Re: [Networker] Ideal Linux Configuration

I get about 3 months between cleanings on my SDLT320 drives with
firmware 83 - it's only done when the drive wants a clean and is handled
entirely by the L700, I have very few tape errors across 16 drives. When
we had firmware 43 we were replacing each drive about once every six
months, but no drive replacements now on any drive for over a year.

So that's why I suggested you look at the firmware revision.

-----Original Message-----
From: Ken Gehring [mailto:kgehring AT myrealbox DOT com] 
Sent: Wednesday, 5 April 2006 11:20 PM
To: NETWORKER AT listserv.temple DOT edu; Peter Viertel
Subject: Re: Re: [Networker] Ideal Linux Configuration

Yes, 4 times a week. Mon, Wed, Fri are forced cleanings  (we use the
cleaning tapes that only the L80 knows about) and once a week networker
does a cleaning (4 drives on Sat an 4 on Sunday). Regardless of what
Quantum and SUN/Storagetek say, I'd say that SDLT drives are good for
about 20 hours before they need to be cleaned.

After a LOT of grief with the jukebox, that this was on of the few
things that seemed to resolve "most" of the problems.

Ken

-----Original Message-----
From: Peter Viertel <Peter.Viertel AT MACQUARIE DOT COM>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Wed, 5 Apr 2006 09:45:39 +1000
Subject: Re: [Networker] Ideal Linux Configuration

You need to clean 4 times a week?

what is the firmware revision on your SDLT drives?    if you have less
that 80 then the drive's cleaning routine is buggy.

> -----Original Message-----
> From: Legato NetWorker discussion
> [mailto:NETWORKER AT listserv.temple DOT edu]On Behalf Of Ken Gehring
> Sent: Wednesday, 5 April 2006 6:38 AM
> To: NETWORKER AT listserv.temple DOT edu
> Subject: Re: [Networker] Ideal Linux Configuration
> 
> 
> The only issues we've seen so far with Linux are
> 1) inability to get more that 1Gb/sec thoughput using multiple Gb NICs
> 2) We had some instability with our SDLT drives and the amounts of 
> data we were backing up. Cleaning the drives 4 times per week has 
> solved most of those problems.
> 3) Bad media. We have had problems with bad media (possible related to

> not enough cleaning). We are now using mainly Fuji and Quantum media 
> and most of this issue is resolved.
> 
> Ken
> 
> -----Original Message-----
> From: Librado Pamintuan <LPamintuan AT REGINA DOT CA>
> To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
> Date: Tue, 4 Apr 2006 12:05:08 -0600
> Subject: Re: [Networker] Ideal Linux Configuration
> 
> Here are some specification of my Legato Networker server v7.2.1
> 
> 
> Operating System:
> Red Hat ES 3 v2.4.21-32.0.1.ELsmp
> 
> 
> 
> Dell PowerEdge 2850
> 3.0GHz/1MB Cache, Xeon, 800MHzFront Side Bus for PowerEdge 2850 4GB 
> DDR2 400MHz (2X2GB), Dual Ranked DIMMs 3x36GB,U320,SCSI,1IN 15K,PE2850

> Adaptec 39160 SCSI HBA (replaced it with an LSI Logic 22320-RB)
> 
> 
> Tape Library:
> ADIC Scalar 100 with 2xLTO-2 tape drives.
> 
> 
> D2D backup:
> using 1 TB space from IP SAN
> 
> 
> Backup clients:
> 13 Unix-AIX servers (mixed of pSeries, 270, 6H*) 10 Netware servers
> 40+ Win/NT servers
> 
> 
> No performance grief/issue so far.
> 
> 
> hope this helps,
> 
> 
> 
> 
> 
> 
> Librado Pamintuan
> Technical Support Analyst II
> Information Systems Dep.
> Operations Group
> City of Regina
> 
> 
> Phone:          (306) 777-7573
> General Fax: (306) 777-6804
> eFax:             (306) 546-6002
> eMail:            lpamintuan AT regina DOT ca
> 
> >>> Clarkp AT OSTI DOT GOV 04/Apr/2006 10:57 am >>>
> 
> 
> If there is such a beast, I'm looking to configure a new box using 
> RHEL on a Dell rack server.  Currently, we are using a Sun V440 with a

> Quantum M2500 with 3-LTO2 drives and SCSI connections, and Networker 
> v7.2.1.  The Sun box is used for multiple purposes and the desire is 
> to have a single purpose box for the backups.
> 
> Assumptions:
> 1) The tape library will be moved to the new server.
> 2) RHELv3 will be used until a more stable networker v7.3.x is 
> available, then upgrade to RHELv4.
> 3) Currently, RHEL and Solaris are the clients.
> 4) Windows clients will be added in the future.
> 
> We have several Dell based single-purpose Linux servers in our 
> inventory and are quite happy with them.  I've read several posts here

> that indicate most folks are fairly happy with a Linux/Networker 
> arrangement.
> I'm leaning towards a Dell 2850, or maybe 1850, but am uncertain on 
> how much RAM nor what type of SCSI controller to use.  I could use 
> some discussion, since this will be around for a while.
> 
> Patti Clark
> Unix System Administrator - DOE/OSTI
> 
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