EMC Storage Product Knowledge Sharing

Return code handling for Windows and UNIX The following lists the possible status or error codes that can be returned by the various SYMCLI commands on a Windows or UNIX platform and useful for troubleshooting.Code Code symbol Description___________________________________________________ 0 CLI_C_SUCCESS CLI -- call completed successfully. 1 CLI_C_FAIL CLI - call failed. 2 CLI_C_DB_FILE_IS_LOCKED- Another process has an exclusivelock...

Any disk drive from any manufacturer can exhibit sector read errors due to media defects. This is a known and accepted reality in the disk drive industry, particularly with the high recording densities employed by recent products. These media defects only affect the drive’s ability to read data from a specific sector; they do not indicate general unreliability of the disk drive. The disk drives that EMC purchases from its vendors are within specifications for soft media errors according to the vendors as well as EMC’s own Supply...

Organizations continually search for ways to both simplify storage management processes and improve storage capacity utilization. Several products have been released over the past few years that promise efficient use of storage space. One of the technologies that is quickly catching up is thin provisioning. 3PAR was one of the first vendors to introduce the concept while the rest quickly followed the suite.When provisioning storage for a new application, administrators must consider that application’s future capacity requirements...

There is available WWN decoder tool for EMC but I am going to discuss how to decode manually?Each Symmetrix SAF port, RAF port, EF ficon port or DAF port (DMX only) has a unique worldwide name (WWN). The WWN is associated with the Tachyon chip on the director. It was intended to remain unique per director so that the director can be accessed on a storage area network. The Symmetrix SAF/RAF/DAF/EF WWN is dependent on the Symmetrix serial number, the director number, the processor letter, and the port on the processor. When...

Mount EMC BCVs at the same hostExample:I have created a volumegroup, a logical volume, afilesystem and a file on two EMC standard volumes.(For this test you need to have two hdisks hdisk and hdisk andtwo BCVs dev and available)# mkvg -f -y MyName_vg -s 16 hdisk hdisk# mklv -y MyName_lv -b n MyName_vg 20# crfs -v jfs -d MyName_lv -m /MyName_mp -A yes -p rw# mount /MyName_mp# lptest > /MyName_mp/lptest.outFor using EMCs TimeFinder I have to create a device group.(AIX is working with volumegroups. EMCs TimeFinder is working...