RE: Storage server
- From: Ryan Hanisco <RyanHanisco@xxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Sat, 21 Jul 2007 07:46:01 -0700
Patrick,
If you are going to be using this for virtualized servers, you are probably
pretty firmly in the SAN neighborhood. You'll find that there are a ton of
options for scalability and that the current SAN software will give you
vastly superior performance. Specifically on transfer rates.
With a server, you are constricted by the speed and design of your network.
This means if you don't have very good switches, the correct QoS, and low
contention, the best you'll get on the transfer rate is 10G (if you've spend
that kind of money) or 1G with a pretty normal switch. Even if you team the
NICsm you're looking at 1G inbound -- slap a snffer in there, ARP only
advertizes one NIC in the Team, menaing that inbound traffic can only find
one NIC; remember that switches dosn't care about IP address, the forward by
MAC address, thus use their ARP tables for lookup.
With a SAN, you have fiber connections into dedicated data switches that,
these days, connect at 4G. With multipathing, you even have more redundency
and throughput optons (though you usually get a spanning tree blocking state
if you don't configure STP QoS.)
Last week I priced out a small 5TB (Native - before RAID) SAN from EMC with
the chassis, drives, licenses, installation, data switches, and support for
just over $68k. The prices have really come down and there are cheaper
options, but I wouldn't suggest straying from EMC unless you are going to
something truly large.
DO look into that as an option if this is somehting to drive production or
anything mission critical -- especially SQL.
Hope this helps.
--
Ryan Hanisco
MCSE, MCTS: SQL 2005, Project+
Chicago, IL
Remember: Marking helpful answers helps everyone find the info they need
quickly.
"Patrick Tang" wrote:
Hi Ryan,.
Thanks for your reply. The full story is we are planning to virtualize
our existing servers, and therefore we decided to centralize the data.
Basically, we've looked at few different options, and they are pretty much
the same idea. I personally not prefer SAN box because of the Flexibility
and Scalability, unless if we can spend big money.
Whereas if we use a storage server, we can easiliy upgrade the system
performance. The only drawback is we are not too sure which microsoft
product can turn a server into a SAN function storage server.
Would you know anything about that?
Patrick
"Ryan Hanisco" wrote:
Patrick,
I am usually the first to look at MS technologies to solve problems, but
there are some circumstances where there are much better options. Usually
int he storage market, you'll see better performance, scalability, and
resilliance from a SAN. There are circumstances where MS storage server
presents different options, but these are closing fast.
Looking at the EMC product line is usually a safe bet and they have some
good options as you look at adding a NAS for archival and SAN to SAN
synchronization.
What functionality are you looking for that you expect Storage Server to
provide?
--
Ryan Hanisco
MCSE, MCTS: SQL 2005, Project+
Chicago, IL
Remember: Marking helpful answers helps everyone find the info they need
quickly.
"Patrick Tang" wrote:
I need some experts opinion about purchasing a storage server. we recently
decided to centralize all data (about 600GB, including user/SQL/exchange
store). After lots of read and asking question, the answer is SAN.
My question is it is better to have a storage server rather than a closed
box (e.g. EMC SAN storage), I personally think a server is more flexible and
scalable. Whereas the EMC box might be easier to setup.
If i do want to run a server, what software (OS/application) is recommended?
obviously, i need the storage device appear as a local device on the
application server (just like SAN device).
I hope this make sense to everyone.
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