Amanda-Users

Re: SCSI card recommendations?

2007-03-08 13:34:01
Subject: Re: SCSI card recommendations?
From: "Guy Dallaire" <clepeterd AT gmail DOT com>
To: "Greg Troxel" <gdt AT ir.bbn DOT com>
Date: Thu, 8 Mar 2007 13:26:34 -0500
We have an OVERLAD dataloader Xpress LTO2 library (The 108 Gb/Hour model) connected through an old adaptec AHA2940U  adapter and have no problem whatsoever. Running under centos 4.

We get about 16 Mb/sec to the tape on average.

We're using FujiFilm LTO2 tape since 2 years and haven't got a single tape error with it.

Pretty satisfied by our setup.

2007/3/8, Greg Troxel < gdt AT ir.bbn DOT com>:
I am about to buy a couple of LTO-2 drives to replace my DDS3 drives
which are no longer big enough.  I'm looking at HP and IBM in
particular, but it seems they are all Ultra160 or Ultra320.  My
understanding is that these are all both wide and LVD, and use either
the HD 68-pin or the VHDCI connector, and that I can cable either of
these to any ultra160/ultra320 controller (and probably ultra2 wide
lvd).

Is it likely that an Adaptec 2940-U2W would work with such a drive?
It's said to be LVD, so the only issue should be topping out at 80
MB/s. The drive would be the only thing on the bus.

Can anyone recommend a SCSI card to use with LTO-2 drives that will
  fit in a normal PCI slot
  work with NetBSD (netbsd-4 branch, preferably)

(I am not super cost sensitive; a $300 host adaptor that causes me zero
grief beats $100 and a few hours of trouble.)



If anyone has comments to get or stay away from any particular LTO-2
drive, I'd like to hear them.  Hardware comments would be helpful on
the zmanda wiki, but I only saw tapetypes.

Also, comments about media reliability would be appreciated.  It seems
the LTO concept is that everything just 100% works, but I'd be
interested to hear "stay away from Brand X tapes; they are flaky"
comments.

    Thanks,
    Greg


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