Well Rob, hardware prices today are a bit different than they were back in the day when the hardware supported the OS. That said, if you go to developer works you'll find lots of posts about RDX. See an interesting article by Tony Pearson of IBM talking about RDX technology. (Tony is a real honest genius and knows storage like no one else I know)

In the V7 information center see: "Removable Mass Storage" from the "What's new as of October 2012"

IBM i v7 infocenter,
About IBM i Information
IBM i information overview and what's new
Storage Solutions
Removable Mass Storage (RMS)

Ok back to normal voice....

Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects

On 12/5/2012 6:55 AM, rob@xxxxxxxxx wrote:
Yeah, $5000 is a lot of money for a tape drive. But my company bought the
$4000 8" diskette drive years ago to do a S/36 migration. That 25%
increase for something that blows the doors off of an 8" diskette drive,

Do you have a link to this RDX info?

Rob Berendt
-- IBM Certified System Administrator - IBM i 6.1 Group Dekko Dept 1600 Mail to: 2505 Dekko Drive Garrett, IN 46738 Ship to: Dock 108 6928N 400E Kendallville, IN 46755 http://www.dekko.com From: Jim Oberholtzer <midrangel@xxxxxxxxxxxxxxxxx> To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>, Date: 12/05/2012 07:39 AM Subject: Re: config for a low end 710 or 720 Sent by: midrange-l-bounces@xxxxxxxxxxxx I agree with Kirk, the 720. As many drives as you can stuff in there (remember disk arm performance) with RAID6 and your almost as safe as mirroring. I don't see any mention of LPAR but remember with a 720 4 way, you need to host the LPARs on IBM i or VIOS if you need them. (Now your using an HMC or LVM as well) I would have a real serious look at the internal RDX drive (the usb attach I have works but it's slower) for back up. Looks and reacts like a DVD on massive steroids. I've done all manner of testing with it and it does well. Two concerns; first the cartridges are more expensive than tape, but because they are really 2.5 inch hard drives they don't have some of the drawbacks of tape either. The second is speed. They are a bit slower than LTO but if that's not an issue..... Now the real kicker. LTO5 internal on a 710/720 = $5000. RDX internal = (about, I have not seen final pricing) $700. You can buy a lot of RDX carts for that kind of money. RDX carts run from 360Gb to 1TB. V7 with TR5 is required for the RDX units. They have a USB unit that plugs into any of the USB ports on the 720, sweet. As my customers all get to TR5 I'm using the RDX unit for PTF application etc. Avoids using the storage on the system and it's fast enough, particularly on systems with only a four drives, to make sense. Sorry if this sounded a bit like a commercial but the technology is really cool, finally available to IBM i, and no one seems to be talking about it. Jim Oberholtzer Chief Technical Architect Agile Technology Architects On 12/4/2012 9:07 PM, Kirk Goins wrote:
> Jim,
> Frankly from a performance point I do not like mirroring, maybe on the
> with the cache it may be fine. Day to day use OK, but PTFs, Upgrades etc
> really like a 4 drive Raid set.
> I don't think you can get less than 8Gb these days and as long as they
> don't want to run WebQuery, WebSphere etc then 8 will be fine.
> Tape if you can get then to spend the money then LTO is the way to go. I
> have only sold 1 system with a DAT drive and it worked but compared to
> it took forever to do much of anything. the720's can have the LTO5
> internally and LTO4 media has gotten cheaper than 1/4inch media.
> IBM will tell ya the 710 was designed for Linux/AIX and I am not sure
> can get a Deskside model
> On Tue, Dec 4, 2012 at 6:52 PM, franz400<franz400@xxxxxxx> wrote:
>> > Looking for recommendations (they already have the BP) for a low end
>> > system,
>> > Replacing a couple Advanced 36 systems, one local, other will be
>> > via vpn.
>> > Will run programs in s36 mode, but hopefully they will add newer
>> > (email, advanced printing (pdf), some edi, light web hosting)
>> > Each system currently has 3 - 5 users each.
>> >
>> > Considering the 8202 DAT tape drive - i see they now offer a usb
>> > 2- 146 Gig drives mirrored (maybe 4) - (is there a better option?
>> > occasional need for up to 80 gig useable)
>> > tower model (under a desk)
>> > i7.1
>> > legacy dev tools
>> > sql development tool
>> > system i access
>> > (having trouble finding weblink of software products avail to
>> >
>> >
>> > How much memory needed to drive system and up to 10 users and couple
>> > printers, with room to expand?
>> > How limiting is the entry 710 vs entry 720?
>> >
>> > Since it appears 1/4 inch cartridge tape not supported, am expecting
>> > ftp the libraries from an intermediary (520) system. Any other
>> >
>> > Even though BP will answer these, I appreciate the experience on
this list.
>> >
>> > Jim Franz
>> >
>> >
>> > --

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