Sorry for the formatting of the first message. I forgot HMTL not supported and the excel table got out of whack. Hopefully this will work out better.
We're in the process of configuring two new IBM DS8886 for EAV volumes and I have a few questions for the storage experts Keeping in mind that each LCU on the DS8Ks only support 256 unit addresses. Our current methodology is to configure each LCU on the DS8Ks with 128 base devices and 32 alias devices leaving room for 96 more alias if required. By configuring only 128 base devices we're able to maximize our addressing from within HCD by using 00-7F for the first LCU and 80-FF in the next LCU. So as an example: HCD HCD Device PAV Logical PAV Drive Gb Addr Addr Volumes Count Emulation Capacity LCU 8000-7F 18000-1F 128 32 Mod-54 7128.240538 00 8080-FF 18080-9F 128 32 Mod-54 7128.240538 00 LCU 00 has unit addresses 00-7F configured as 8000-807F with MOD-54 base devices and the Alias devices are from C0 to FF and use 18000-1801F in HCD. My question is how many unit addresses are you using per LCU for EAV volumes? Has anyone set an EAV standard volume size and what are you using? We started with 262,668 CYLs per volume but now we're looking at 524,160 as that's equal to eight mod-54s. Anyone have any this large and if so any problems? Thanks, Ken Mazer "Hey, let's be careful out there." - Sergeant Phil Esterhaus (Hill Street Blues) ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
