He may have been referring to SAS drives which may have only been available in 300GB sizes at the time. With RAID overhead and a spare, it wouldn't have provided 4TB.
- Sean On Mon, Aug 30, 2010 at 2:35 PM, Steven M. Caesare <[email protected]>wrote: > > The capacity we need (around 15tb usable) isn’t a nice number for > either EQL or Lefthand as it means multiple nodes. > > > > > > What? (assuming in your post EQL – EqualLogic) > > > > The older EqualLogic’s we bought had 48 x 1TB spindles (~40TB usable). The > new ones have 2TB spindles (~80TB usable). > > > > That’s a single node/controller. > > > > -sc > > > > *From:* Paul Hutchings [mailto:[email protected]] > *Sent:* Monday, August 30, 2010 5:15 PM > > *To:* NT System Admin Issues > *Subject:* RE: SAN Storage > > > > One of the things that concerns me about Lefthand and EQL is that they are > “node” based – good for performance scale out but it means that at certain > points you’re committed to paying for a new tray complete with spindles and > controllers whilst with other vendors you pay up front for the controllers > but (hopefully) have slightly lower costs when you want to add disks as > (trays aside) all you’re doing is adding disks. > > > > The capacity we need (around 15tb usable) isn’t a nice number for either > EQL or Lefthand as it means multiple nodes. > > > > I should add to my original post that whilst budgets may mean we can’t do > it from day one, we do have a DR location with fast fibre to our main > location as we’d like to have full replication of data to this location – we > don’t need instant failover or anything, but the intention is that it would > have to be a very bad day before we’d have to hit the tapes. > > > > *From:* Steve Ens [mailto:[email protected]] > *Sent:* 30 August 2010 20:54 > > *To:* NT System Admin Issues > *Subject:* Re: SAN Storage > > > > I just implemented the LeftHand starter SAN 7.2TB...two nodes with network > RAID. The performance is amazing. 500MB transfer from SAN to local disk in > two or three seconds. > > On Mon, Aug 30, 2010 at 2:49 PM, Kurt Buff <[email protected]> wrote: > > I'm looking to add in a LH unit to the two that we already have. > > The newer software (8.0) supports a kind of network RAID. My LHs are > pretty small (4tb raw) and replicate to each other, so I only have the > 4tb minus the formatting (roughly 3.7tb). The ability to add in a unit > of the same size, keep using two-way replication across three units > and basically double my storage, is pretty appealing, along with the > probable gain in throughput from the extra unit on the wire. > > Plus, relatively speaking the original units were pretty cheap. I'm > getting pricing from CDW and a couple of local firms in the next few > days, so I don't have a good guess on current pricing, but I'll bet > it's still cheaper than the bigger players, in spite of the fact that > HP bought LH a year or two ago. > > Kurt > > > On Mon, Aug 30, 2010 at 08:30, Paul Hutchings <[email protected]> > wrote: > > Looking for a little feedback folks. > > > > > > > > We’ve got a SAN replacement coming up in a few months. We’re pretty much > a > > vmware shop except where a service has to run on a physical server (IO > cards > > etc.). > > > > > > > > The vendors I’m primarily looking at are Lefthand, Equallogic and Netapp, > > and possibly EMC since Dell can quote on an EMC solution as well as > > Equallogic. > > > > > > > > I’ve not had quotes yet, but so far my instincts are leaning towards > Netapp, > > mainly because of the things I keep hearing about NFS for vmware, as well > as > > the fact they seem to offer a lot of flexibility whereas Lefthand and > > Equallogic offer iSCSI and, well yeah, they offer iSCSI. > > > > > > > > Be interested to hear any experiences, especially around vmware and > > replication between SANs at live/backup sites (not a live failover site > but > > a “this will take a little work but we have a copy of the data that’s an > > hour old” site). > > > > ________________________________ > > MIRA Ltd > > Watling Street, Nuneaton, Warwickshire, CV10 0TU, England > > Registered in England and Wales No. 402570 > > VAT Registration GB 114 5409 96 > > The contents of this e-mail are confidential and are solely for the use > of > > the intended recipient. 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