IBM DATA MIGRATION SERVICES - Brochure - page 18
Multiserver UNIX array-to-array migration with consolidation
A Fortune 500 financial services firm had a mission-critical DB2 data ware-
house (24TB DB2, 10TB supporting files) on seven IBM AIX
®
5.1 server
platforms with the storage allocated to nine different storage arrays, some
more than five years old.
The firm faced these key migration challenges:
• Storagegrowth — Storagecapacitygrewfrom4TBto30TBinthreeyears,
withstorageaddedinademand-driven,ratherthanaplanned,fashion.
• Locatingstorage — Storageadministratorswereunabletopreciselylocate
storage.
• Complexenvironment — Thesystemcouldbeupgradedorchangedonlywith
difficulty,resultinginnumerousendusercomplaintsaboutsystemperformance.
• Relocatingdata—Anewstoragearraywaspurchasedtoimproveperformance
bymigratingandreconfiguringvolumes.
• Source/targetincompatibilities—Thefirmwasunabletoperformmigration
duetothecomplexityoftheenvironment;thiscreatedincompatibilities
betweenthesourceandtargetstoragearrays,sothenewarraysatunused
fortwomonthsonthedatacenterfloor.
The firm evaluated several different migration options:
• Offlinebackupandrestorefromtape — Thisoptionwasrejecteddueto
timeconstraints.
• Operatingsystem(OS)synchronizationtools — Thisoptionwasrejected
duetotheinabilitytocontrolmigrationstart/endtimes.
• Array-basedreplication — Thiswasnotanoptionbecauseoftheincompat-
ibilitiesbetweensourceandtargetstorage.
• AIXserver-nativeLogicalVolumeManagermirroring — Thiswasrejectedas
VolumeManagerwastooslowandwasnotconfiguredformirroring.
Storage migrations made simple.
Page 18
Highlights
A financial services firm struggled
with excessive storage growth and
other related challenges.