City Council Regular Meeting - Includes Action Taken
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Aaron Card, Information Technology Manager
Finance Director Review:
City Attorney Review:
Type of Action Requested:
Request to utilize a CDW-G state and local government contract vehicle, City of Mesa Arizona Contract 2018011-01 – Information Technology Solutions and Services, to purchase replacement storage area network (SAN) hardware, installation, and maintenance for the Casa Grande Public Safety Facility datacenter.
Staff recommends that the City Council approve the use of a CDW-G contract vehicle, City of Mesa Arizona Contract 2018011-01 – Information Technology Solutions and Services, to purchase replacement storage area network (SAN) hardware, installation, and maintenance in an amount not to exceed $126,579.24.
The City of Casa Grande relies extensively on storage area network (SAN) hardware at the Casa Grande Public Safety Facility datacenter. The replacement of this SAN was deferred a year and placed on an Extended Hardware Warranty. The original manufacturer has been sold twice since the initial implementation and an additional extension is not possible at this time. This SAN hardware refresh will enable the City of Casa Grande to maintain its present virtualized infrastructure at the Casa Grande Public Safety Facility and meet the associated service expectations that are enabled by the existence of a supportable storage array.
The recommended SAN is expected to provide approximately 128 terabytes (TB) of useable disk space that can scale to a reasonable extent. In addition to reaching End of Extended Hardware Warranty the present storage array was originally designed to complement a legacy SAN at Casa Grande City Hall – Building B. That SAN was replaced in 2019 and there is a need to return them to parity.
This solution is expected to last another 5-year rotation. This SAN is expected to accommodate reasonable year after year growth.
This expenditure will include a 60-month standard part replacement and service warranty for the storage area network (SAN).
Once the 60-month coverage window has expired the City of Casa Grande should anticipate the need to refresh this solution. A 5-year support cycle is very common in the enterprise storage space industry. Planning would begin in year four given the scope and complexity of this endeavor.
The associated Cisco fabric switches will fall under a different maintenance agreement, but staff anticipate that nominal ongoing annual cost will be accounted for by decommissioning the older Cisco fabric switches used by the present SAN.
The City of Casa Grande could elect not to refresh the production storage area network (SAN) hardware. However, it would not be prudent. The present SAN has been stable and reliable, but no vendor support will be available after reaching End of Extended Hardware Warranty. This is very specialized, proprietary technology that Casa Grande Information Technology (IT) will not be able to service or repair in the inevitable event of hardware failure.
Terabytes of data and virtualized infrastructure would become immediately unavailable and potentially lost. Operations that involve numerous on-premises systems and data repositories would be substantially and negatively impacted for a minimum of several weeks.
The City of Casa Grande continues to shift mission-critical systems to cloud-based storage platforms but a significant number of them remain on-premises. Some of them just cannot shift off premise as of today, such as the Tyler Technologies CAD / RMS solution.
Casa Grande IT is actively searching for systems that can be “cloud sourced” going forward. This has a two-fold benefit of slowing the need for more on-premises storage over time while also distributing critical applications to reduce the service impact of low-level infrastructure failure.
It seems likely that the City of Casa Grande will always need some type of locally hosted SAN. Casa Grande IT is doing what it can to minimize the cost of maintaining one by controlling the rate of data expansion. It would be especially cost prohibitive to revert to a physical server design architecture with on-premises storage distribution. However, Casa Grande IT does anticipate a reduction in overall hardware maintenance costs as the number of on-premises systems and data repositories continues to decline.
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