk drives. I
mention this because we have 3 IBM tape drives in the i500, but can only access
2 of them at this time. Even with that, the LTO-4 drives are so much faster,
that we are completing our largest backups in less time than with 3 LTO-2
drives, about 1/3 - 1/2 less time.
While we have a couple of SANS here, our backups are all server-based file
systems. Our networker server is RHEL4 on a Dell 2850. We use v7.4.3
Networker.
You didn't indicate whether you were planning on using tape encryption or not.
Patti Clark
DOE/OSTI
> -----Original Message-----
> From: EMC NetWorker discussion
> [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On Behalf Of Manel Rodero
> Sent: Friday, February 20, 2009 6:47 AM
> To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
> Subject: [Networker] Upgrade to LTO4 library, opinions about
> these libraries ?
>
> Hello,
>
> We're evaluating different offers por changing our old library (a
> Qualstar TLS6460 with 60 slots/4 drives SDLT320) to a new
> LTO4 library
> with FC interfaces.
>
> Our initial idea is to connect the library (i.e. its 2 initial LTO4
> drives) directly to the server using a dual channel HBA
> interface, but
> we are evaluating the connection to our SAN too (for having
> some hosts
> direct backup to the library like storage nodes).
>
> We have different offers by our providers and we would like
> to hear your
> opinions about these libraries (support, problems, evolution, etc.):
>
> * SpectraLogic Spectra T120 (30 slots, 2xLTO4,
> * Quantum Scalar i500 (41 slots, 2xLTO4, I/O magazine 6 slots)
> * Dell PowerVault ML6010 (41 slots, 2xLTO4, I/O magazine 6 slots)
> * Sun StorageTek SL500 (30 slots, 2xLTO4, CAP magazine 5 slots)
>
> Thank you very much!
>
> --
>
> o o o Manel Rodero Blánquez | LCFIB - FIB - UPC
> o o o IT System Manager | Campus Nord - Modul B6
> o o o Barcelona School of Informatics | Jordi Girona, 1-3
> U P C Technical University of Catalonia | 08034 Barcelona (Spain)
> |
> manel AT fib.upc DOT edu | Tel: +00 34 93 401 0847
> http://www.fib.upc.edu/ | Fax: +00 34 93 401 7040
>
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