Clark Morris wrote:
On 16 Jan 2008 08:57:35 -0800, in bit.listserv.ibm-main you wrote:
EMC announced DMX4 disk system ...without disks. Flash memory would be
used as a disk module.
Questions/observations:
1. End of magnetic platters ?
2. Another level of virtualization (or translation). Flash device
emulates disk module. Disk modules are used for CKD emulation.
3. Maybe there is no reason to force MVS to support FBA devices (as it
would become fading technology), it is more far sighted to implement
"technology of the future" - natively operated flash memory.
Au contraire. My USB key is FBA formatted in 512 byte sectors (I
think it is one of the FAT formats available to Win 98 or earlier).
FBA is oriented to both disk and even more so, solid state.
I dare to disagree. Your USB *emulates* FBA device. Your PC sees
cylinders, heads and sectors, while flash memory is accessed in
different way.
There are
a number of limitations in CKD that will be painful to eliminate and
even if they are we are still left with a KLUDGE for which the phase
out should have started 25 years ago.
CKD is not "format of the future". However FBA has shortcomings as well.
Maybe it would be wiser not to switch from CKD to FBA, and swtich to
"new format" directly.
--
Radoslaw Skorupka
Lodz, Poland
--
BRE Bank SA
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Wedug stanu na dzie 01.01.2007 r. kapita zakadowy BRE Banku SA (w caoci
opacony) wynosi 118.064.140 z. W zwizku z realizacj warunkowego
podwyszenia kapitau zakadowego, na podstawie uchwa XVI WZ z dnia 21.05.2003
r., kapita zakadowy BRE Banku SA moe ulec podwyszeniu do kwoty 118.760.528
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