Tom, As Mr. Goins has already pointed out, an official 'upgrade' from a 720 to an 820 will gut the 720 chassis of processor and memory and leave it in place as a 'migration tower' with all of its disk, cards, expansion towers (if any) etc. So you may need to be privy to 'the plan' in order to know whether this particular upgrade is appropriate. You say that your customer has two modems. The information you supplied indicates space for 21 modems as well as one internal modem. Cables are supplied for 16 V.24 and 4 bisynchronous lines. This doesn't jive. Each #4745 on the new machine will handle two lines. The #9771 will support one line as will as providing one internal V.90 modem for asynchronous PPP communications. If they truly need twenty synchronous and bisynchronous lines and if they want to move them to the new platform, then they are all set. If some of those lines are to be asynchronous, then they may be better served with a #4761 which would provide 8 internal modems in one PCI slot. If they are going with a migration tower, why are they putting all of the hardware on the new machine? Given the speed of a communications line, I'm not sure that I see a downside in leaving their existing communications cards in place. Unlike a high-speed tape drive or disk drives, I'm not sure that a communications line will stress the high-speed link between the 820 and the migration tower. On the new machine, your customer has the cards (#2749) to support two external tape drives. These would be appropriate for the 3570 and the 9348. The other two drives are 2.5 GB QIC (#6381) and 1.2 GB QIC (#9343). Neither of these are supported for migration to the 820 chassis. If they need to support these formats on their new machine, then they can either leave them in a migration tower or order feature #4582 (4 GB QIC) for the 820. The 4 GB QIC should be read/write compatible with tapes created on the other two drives. There are three cards on the 720 to support external media. All three of them could support the two external tapes (2 #2729 (PCI) and 1 #2621 (SPD)). I assume that one of these is not being used or is controlling something which is not listed. So, some additional questions: What's the plan? Are they going the migration tower route or do they want entirely new hardware? Do they have two or twenty communications lines? If they are utilizing a migration tower, why are they getting all new communications hardware? This is being very generous with PCI slots and could force an expansion chassis depending on other aspects of the configuration. If they are not utilizing a migration tower, then they need a new QIC tape drive. Are there quantities omitted on the listing of 720 features or is each a quantity of one? Please note that I have not verified that the cables currently attaching the 3570 and 9348 external tape drives are compatible with the #2729 cards. It needs to be looked at. These cables are features of the tape drives, not the 720/820, so they will not be listed on your configuration. It may depend on whether they are attached to the PCI or the SPD cards on the 720. Regards, Andy Nolen-Parkhouse > One of our customers has a 720 v4r5, and he's considering upgrading to an > 820 v5r1. The customer has 2 modems, and 4 tape drives. I was handed a > printout of some of the hardware and asked which are the modem-related > stuff, and which are tape-related. I don't know but know for sure that > someone on this list does. > > The 4 tape drives are: > TAP01 - 6381-001 > TAP02 - 9348-002 > TAP03 - 9343-002 > TAP04 - 3570-C01 > > I forget what the modem model- types are, but nothing fancy. > > Here's some of what they handed me on the printouts: > > Stuff on the current 720: > Product Description > 0348 V.24/EIA232 20-FT PCI CABLE > 0353 V.35 20-FT PCI CABLE > 2612 EIA 232/V.24 ONE-LINE ADPT > 2613 V.35 ONE-LINE ADAPTER > 2621 REMOVABLE MEDIA DEVICE ATTCH > 2623 SIX LINE COMM CONTROLLER > 2729 PCI MAGNETIC MEDIA CTLR > 2729 PCI MAGNETIC MEDIA CTLR > 2745 PCI TWO-LINE WAN IOA > 9020 V.35 CABLE 20 FT > 9023 V.24 CABLE 20 FT ENHANCED > > Stuff proposed for the 820: > Product Description Qty > 0348 V.24/EIA232 20-FT PCI CABLE 16 > 0353 V.35 20-FT PCI CABLE 4 > 2749 PCI ULTRA MAG MEDIA CTLR 2 > 2843 PCI IOP 3 > 4745 PCI WAN IOA 10 > 9691 BASE BUS ADAPTER 1 > 9771 BASE PCI 2-LINE WAN W/MODEM 1 > > > My question: what's needed on the 820 list to be sure that the customer is > able to use all of their tape drives and modems? What's missing from it? > > Tom Hightower
As an Amazon Associate we earn from qualifying purchases.
Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.