Having just been through this exercise, my thoughts are that unless you have very distinct needs, most products will do what you want them do (SAN vs. NAS fundamentals aside).
Do look at the licensing, and do look at the expansion options. Equallogic and Lefthand do require you to buy "nodes", however they don't require you to buy licenses, whilst, say, EMC or Netapp will allow you to buy shelves and add disks, but the licenses are mostly additional extras which very quickly add up - EMC or Netapp would counter that with Equallogic or Lefthand you're paying for licenses every time you add capacity, and there's an element of truth in that I guess. One thing that I personally liked with the P4000 solution is their VSA, it means if I want to provision 10tb of cheap unimportant space I can do so on anything that will run ESX/ESXi, I don't have to buy expensive cabinets/shelves just to store 5 year old stuff that people still access occasionally. From: [email protected] [mailto:[email protected]] Sent: 19 November 2010 16:06 To: NT System Admin Issues Subject: RE: First Steps into the SAN Arena Thanks Sean and everyone else, I had an offsite meeting I had to go to right after posting my question so sorry for the delay in getting back to you. The depth of questions you guys are offering shows there's a bunch I don't yet understand so my answers may not be as coherent as you deserve. I've looked at Equalogic, Netapp, Lefthand and EMC. From the IT folks in our AEC Engineering industry who shared their setups, all had good experience with these vendors. Different people just had different preferences to different capabilities so that's why I thought I should run it by this group. They all seemed to be able to perform the necessary shared storage functionality just in different ways. Most vendors like the Equalogic, required you to buy fully populated shelves even though you may not need that much space which added cost. The flexibility of the snapshots with EMC "seemed", to my inexperienced eyes, to be more robust that others in that you could, among other things, restore a snapshot without losing all the other snapshots, mount snapshots as drives, etc. How much value this truly has over time I don't know but it seemed more flexible. I also like the ability for the system to automatically move data to slower or faster drives as needed. We have a lot of runaway users so we rely on quotas to keep users from adding 10 GB a day of crap and quotas have worked out well in this regard. As such, it's my understanding that I need to go with the NAS functionality to support Windows quotas and AD permissions. I'm told that the NAS functionality of the array provides the ability to present CIFS shares (and NFS) to our users. Obviously, having never had a SAN, there's a bunch I don't understand or even know to ask but every vendor seems able to do the job. Technically, they all seem to meet our needs and I can point to several companies in my industry who uses each of these vendors so choosing the "best" one is daunting! I definitely like the US tech support, the 4 hours onsite support etc, future expandability, etc. We have about 24 TB of data but a lot of it is online archive data that we must keep online. Jim From: Sean Martin [mailto:[email protected]] Sent: Thursday, November 18, 2010 3:58 PM To: NT System Admin Issues Subject: Re: First Steps into the SAN Arena If you're looking at the NS line I would definitely talk to Dell about Equalogics. Are you planning on utilizing the CIFS or NFS features? If not, look at the CX4 line as they support iSCSI and Fiber Channel. I agree with Anders that the Celerra interface is not the most intuitive and is overly complex. However, I believe they're moving from Navisphere and Celerra to Unisphere which combines both interfaces into one that can manage all of the Clariions. There's apparently a lot of integration with Unisphere and VSphere. Haven't had a chance to play with it yet. I was in the planning stages of upgrading our CX4-960 to FLARE 30 (required to upgrade to Unisphere) but apparently there's a couple of critical issues so EMC is recommending we hold off until the hotfixes are released sometime in December. - Sean On Thu, Nov 18, 2010 at 2:21 PM, Anders Blomgren <[email protected]> wrote: That behind that admitedly much improved gui the celerra is a complex beast. That quite a few more complex system changes require an EMC Technitian. That being said, I do like our Celerra. And probably wont get another one when our current one needs replacing. The celerra is clariion storage and a file serving box which is unnecessarily complex for our needs. I'll probably increase the storage for our vsphere cluster and stand up a windows vm. So it all depends on your actual needs, i.e. number of vsphere hosts and nas clients. Probably more than you asked for but i get the feeling that EMC is targeting smb's with a product that they don't always have the resources to manage. -Anders Sent from my iPhone On 18 nov 2010, at 23:45, "[email protected]" <[email protected]> wrote: Hello, I know there are many vendors and ways to skin the SAN gopher but I'm leaning towards this basic system as it meets our specs: EMC NS-120 10GB/s Celerra System Dual Data Movers Dual SPS NFS CIFS Seems they're offering a pretty good price. I'm looking to virtualize with VMWare VSphere and think this SAN backend will meet our needs. My question is, does anyone have any experience with EMC Celerra systems or EMC in general? Would I be making a big mistake going with EMC or the Celerra from a support or stability perspective? Being new to SAN's I don't have a lot of experience so are there any gotcha's I should be looking for? Any pieces of info EMC sales guys frequent forget to offer up? Please feel free to render any advice one way or the other. 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