Re: Tape vs HDD vs NAS (speed considerations and size etc)..


Leythos wrote:
In article <1168180181.996230.30150@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
markm75c@xxxxxxx says...

Anna Clark (remove this) wrote:
Hi Leythos:

The OP was talking about as much as a $10K tape solutions, which is why I
chimed in with duplicate NAS's.

http://www.cdw.com/shop/products/default.aspx?EDC=933011

Buffalo TeraStation Pro 2TB Network Attached Storage with Serial ATA Drive
2TB NAS with Gigabit Ethernet, RAID5, and Serial ATA Drives, Features
Microsoft Active Directory and an LCD display with pertinent information and
warning/error messages.
MFG#: TS-2.0TGL/R5

$1399.00

Anna


"Leythos" <void@xxxxxxxxxxx> wrote in message
news:MPG.200a3e8e104e7ee4989728@xxxxxxxxxxxxxxxxxxxx
In article <uTPxNggMHHA.5064@xxxxxxxxxxxxxxxxxxxx>, "Anna Clark"
<anna.clark(remove this)@verizon.net> says...
Hi Leythos:

Not sure of what you speak. One could have one or more external USB
drives,
or one could have one or more NAS devices, or one could have one or more
of
each or both. I believe there are NAS devices small enough to carry.

Or maybe I don't understand the terminology, which is entirely possible,
even probable.

I don't consider a USB/Firewire device to be a NAS, it's just another
drive on the server, there is no "network" part of a USB external drive.

A NAS is something that has a network adapter built into it.

Most people that have a NAS solution can't afford a second NAS device.

--

spam999free@xxxxxxxxxx
remove 999 in order to email me

Yeah our budget is roughly a max of 10k.. we have about 40 users.. two
servers with 400gb/500gb backup drives (dual)..

So NAS could be one option, but maybe tape would still be the way to
go.. but are there any tape units that could do 40+ MB/s (comparable to
sataII).. I wouldnt think so...

I'd also think that for this size of data, even with 400gb tapes.. a
backup set for a given week to take offsite would be kludgy.. like say
5 tapes per week cycling on and offsite at the end of each week (not to
mention more expensive per tape)...

Just my thoughts on this though...

I do backup to disk, USB 2.0, at one customer, using SBS, and they
backup 60GB in about 3 hours (sorry, didn't do the math). With that
said, they also backup to tape, but only about 20GB of vital data.

I have a couple LTO-3 drives and LTO-2 drives in customers system, and
they've worked well, but, the tapes are not cheap, unless you consider
the cost of replacing the data on them. Have you considered LTO-3 for
backups? 400/800GB?

You could also consider the Magnum 1x7 LTO Tape Autoloader, about $5000
retail.

--

spam999free@xxxxxxxxxx
remove 999 in order to email me

Yeah LTO-3 is what I was considering.. but the cost per tape, I believe
was kinda high, considering the number of them we'd need for a full
backup set (two of them to alternate offsite each week, etc).

I'm pretty sure our 350gb backup that we do runs about 10 hours or more
to SATAII's.. I forget, but I think the specs on some LTO's were only
around 20mB/s, so that would take 2x as long if so.

.

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