EMC Storage Product Knowledge Sharing

Auto-provisioning requires Enginuity 5874 or later. It simplify Symmetrix provisioning by allowing you to create group of devices like storage group in CLARiiON, Front-End Port Group and Host Initiators Group and then associate these groups with each other in a masking view.The following are the basic steps for provisioning Symmetrix using Auto-Provisioning:-1) Create a Storage Group2) Create a Port Group3) Create an Initiator Group4) Associate the groups in a Masking View.Creating Storage Group:- It is component of Auto-Provisioning...

SRDF/S and SRDF/A configuration involves tasks such as suspending and resuming the replication, failover from R1 side to R2, restoring R1 or R2 volumes from their BCV, and more. You perform these and other SRDF/S or SRDF/A operations using both symrdf and TimeFinder command symmir. The below details are for SRDF Pair states during SRDF procedure.SyncInProg :- A synchronization is currently in progress between the R1 and the R2. There are existing invalid tracks between the two pairs and the logical link between both sides of...

Symmetrix Optimizer improves array performance by continuously monitoring access patterns and migrating devices to achieve balance across the disks in the array. This is process is carried out automatically based on user-defined parameters and is completely transparent to end users, hosts and applications in the environment. Migration is performed with constant data availability and consistent protection.Optimizer performs self-tuning of Symmetrix data configurations from the Symmetrix service processor by:· Analyzing...

A multipath requirement for different storage arrays:-All storage arrays: - Write cache must be disabled if not battery backed.Topology: - No single failure should cause both HBA and SP failover, especially with active-passive storage arrays.IBM TotalStorage DS 400 Family (formely FastT) –Defaul host type must be LNXCL or Host Type must be LNXCL orAVT (Auto Volume Transfer) is disabled in this host mode.HDS 99xx and 95xx family – HDS 9500V family (Thunder)- Requires two host modes:Host mode 1 – standardHost mode 2 – Sun...

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...

EMC introduced PowerPath Confgiuration Checker tools for customer. I thought to share about this. It will be very useful for those guys who are using PowerPath as a host fail-over software. It checks existing configuration with EMC support matrix and give you details reports about your configuration whether existing configuration is as EMC support guidelines. This tool is currently available for Windows Operating system.It tests the following check:· OS version verification· Machine Architecture as per ESM(EMC...

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...

We have discussed about Virtual Provisioning of Symmetrix in previous post. Now, we will discuss about Virtual Provisioning Configuration. You have to understand your storage environment before you run the below mentioned command.Configuring and viewing data devices and pools:Data Devices are devices with datadev attribute. Only Data Devices can be part of Thin Pool. Devices with different protection scheme can be supported for use in Thin Pools. It is depending on specific Enginuity level. All devices with the datadev attribute...

EMC announced Symmetrix V-Max recently which is based on virtual matrix. Symmetrix V-Max runs on latest Enginuity 5874. The 5874 plateform support Symmetricx V-Max Emulation level 121 and service processor level 102. The modular design of V-Max series Enginuity 5874 ensure flow and integrity between hardware component. Symmetrix Management Console 7.0 (SMC) integrated in service processor. SMC allows you to provision in 5 steps. Enginuity 5874 provides following enhanced feature:RAID Virtual Architecture :-Enginuity 5874 introduces...

To setup Replication Manager you must perform the following tasks:1) Verify that your environment has the minimum required storage hardware and that the hardware has a standard CLARiiON configuration.2) Confirm that your Replication Manager hosts (server and clients) are connected to the CLARiiON environment through a LAN connection.3) Zone the fibre switch appropriately (if applicable). The clients must be able to access all storage arrays they are using and the mount hosts must be able to access all storage in the EMC Replication...

The following rules and recommendations CX systems:1) You cannot use any of the disks 000 through 004 (enclosure 0, loop 0, disks 0-4) as a hot spare in a CX-Series system.2) The hardware reserves several gigabytes on each of disks 000 through 004 for the cache vault and internal tables. To conserve disk space, you should avoid binding any other disk into a RAID Group that includes any of these disks. Any disk you include in a RAID Group with a cache disk 000-004 is bound to match the lower unreserved capacity, resulting in...

The following major configuration steps for the storage, server and switches necessary for implementing the CLARiiON.Install Fibre Channel HBAs in all systemsInstall EMC CLARiiON LP8000 port driver ( For Emulex) on all systemConnect each host to both switches ( Broace/Cisco/McData)Connect SP1-A and SP2-A to the first switchConnect SP1-B and SP2-B to the second switchNote:- You can use cross SP connection for HA and connect SPA1 and SPB1 to first switch and SPB2 and SPA2 to the second switch.Install Operating System on windows/solaris/linux/Vmware...

EMC is introducing a revolutionary new Virtual Matrix architecture within the Symmetrix system family which will redefine high-end storage capabilities. This new Symmetrix V-Max system architecture allows for unprecedented levels of scalability. Robust high availability is enabled by clustering, with fully redundant V-Max Engines and interconnects. The Symmetrix V-Max series is built on a revolutionary Virtual Matrix architecture. Symmetrix...

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