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Strategies & Market Trends : Gorilla and King Portfolio Candidates

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To: Thomas Mercer-Hursh who wrote (31565)9/14/2000 8:15:04 AM
From: DownSouth  Read Replies (1) of 54805
 
Thomas, NTAP uses RAID 4, which is a dedicated parity drive in each array. This gives the flexibility of adding additional drives to an array "on the fly", with no need to backup and restore or even "down" the array.

NTAP can use RAID 4 because of they way WAFL manages free blocks and head movement. The disadvantages that other file systems have with RAID 4 are overcome by WAFL.

Also, NTAP's use of non-volatile RAM (NVRAM) is so reliable that cached writes are always completed, even in the case of a catastrophic failure. That is why ORACLE and other RDBMS vendors support NTAP's NFS mounts as RDBMS data volumes. NTAP's are the only NFS mounts supported by these vendors.
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