I can certainly appreciate that. We've only been able to construct an in-depth requirements matrix because of the collective experience of our staff. With that said, some of what we gathered was a result of reading white papers and searching the interwebs for examples of storage related matrices. I guess the real trick is recognizing when you don't know what to ask for.
I've had my battles with vendors and wanted to place blame for not being completely forth coming, but you've got to realize that they're trying to sell you a product and that's how they make a living. Now if you ask about possible limitations and they either give you half truths or down right lie, than you have every right to be upset. Following common RFI/RFP processes will help reduce the chances of that occurring. - Sean On Feb 7, 2012, at 5:54 PM, "Andrew S. Baker" <[email protected]> wrote: > I agree, but only partially. > > There are some things that are hard to figure out in advance, because they > are not limitations anywhere else, so you wouldn't be inclined to ask. > > About 8 or 9 months ago, we evaluated several SAN solutions, and the EMC > people came prepared to sell us a VNXe 3100 or 3300. We grilled them and > ultimately decided against them because of other limitations vs some other > vendor solutions we were targeting, but despite us telling them what we were > going to use the storage for, the maximum LUN size never came up. > > It's now added to my checklist, of course... > > ASB > http://XeeMe.com/AndrewBaker > Harnessing the Advantages of Technology for the SMB market… > > > > > On Tue, Feb 7, 2012 at 9:10 PM, Sean Martin <[email protected]> wrote: > Well this is one of those scenarios where I think the customer needs to take > responsibility. A good practice to get into is the creation of technical > requirement matrices and business requirement matrices. It helps you put on > paper what capabilities you need in a solution and gives the vendor a uniform > method of informing you of the strengths and weaknesses of their platform. We > typically tier our requirements into 3 categories that allows us to weigh the > importance of features. For example, a tier 1 requirement might be that the > solution support fiber channel or iscsi where a tier 2 or 3 requirement might > be support for sub-lun tiering or a 64bit OS to leverage larger cache. > > It may be too little too late but I'd be happy to share the template we used > for our last storage purchase. > > - Sean > > On Feb 7, 2012, at 4:29 PM, Kurt Buff <[email protected]> wrote: > > > If true, it would have been nice of them to disclose that before > > purchase, methinks... > > > > Kurt > > > > On Tue, Feb 7, 2012 at 17:04, Sean Martin <[email protected]> wrote: > >> I believe the next versions of VNX (5700, 7500, etc) support SCSI 3 > >> protocol which would not have that limitation. I believe this was a > >> limitation that was purposely introduced into the VNXe because EMC is > >> marketing it as an entry level "all-in-one" storage solution. They > >> need reasons for customers to scale up to the more expensive > >> platforms. I believe even the older CX, CX3 and CX4 models supported > >> SCSI 3. > >> > >> - Sean > >> > >> On 2/7/12, Mathew Shember <[email protected]> wrote: > >>> I have not used an EMC in a while but that does sound familiar. > >>> > >>> I did find one of their sheets that does say the size is limited to that. > >>> > >>> http://www.emc.com/collateral/hardware/specification-sheet/h8515-vnxe-ss.pdf > >>> > >>> Thanks, > >>> Mathew > >>> > >>> > >>> -----Original Message----- > >>> From: Kurt Buff [mailto:[email protected]] > >>> Sent: Tuesday, February 07, 2012 4:22 PM > >>> To: NT System Admin Issues > >>> Subject: EMC limitations? > >>> > >>> I've got a new-ish (January) EMC VNXe 3100, and have run into a troubling > >>> limitation - in use as an iSCSI device, it doesn't support LUNs larger > >>> than > >>> 1.99tb. According to a post by EMC staff on their community forum, it's > >>> doe > >>> to the implementation of the SCSI II protocol. > >>> > >>> I don't know if this limitations affects its use as a NAS, but that's > >>> disturbing. My Lefthand units support larger LUNs with no problem. > >>> And, otherwise, it's performed just fine - no problems at all. > >>> > >>> Does anyone out there now if other EMC products have this limitation? > >>> > >>> Kurt > >>> > >>> ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ > >>> <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ > >>> > >>> --- > >>> To manage subscriptions click here: > >>> http://lyris.sunbelt-software.com/read/my_forums/ > >>> or send an email to [email protected] > >>> with the body: unsubscribe ntsysadmin > >>> > >>> ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ > >>> ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ > >>> > >>> --- > >>> To manage subscriptions click here: > >>> http://lyris.sunbelt-software.com/read/my_forums/ > >>> or send an email to [email protected] > >>> with the body: unsubscribe ntsysadmin > >> > >> ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ > >> ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ > >> > >> --- > >> To manage subscriptions click here: > >> http://lyris.sunbelt-software.com/read/my_forums/ > >> or send an email to [email protected] > >> with the body: unsubscribe ntsysadmin > > > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ > > ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ > > > > --- > > To manage subscriptions click here: > > http://lyris.sunbelt-software.com/read/my_forums/ > > or send an email to [email protected] > > with the body: unsubscribe ntsysadmin > > > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ > ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ > > --- > To manage subscriptions click here: > http://lyris.sunbelt-software.com/read/my_forums/ > or send an email to [email protected] > with the body: unsubscribe ntsysadmin > > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ > ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ > > --- > To manage subscriptions click here: > http://lyris.sunbelt-software.com/read/my_forums/ > or send an email to [email protected] > with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected] with the body: unsubscribe ntsysadmin
