UCS RAID 5 strip size 128KB - why?

[DonweinerCO]

Why the recommendation to use a strip size of 128KB on RAID 5 arrays on rack servers? Per UCS documentation there doesn't appear to be a performance increase until 256KB. The recommendation is here:

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/virtual/CUCM_BK_CF3D71B4_00_cucm_virtual_servers/CUCM_BK_CF3D71B4_00_cucm_virtual_servers_chapter_01.html#CUCM_TK_CC6D0689_00

Thanks in advance.

[Manish Gogna · Accepted solution]

There were performance issues observed in servers that were mistakenly shipped with Strip size different that the default 128 KB

http://www.cisco.com/c/en/us/support/docs/field-notices/640/fn64029.html

Manish