Access time from cartridge to drive, base unit 50 slots, avarage 12 sec
Access time from cartridge to drive, all 5 modules, avarage 13 sec, max 16

regards  -attila

--
********************************************************************
Attila Mester                           5 Digit Sun internal: x62534
Data Protection Architect                  Tel: (+49 89) 46 008 2534
Sun Microsystems GmbH                      Fax: (+49 89) 46 008 2583
Sonnenallee 1                                Mobil: +49 172 812 5947
85551 Heimstetten / Germany              mail: attila.mester AT sun DOT com
********************************************************************



Clark, Patti schrieb:

 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

To sign off this list, send email to listserv AT listserv.temple DOT edu and type "signoff networker" in the body of the email. Please write to networker-request AT listserv.temple DOT edu if you have any problems with this list. You can access the archives at http://listserv.temple.edu/archives/networker.html or

via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER

To sign off this list, send email to listserv AT listserv.temple DOT edu and type 
"signoff networker" in the body of the email. Please write to networker-request 
AT listserv.temple DOT edu if you have any problems with this list. You can access the 
archives at http://listserv.temple.edu/archives/networker.html or
via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER

--
********************************************************************
Attila Mester                           5 Digit Sun internal: x62534
Data Protection Architect                  Tel: (+49 89) 46 008 2534
Sun Microsystems GmbH                      Fax: (+49 89) 46 008 2583
Sonnenallee 1                                Mobil: +49 172 812 5947
85551 Heimstetten / Germany              mail: attila.mester AT sun DOT com
********************************************************************

To sign off this list, send email to listserv AT listserv.temple DOT edu and type 
"signoff networker" in the body of the email. Please write to networker-request 
AT listserv.temple DOT edu if you have any problems with this list. You can access the 
archives at http://listserv.temple.edu/archives/networker.html or
via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER