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Sunday, August 4, 2013

force the individual SFF-8088 cable write caches

The SAS Cable, External SFF-8088 cable from Technology is an internal Mini-SAS to Mini-SAS cable. It is for use with all internal ATTO SAS/SATA Host and RAID adapters and is RoHS compliant This is the most common external multilane connector type. However, unlike SFF-8087, where the top cards often have four or six connectors, SFF-8088 cable usually comes with only one or two connectors per controller. This is because a single SFF-8088 cable connector on a SAS Expander-enabled controller can connect to a large SAS Expander-enabled enclosure, which can then be daisy-chained.The only problem I had with these servers is with the v1.46 firmware that shipped on the Areca's. There was high latency the first time a file is read or written, about 2 or 3 seconds. But when I upgraded the firmware to v1.47, this problem went away. Now all servers are happily serving more than 20 TB of data each, with only 1 SFF-8088 cable failure out of 64 SFF-8088 cable (infant mortality?).Can you describe in more detail your Areca 1680ix setup and what exactly you observed with the WD2002FYPS drives

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