I will tell you from 2 1/2 years living with the SL500, it is a complete 
nightmare. I've had to replace the robotics 8 times in 2 years.  On Linux 
Redhat 4.0, the drive order changes every time you replace a drive or the 
robotics, reboot the library (which is often because the robotics are 
constantly losing their mind), or any time you have to reboot the server. 
Honestly, after my experience, I wouldn't take an SL500 if they offered to pay 
me to take it. It is a full time job managing that thing.

Also, it's not a binary issue. The thing is slower than a snail on its best 
days, because the entire robotics system is gravity driven/pulley for vertical 
travel, and cable/pulley for forward/back/left/right and rotation of the 
grabber.

R. Scott McKnight
-----Original Message-----
From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On 
Behalf Of Hawkins, Michael
Sent: Friday, February 20, 2009 7:08 AM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: Re: [Networker] Upgrade to LTO4 library, opinions about these 
libraries ?

We moved from a L700 [8 LTO1] with 218 slots to a SL500 [6 LTO3] 146 slots 
[forgive me if the slots # are off]  and found that the SL500 is WAY much 
slower grabbing tapes and Networker cries much more often giving off its 
critical warnings waiting for a tape.  

That said it is also a given that the library was a total upgrade from 7.1.1 to 
7.3.4 so there might be some binary involved there.  




    -----Original Message-----
From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On 
Behalf Of Manel Rodero
Sent: Friday, February 20, 2009 5:47 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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