 Adaptec 2820SA JUNK Strengths: not many, well, none in fact.. though it will single handedly destroy your data given enough time.
Weaknesses: ADAPTEC. the claimed leaders or founders of scsi and raid standards. not true hardware raid, no true bus disconnection. rubish hard drive support.
Summary: it reviewed at the top of it's class. reputed for it's performance in raid 6 configurations. so it was the natural product to choose for an archive server. HOW WRONG WE WERE. Although the box advertised raid 6 support, it was not until a firmware update that features like raid 6 and raid level migration were activated. leading me to believe that this product left dry dock long before it was ready. a few firmware upgrades later, nothing has changed. it still drops up to 3 drives at a time, rendering any RAID level useless. sometimes, only by magic, and in defiance of RAID (physics) laws, we have restored the data. Most recently, our raid 6 config dropped 1 drive, and the subsequent rebuild corrupted data on several partitions, the MBR and the partition table. I now have no tools left in my recovery arsenal to recover the data. 1.2TB of data, there, but not there.. I can not express my level of dissapointment in Adaptec, especially their customer support section. This controller has set us back $5000 in drive costs and the cost of a new machine and storage system. NO, it is not worth any sum of money. Adaptec has chased the features it's competitors offer and lost the focus of true industry standard performance and above all reliability.
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